{"query":{"parameter":"chloride","place":"US-OK","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-OK","US"],"parameter_keys":["cas:16887-00-6","cas:7647-14-5"],"names_matched":[["chloride","cas:16887-00-6"],["chloride","cas:7647-14-5"]],"match":"exact","order":"The place's own instruments first, then each place above it, each in its register's order","not_searched":{"names":105,"parameters":64,"some":["1 1 3 5 tetramethyl piperidinium chloride","1 1 dichlorethane ethylidene chloride","1 1 dichloroethylene 1 1 dichloroethene vinylidene chloride","1 1 dichloroethylene vinylidene chloride","1 decanaminium n decyl n n dimethyl chloride","1 propanaminium 2 3 dihydroxy n n n trimethyl chloride","2 3 dihydroxy n n n trimethyl 1 propanaminium chloride","2 acryloyloxy ethyl trimethylammonium chloride","2 chlorobenzyl chloride","2 ethyl hexanoyl chloride","2 ethylhexyl chloride","2 propen 1 aminium n564n n dimethyl n propenyl chloride homopolymer","3 chloro 2 hydroxypropyltrimethyl ammonium chloride","3 chloro 2 hydroxypropyltrimethylammonium chloride","4 4 4 trifluoroacetoacetyl chloride","4 chlorobenzyl chloride","5 methylene chloride","acetyl chloride","alkyl dimethyl benzyl ammonium chloride","allyl chloride","aluminum chloride hydroxide","ammonium chloride","benzal chloride","benzoyl chloride","benzoyl chloride 2 methyl"],"says":"105 other names contain \"chloride\" (64 parameters, over the 40 searched at once): ask for one of them by name."}},"total":115,"offset":0,"returned":50,"next_offset":50,"rows":[{"id":"76813536fa9fe6dc","parameter":"Chloride","value":"398","value_num":398,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 120400 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":124,"quote":null}},{"id":"f2fde54efbff10a6","parameter":"Chloride","value":"548","value_num":548,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 120400 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":124,"quote":null}},{"id":"8501cb79abdeb60b","parameter":"Chloride","value":"629","value_num":629,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 120410 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":124,"quote":null}},{"id":"47067efdf48a6497","parameter":"Chloride","value":"810","value_num":810,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 120410 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":124,"quote":null}},{"id":"dbff6b11495cefe9","parameter":"Chloride","value":"719","value_num":719,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 120420 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":124,"quote":null}},{"id":"cb9cb5c1c98c25a9","parameter":"Chloride","value":"925","value_num":925,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 120420 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":124,"quote":null}},{"id":"bc43330696ec9ffd","parameter":"Chloride","value":"250 (Appendix F prints 89; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 121300 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":124,"quote":null}},{"id":"b241d3d3858600b0","parameter":"Chloride","value":"250 (Appendix F prints 117; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 121300 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":124,"quote":null}},{"id":"42e998678c796afb","parameter":"Chloride","value":"250 (Appendix F prints 98; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 121400 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":125,"quote":null}},{"id":"9aa395c29112607b","parameter":"Chloride","value":"250 (Appendix F prints 135; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 121400 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":125,"quote":null}},{"id":"7813d9a348842c35","parameter":"Chloride","value":"250 (Appendix F prints 60; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 121500 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":125,"quote":null}},{"id":"14946d79125a7cf9","parameter":"Chloride","value":"250 (Appendix F prints 80; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 121500 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":125,"quote":null}},{"id":"7a3e2a0c4b4ebb3f","parameter":"Chloride","value":"250 (Appendix F prints 65; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 121510 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":125,"quote":null}},{"id":"75e7ecb6fe9d276a","parameter":"Chloride","value":"250 (Appendix F prints 88; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 121510 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":125,"quote":null}},{"id":"f4ff77eb525067ff","parameter":"Chloride","value":"250 (Appendix F prints 21; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 121600 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":125,"quote":null}},{"id":"90627c6d832baf81","parameter":"Chloride","value":"250 (Appendix F prints 30; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 121600 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":125,"quote":null}},{"id":"8e43874636c72051","parameter":"Chloride","value":"250 (Appendix F prints 100; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 121610 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":125,"quote":null}},{"id":"bfaf4cc73ff040a3","parameter":"Chloride","value":"250 (Appendix F prints 148; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 121610 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":125,"quote":null}},{"id":"807c8cd393098253","parameter":"Chloride","value":"250 (Appendix F prints 21; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 121700 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":125,"quote":null}},{"id":"99779bc9b247c2c4","parameter":"Chloride","value":"250 (Appendix F prints 30; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 121700 (Basin 1, Middle Arkansas River) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":125,"quote":null}},{"id":"77245b8be1a3eb7f","parameter":"Chloride","value":"250 (Appendix F prints 27; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 220100 (Basin 2, Lower Arkansas River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":125,"quote":null}},{"id":"1206d8fa70f0d306","parameter":"Chloride","value":"250 (Appendix F prints 43; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 220100 (Basin 2, Lower Arkansas River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":125,"quote":null}},{"id":"328a5a8f60c5e688","parameter":"Chloride","value":"250 (Appendix F prints 225; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 220200 (Basin 2, Lower Arkansas River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":126,"quote":null}},{"id":"d8cc85e7ea03213f","parameter":"Chloride","value":"295","value_num":295,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 220200 (Basin 2, Lower Arkansas River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":126,"quote":null}},{"id":"54ef136d1b67d961","parameter":"Chloride","value":"250 (Appendix F prints 83; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 220300 (Basin 2, Lower Arkansas River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":126,"quote":null}},{"id":"2af03b12060fef47","parameter":"Chloride","value":"250 (Appendix F prints 96; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 220300 (Basin 2, Lower Arkansas River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":126,"quote":null}},{"id":"81a030b03c6c04f3","parameter":"Chloride","value":"250 (Appendix F prints 230; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 220600 (Basin 2, Lower Arkansas River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":126,"quote":null}},{"id":"c343a7fe8202aee5","parameter":"Chloride","value":"312","value_num":312,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 220600 (Basin 2, Lower Arkansas River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":126,"quote":null}},{"id":"de1407a4af4056b0","parameter":"Chloride","value":"250 (Appendix F prints 134; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 310800 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":126,"quote":null}},{"id":"6ad7da542216959d","parameter":"Chloride","value":"250 (Appendix F prints 184; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 310800 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":126,"quote":null}},{"id":"63827b7a7c057888","parameter":"Chloride","value":"250 (Appendix F prints 127; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 310810 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":126,"quote":null}},{"id":"71ce601ee02430fa","parameter":"Chloride","value":"250 (Appendix F prints 170; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 310810 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":126,"quote":null}},{"id":"11499bc35c7b35ed","parameter":"Chloride","value":"250 (Appendix F prints 159; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 310830 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":126,"quote":null}},{"id":"c8a08c9c9e74f3e9","parameter":"Chloride","value":"250 (Appendix F prints 231; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 310830 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":126,"quote":null}},{"id":"2de47cfc2a41b2f5","parameter":"Chloride","value":"250 (Appendix F prints 115; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 310840 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":126,"quote":null}},{"id":"e2b34734159565e6","parameter":"Chloride","value":"250 (Appendix F prints 173; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 310840 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":126,"quote":null}},{"id":"2a143f9ff0edf825","parameter":"Chloride","value":"1007","value_num":1007,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 311100 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":127,"quote":null}},{"id":"3a43e4c6406807de","parameter":"Chloride","value":"1384","value_num":1384,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 311100 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":127,"quote":null}},{"id":"5ce40fb40aa58dbe","parameter":"Chloride","value":"883","value_num":883,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 