{"query":{"parameter":"mercury","place":"US-OK","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-OK","US"],"parameter_keys":["cas:7439-97-6","name:arsenic, cadmium (h), copper (h), lead (h), mercury, zinc","name:cadmium (h), copper (h), mercury, lead (h), zinc","cas:7487-94-7","name:mercury (+2)","cas:62-38-4","name:mercury ii","name:mercury, including methylmercury","name:mercury, total","name:mercury, total in water","name:mercury - total - methyl-","name:mercury, total recoverable","name:mercury - total - total","cas:22967-92-6","name:total mercury","name:mercure total"],"names_matched":[["mercury","cas:7439-97-6"],["arsenic cadmium h copper h lead h mercury zinc h","name:arsenic, cadmium (h), copper (h), lead (h), mercury, zinc"],["cadmium h copper h mercury lead h zinc h","name:cadmium (h), copper (h), mercury, lead (h), zinc"],["mercuric chloride and other mercury salts","cas:7487-94-7"],["mercury 2 total recoverable","name:mercury (+2)"],["mercury acetato o phenyl","cas:62-38-4"],["mercury ii","name:mercury ii"],["mercury ii dissolved","name:mercury ii"],["mercury including methylmercury","name:mercury, including methylmercury"],["mercury total","name:mercury, total"],["mercury total in water","name:mercury, total in water"],["mercury total methyl","name:mercury - total - methyl-"],["mercury total recoverable","name:mercury, total recoverable"],["mercury total total","name:mercury - total - total"],["methyl mercury","cas:22967-92-6"],["total mercury freshwater","name:total mercury"],["total mercury marine","name:total mercury"],["mercure total hg","name:mercure total","mercure"]],"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":4,"names":["~Phenylmercuric Acetate"],"says":"4 rows share a parameter key with a longer name holding \"mercury\" but are printed under names without these words (that key is wider than the name): not sent. Ask for one by its name or CAS number."}},"total":362,"offset":0,"returned":50,"next_offset":50,"rows":[{"id":"c173f2553e623c94","parameter":"Mercury","value":"2.4","value_num":2.4,"unit":"µg/L","statistic":"hourly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7439-97-6","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":"unchanged"},"section":"OAC 252:730 Appendix G Table 2","page":134,"quote":"Mercury 7439976 2.4 1.302 2 0.050 0.051"}},{"id":"933f615570ac2668","parameter":"Mercury","value":"1.302","value_num":1.302,"unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7439-97-6","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":"unchanged"},"section":"OAC 252:730 Appendix G Table 2","page":134,"quote":"Mercury 7439976 2.4 1.302 2 0.050 0.051"}},{"id":"cdbff8bf41b203d8","parameter":"Mercury","value":"2","value_num":2,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7439-97-6","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":"unchanged"},"section":"OAC 252:730 Appendix G Table 2","page":134,"quote":"Mercury 7439976 2.4 1.302 2 0.050 0.051"}},{"id":"1a720bab850aa78f","parameter":"Mercury","value":"0.050","value_num":0.05,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7439-97-6","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":"unchanged"},"section":"OAC 252:730 Appendix G Table 2","page":134,"quote":"Mercury 7439976 2.4 1.302 2 0.050 0.051"}},{"id":"1edb7fe78a257eca","parameter":"Mercury","value":"0.051","value_num":0.051,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7439-97-6","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":"unchanged"},"section":"OAC 252:730 Appendix G Table 2","page":134,"quote":"Mercury 7439976 2.4 1.302 2 0.050 0.051"}},{"id":"09a2837024848d4d","parameter":"Mercury (T)","value":".00028","value_num":0.00028,"unit":"Kg/kkg (or pounds per 1,000 lb) of product","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7439-97-6","place":["US"],"conditions":["route is direct","cites is 40 CFR 415","the discharge is of the Subpart F—Chlor-alkali Subcategory (Chlorine and Sodium or Potassium Hydroxide Production)","existing sources (BPT)","table: Subpart F—Chlor-Alkali Mercury Cells"],"cite":{"instrument":"us_40cfr415","title":"40 CFR Part 415 — PART 415—INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-08-01","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-40.xml?part=415","source_sha256":"ebf67428a51e85f12785b92d537e6878c5f9838c87722ac2db82b3db673d1e23","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 415.62 (BPT)","page":null,"quote":"Mercury (T) .00028 .00014"}},{"id":"7b650d152e65ac75","parameter":"Mercury (T)","value":".00014","value_num":0.00014,"unit":"Kg/kkg (or pounds per 1,000 lb) of product","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7439-97-6","place":["US"],"conditions":["route is direct","cites is 40 CFR 415","the discharge is of the Subpart F—Chlor-alkali Subcategory (Chlorine and Sodium or Potassium Hydroxide Production)","existing sources (BPT)","table: Subpart F—Chlor-Alkali Mercury Cells"],"cite":{"instrument":"us_40cfr415","title":"40 CFR Part 415 — PART 415—INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-08-01","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-40.xml?part=415","source_sha256":"ebf67428a51e85f12785b92d537e6878c5f9838c87722ac2db82b3db673d1e23","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 415.62 (BPT)","page":null,"quote":"Mercury (T) .00028 .00014"}},{"id":"f52b414a3e371de3","parameter":"Mercury (T)","value":"0.00023","value_num":0.00023,"unit":"Kg/kkg (or pounds per 1,000 lb) of product","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7439-97-6","place":["US"],"conditions":["route is direct","cites is 40 CFR 415","the discharge is of the Subpart F—Chlor-alkali Subcategory (Chlorine and Sodium or Potassium Hydroxide Production)","existing