{"query":{"parameter":"p p ddt","place":"US-OK","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-OK","US"],"parameter_keys":["cas:50-29-3","cas:72-54-8","cas:72-55-9","name:ddt total","name:4,4'-ddt","name:ddt et metabolites","name:ddt","name:ddt & metabolites"],"names_matched":[["p p ddt","cas:50-29-3"],["p p dichlorodiphenyldichloroethane or ddt metabolite tde ddd","cas:72-54-8"],["p p dichlorodiphenyldichloroethylene or ddt metabolite dde","cas:72-55-9"],["ddt total","name:ddt total","ddt total"],["ddt total 1","name:ddt total","ddt total"],["4 4 ddt and metabolites","name:4,4'-ddt","ddt metabolites"],["ddt et metabolites","name:ddt et metabolites","ddt metabolites"],["ddt metabolites","name:ddt","ddt metabolites"],["ddt metabolites","name:ddt & metabolites","ddt metabolites"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order; rows for a marine receiving water after the rest, as none of the place's own rows names a marine, salt, estuarine, coastal or ocean water","not_sent":{"rows":20,"names":["Dichlorodiphenyldichloroethane, p,p'- (DDD)","Dichlorodiphenyldichloroethylene, p,p'- (DDE)","p,p′-Dichlorodiphenyldichloroethane (DDD)","p,p′-Dichlorodiphenyldichloroethylene (DDE)","p,p′-DDD","4,4’-DDD","p,p′-DDE"],"says":"20 rows share a parameter key with a longer name holding \"p p ddt\" but are printed under names without these words (that key is wider than the name), or keyed to a CAS number \"p p ddt\" does not name (another substance, whatever words its name holds): not sent. Ask for one by its name or CAS number."}},"total":17,"offset":0,"returned":17,"next_offset":null,"rows":[{"id":"3623fe536dd3fc46","parameter":"4,4’-DDT","value":"1.1","value_num":1.1,"unit":"µg/L","statistic":"instant","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:50-29-3","place":["US-OK"],"conditions":["receiving_water is freshwater","waters designated with any Fish and Wildlife Propagation subcategory (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 G Table 2","page":136,"quote":"4,4’-DDT 50293 1.1 0.001 0.0022 0.0022 (Footnote 1) (Footnote 1)"}},{"id":"534734d1b71e5f56","parameter":"4,4’-DDT","value":"0.001","value_num":0.001,"unit":"µg/L","statistic":"daily_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:50-29-3","place":["US-OK"],"conditions":["receiving_water is freshwater","waters designated with any Fish and Wildlife Propagation subcategory (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 G Table 2","page":136,"quote":"4,4’-DDT 50293 1.1 0.001 0.0022 0.0022 (Footnote 1) (Footnote 1)"}},{"id":"a51a75dbf16ccd4d","parameter":"4,4’-DDT","value":"0.0022","value_num":0.0022,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:50-29-3","place":["US-OK"],"conditions":["receiving_water is freshwater","waters designated Public and Private Water Supply (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 G Table 2","page":136,"quote":"4,4’-DDT 50293 1.1 0.001 0.0022 0.0022 (Footnote 1) (Footnote 1)"}},{"id":"18639c407dfcdc66","parameter":"4,4’-DDT","value":"0.0022","value_num":0.0022,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:50-29-3","place":["US-OK"],"conditions":["receiving_water is freshwater","waters designated Warm Water Aquatic Community, Cool Water Aquatic Community or Trout Fishery (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 G Table 2","page":136,"quote":"4,4’-DDT 50293 1.1 0.001 0.0022 0.0022 (Footnote 1) (Footnote 1)"}},{"id":"513f39755c1c904c","parameter":"p,p′-DDT","value":"0.0039","value_num":0.0039,"unit":"mg/L","statistic":"composite","direction":"max","kind":"limit","medium":"product","level":"national","parameter_key":"cas:50-29-3","place":["US"],"conditions":["(a) Table UTS identifies the hazardous constituents, along with the nonwastewater and wastewater treatment standard levels, that are used to regulate most prohibited hazardous wastes with numerical limits. For determining compliance with treatment standards for underlying hazardous constituents as defined