311200 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":127,"quote":null}},{"id":"7ca4ddccb9249c8c","parameter":"Chloride","value":"1197","value_num":1197,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 311200 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":127,"quote":null}},{"id":"d0181e39c22544a5","parameter":"Chloride","value":"250 (Appendix F prints 69; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 311210 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":127,"quote":null}},{"id":"5bdb45daf83f3272","parameter":"Chloride","value":"250 (Appendix F prints 93; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 311210 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":127,"quote":null}},{"id":"d4ff0f5d698b735a","parameter":"Chloride","value":"250 (Appendix F prints 73; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 311300 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":127,"quote":null}},{"id":"56bd055d20cba647","parameter":"Chloride","value":"250 (Appendix F prints 97; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 311300 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":127,"quote":null}},{"id":"9b73405956ae0d4c","parameter":"Chloride","value":"250 (Appendix F prints 231; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 311300, trib to Nine Mile Ck (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":127,"quote":null}},{"id":"f74b995311188a63","parameter":"Chloride","value":"262","value_num":262,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 311300, trib to Nine Mile Ck (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":127,"quote":null}},{"id":"db8db4f1062af07e","parameter":"Chloride","value":"250 (Appendix F prints 232; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 311300, Nine Mile Ck (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":127,"quote":null}},{"id":"0b913684fd65d25e","parameter":"Chloride","value":"279","value_num":279,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 311300, Nine Mile Ck (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":127,"quote":null}},{"id":"a7b1672ae3efde4e","parameter":"Chloride","value":"250 (Appendix F prints 243; OAC 252:730-5-13(g): not required below 250)","value_num":250,"unit":"mg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 311500 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":127,"quote":null}},{"id":"ed7c4ba3a98a626a","parameter":"Chloride","value":"353","value_num":353,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-OK"],"conditions":["receiving_water is freshwater","WQM segment 311500 (Basin 3, Upper Red River Basin) (a water's segment: the first six digits of its Waterbody ID number in Appendix A; not evaluated)","waters designated Agriculture in Appendix A (the Irrigation Agriculture subcategory applies by default: EPA cover, February 10, 2025) (a water's designated uses: Appendix A; not evaluated)"],"cite":{"instrument":"us_ok_wqs","title":"Oklahoma's Water Quality Standards (OAC 252:730): Appendix G Tables 1-2 numerical criteria by beneficial use, and the numerical criteria of 252:730-5-10, 5-12 and 5-19, and Appendix F chloride, sulfate and TDS by WQM segment (252:730-5-13)","issuer":"State of Oklahoma, Department of Environmental Quality (Environmental Quality Board)","edition":"OAC 252:730 as DEQ codifies it (Board adoption February 17, 2023, effective September 15, 2023; DEQ's own PDF, born-digital). US EPA's posting in effect for CWA purposes (effective December 18, 2024, cover February 10, 2025) is an OCR'd scan of the later edition; its Appendix G carries no amendment after September 15, 2023. EPA's exceptions are honoured: the perchlorate 'fish consumption and water' 9 µg/L (no action) and the Livestock Agriculture subcategory (disapproved) are not held; Appendix E site-specific criteria for Poteau and Idabel are not held. Appendix F (amended effective 9-15-24 in EPA's posting) prints the same values as DEQ's 2023 PDF; its eight-digit sub-watershed segments (note (4)) carry EPA's no action and are not held","source_url":"https://oklahoma.gov/content/dam/ok/en/deq/documents/deqmainresources/730.pdf","source_sha256":"483572da2c80c9686956047426b41f44e56388c1ab5873c5ce38b6d905b70b40","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"OAC 252:730 Appendix F","page":127,"quote":null}}],"next":[{"tool":"check_values","says":"Has your user measured this? check_values sets each of their results beside every row held here, with a verdict and the row's cite.","arguments":{"place":"US-OK"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"chloride\", value, unit}, ...], any other parameters too."},"post":"/api/v1/check"},{"tool":"read_certificate","says":"Has your user a laboratory certificate? read_certificate reads every row it prints, each with its page, and checks them against these limits.","arguments":{"place":"US-OK"},"needs":{"content_base64":"The laboratory's certificate (PDF) or its XLSX, XLS or CSV export, as base64; or file_url, a public https address of it."},"post":"/api/v1/certificate"}]}