sources (BAT)","table: Subpart F—Chlor-Alkali-Mercury Cells"],"cite":{"instrument":"us_40cfr415","title":"40 CFR Part 415 — PART 415—INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-08-01","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-40.xml?part=415","source_sha256":"ebf67428a51e85f12785b92d537e6878c5f9838c87722ac2db82b3db673d1e23","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 415.63 (BAT)","page":null,"quote":"Mercury (T) 0.00023 0.00010"}},{"id":"52e3d4999d0dd780","parameter":"Mercury (T)","value":"0.00010","value_num":0.0001,"unit":"Kg/kkg (or pounds per 1,000 lb) of product","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7439-97-6","place":["US"],"conditions":["route is direct","cites is 40 CFR 415","the discharge is of the Subpart F—Chlor-alkali Subcategory (Chlorine and Sodium or Potassium Hydroxide Production)","existing sources (BAT)","table: Subpart F—Chlor-Alkali-Mercury Cells"],"cite":{"instrument":"us_40cfr415","title":"40 CFR Part 415 — PART 415—INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-08-01","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-40.xml?part=415","source_sha256":"ebf67428a51e85f12785b92d537e6878c5f9838c87722ac2db82b3db673d1e23","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 415.63 (BAT)","page":null,"quote":"Mercury (T) 0.00023 0.00010"}},{"id":"431134db781bfde6","parameter":"Mercury (T)","value":"0.00023","value_num":0.00023,"unit":"Kq/kkg (or pounds per 1,000 lb) of product","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7439-97-6","place":["US"],"conditions":["route is direct","cites is 40 CFR 415","the discharge is of the Subpart F—Chlor-alkali Subcategory (Chlorine and Sodium or Potassium Hydroxide Production)","new sources (NSPS)","(a) Any new source subject to this subpart and using the mercury cell process must achieve the following new source performance standards (NSPS):","table: Subpart F—Chlor-Alkali-Mercury Cells"],"cite":{"instrument":"us_40cfr415","title":"40 CFR Part 415 — PART 415—INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-08-01","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-40.xml?part=415","source_sha256":"ebf67428a51e85f12785b92d537e6878c5f9838c87722ac2db82b3db673d1e23","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 415.65 (NSPS)","page":null,"quote":"Mercury (T) 0.00023 0.00010"}},{"id":"f4e86876c11a8834","parameter":"Mercury (T)","value":"0.00010","value_num":0.0001,"unit":"Kq/kkg (or pounds per 1,000 lb) of product","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7439-97-6","place":["US"],"conditions":["route is direct","cites is 40 CFR 415","the discharge is of the Subpart F—Chlor-alkali Subcategory (Chlorine and Sodium or Potassium Hydroxide Production)","new sources (NSPS)","(a) Any new source subject to this subpart and using the mercury cell process must achieve the following new source performance standards (NSPS):","table: Subpart F—Chlor-Alkali-Mercury Cells"],"cite":{"instrument":"us_40cfr415","title":"40 CFR Part 415 — PART 415—INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-08-01","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-40.xml?part=415","source_sha256":"ebf67428a51e85f12785b92d537e6878c5f9838c87722ac2db82b3db673d1e23","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 415.65 (NSPS)","page":null,"quote":"Mercury (T) 0.00023 0.00010"}},{"id":"4d83164d2b5082a7","parameter":"Mercury (T)","value":"0.11","value_num":0.11,"unit":"mg/L","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"sewer","parameter_key":"cas:7439-97-6","place":["US"],"conditions":["route is sewer","cites is 40 CFR 415","the discharge is of the Subpart F—Chlor-alkali Subcategory (Chlorine and Sodium or Potassium Hydroxide Production)","new sources (PSNS)","table: Subpart F—Chlor-Alkali-Mercury Cells"],"cite":{"instrument":"us_40cfr415","title":"40 CFR Part 415 — PART 415—INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-08-01","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-40.xml?part=415","source_sha256":"ebf67428a51e85f12785b92d537e6878c5f9838c87722ac2db82b3db673d1e23","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 415.66 (PSNS)","page":null,"quote":"Mercury (T) 0.11 0.048"}},{"id":"9ed575502c4fa1d9","parameter":"Mercury (T)","value":"0.048","value_num":0.048,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"sewer","parameter_key":"cas:7439-97-6","place":["US"],"conditions":["route is sewer","cites is 40 CFR 415","the discharge is of the Subpart F—Chlor-alkali Subcategory (Chlorine and Sodium or Potassium Hydroxide Production)","new sources (PSNS)","table: Subpart F—Chlor-Alkali-Mercury Cells"],"cite":{"instrument":"us_40cfr415","title":"40 CFR Part 415 — PART 415—INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-08-01","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-40.xml?part=415","source_sha256":"ebf67428a51e85f12785b92d537e6878c5f9838c87722ac2db82b3db673d1e23","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 415.66 (PSNS)","page":null,"quote":"Mercury (T) 0.11 0.048"}},{"id":"5bc45c0e6c25be8f","parameter":"Mercury","value":"3.906","value_num":3.906,"unit":"mg/kg (pounds per million pounds) of antimony contained in sodium antimonate product","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7439-97-6","place":["US"],"conditions":["route is direct","cites is 40 CFR 421","the discharge is of the Subpart N—Primary Antimony Subcategory","existing sources (BPT)","(a) Sodium Antimonate Autoclave Wastewater.","table: BPT Limitations for the Primary Antimony Subcategory"],"cite":{"instrument":"us_40cfr421","title":"40 CFR Part 421 — PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 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