in § 268.2(i), these treatment standards may not be exceeded. Compliance with these treatment standards is measured by an analysis of grab samples, unless otherwise noted in the following Table UTS."],"cite":{"instrument":"us_40cfr268_48","title":"40 CFR 268.48 — Universal treatment standards: Table UTS, wastewater and nonwastewater treatment standards for the hazardous constituents of land-disposal-restricted wastes","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"eCFR, 40 CFR 268.48 as of 2026-10-13 (title 40 up to date as of that day; source note: 59 FR 48103, Sept. 19, 1994, as last amended at 76 FR 34156, June 13, 2011)","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-13/title-40.xml?part=268&section=268.48","source_sha256":"70b2e58a6b1e228e2c204acc69b69fab0d5a0347e35d569959073c3dc3ee4adb","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 268.48, Table UTS, Organic Constituents, wastewater standard","page":null,"quote":"p,p′-DDT 50-29-3 0.0039 0.087"}},{"id":"f418c30e6f897985","parameter":"p,p′-DDT","value":"0.087","value_num":0.087,"unit":"mg/kg","statistic":"instant","direction":"max","kind":"limit","medium":"product","level":"national","parameter_key":"cas:50-29-3","place":["US"],"conditions":["(a) Table UTS identifies the hazardous constituents, along with the nonwastewater and wastewater treatment standard levels, that are used to regulate most prohibited hazardous wastes with numerical limits. For determining compliance with treatment standards for underlying hazardous constituents as defined in § 268.2(i), these treatment standards may not be exceeded. Compliance with these treatment standards is measured by an analysis of grab samples, unless otherwise noted in the following Table UTS."],"cite":{"instrument":"us_40cfr268_48","title":"40 CFR 268.48 — Universal treatment standards: Table UTS, wastewater and nonwastewater treatment standards for the hazardous constituents of land-disposal-restricted wastes","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"eCFR, 40 CFR 268.48 as of 2026-10-13 (title 40 up to date as of that day; source note: 59 FR 48103, Sept. 19, 1994, as last amended at 76 FR 34156, June 13, 2011)","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-13/title-40.xml?part=268&section=268.48","source_sha256":"70b2e58a6b1e228e2c204acc69b69fab0d5a0347e35d569959073c3dc3ee4adb","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 268.48, Table UTS, Organic Constituents, nonwastewater standard","page":null,"quote":"p,p′-DDT 50-29-3 0.0039 0.087"}},{"id":"111dda46578b21a4","parameter":"4,4'-DDT","value":"1.1","value_num":1.1,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:50-29-3","place":["US"],"conditions":["EPA's recommendation under Clean Water Act § 304(a): 'State and Tribal governments may use these criteria or use them as guidance in developing their own' — it binds a water once the state adopts it for the water's designated use","receiving_water is freshwater","Freshwater CMC (acute): criterion maximum concentration, acute"],"cite":{"instrument":"us_nrwqc_aquatic","title":"EPA National Recommended Water Quality Criteria — Aquatic Life Criteria Table (freshwater and saltwater CMC/CCC)","issuer":"U.S. Environmental Protection Agency","edition":"EPA web table, last updated on June 9, 2026 (fetched 2026-10-09); each criterion carries its publication year","source_url":"https://www.epa.gov/wqc/national-recommended-water-quality-criteria-aquatic-life-criteria-table","source_sha256":"be6b429558db9852c3456eb22c17046aa1a3335ee89e702e8afb793f9b5b25ec","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"National Recommended Aquatic Life Criteria table","page":null,"quote":"4,4'-DDT (P) 50293 1.1 0.001 0.13 0.001 1980"}},{"id":"5a15f2a5375e0297","parameter":"4,4'-DDT","value":"0.001","value_num":0.001,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:50-29-3","place":["US"],"conditions":["EPA's recommendation under Clean Water Act § 304(a): 'State and Tribal governments may use these criteria or use them as guidance in developing their own' — it binds a water once the state adopts it for the water's designated use","receiving_water is freshwater","Freshwater CCC (chronic): criterion continuous concentration, chronic"],"cite":{"instrument":"us_nrwqc_aquatic","title":"EPA National Recommended Water Quality Criteria — Aquatic Life Criteria Table (freshwater and saltwater CMC/CCC)","issuer":"U.S. Environmental Protection Agency","edition":"EPA web table, last updated on June 9, 2026 (fetched 2026-10-09); each criterion carries its publication year","source_url":"https://www.epa.gov/wqc/national-recommended-water-quality-criteria-aquatic-life-criteria-table","source_sha256":"be6b429558db9852c3456eb22c17046aa1a3335ee89e702e8afb793f9b5b25ec","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"National Recommended Aquatic Life Criteria table","page":null,"quote":"4,4'-DDT (P) 50293 1.1 0.001 0.13 0.001 1980"}},{"id":"fcfa5889252445b8","parameter":"p,p′-Dichlorodiphenyltrichloroethane (DDT)","value":"0.000030","value_num":0.00003,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:50-29-3","place":["US"],"conditions":["EPA's recommendation under Clean Water Act § 304(a): 'State and Tribal governments may use these criteria or use them as guidance in developing their own' — it binds a water once the state adopts it for the water's designated use","receiving_water is freshwater","consumption of water + organism: a water designated a drinking-water source and for fish and shellfish (a designated use the state assigns)"],"cite":{"instrument":"us_nrwqc_human_health","title":"EPA National Recommended Water Quality Criteria — Human Health Criteria Table (water + organism, organism only)","issuer":"U.S. Environmental Protection Agency","edition":"EPA web table (fetched 2026-10-09); 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SSL values are based on DAF=1"],"cite":{"instrument":"us_rsl_soil","title":"US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Soil","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"November 2024","source_url":"https://semspub.epa.gov/src/document/HQ/405270","source_sha256":"0160dc81b4f55d738a354a74de92488f149946ebfa7c6a6c64592f45348043d7","fetched_at":"2026-09-19","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"ssl","column":"risque"}},{"id":"9a7dfb9530acbaa3","parameter":"Dichlorodiphenyltrichloroethane, p,p'- (DDT)","value":"0.23","value_num":0.23,"unit":"µg/L","direction":"max","kind":"guideline","medium":"drinking_water","level":"national","parameter_key":"cas:50-29-3","place":["US"],"conditions":["Tap Water (ug/L): Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024"],"cite":{"instrument":"us_rsl_tapwater","title":"US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Tap Water","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"November 2024","source_url":"https://semspub.epa.gov/src/document/HQ/405270","source_sha256":"0160dc81b4f55d738a354a74de92488f149946ebfa7c6a6c64592f45348043d7","fetched_at":"2026-09-19","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"eau","column":"eau_robinet"}},{"id":"19135ff060fe0480","parameter":"4,4'-DDT","value":"0.13","value_num":0.13,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:50-29-3","place":["US"],"conditions":["EPA's recommendation under Clean Water Act § 304(a): 'State and Tribal governments may use these criteria or use them as guidance in developing their own' — it binds a water once the state adopts it for the water's designated use","receiving_water is marine","Saltwater CMC (acute): criterion maximum concentration, acute"],"cite":{"instrument":"us_nrwqc_aquatic","title":"EPA National Recommended Water Quality Criteria — Aquatic Life Criteria Table (freshwater and saltwater CMC/CCC)","issuer":"U.S. Environmental Protection Agency","edition":"EPA web table, last updated on June 9, 2026 (fetched 2026-10-09); 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