{"query":{"parameter":"toxaphene","place":"US-IA","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-IA","US"],"parameter_keys":["cas:8001-35-2","name:toxaphene*","name:toxaphene, weathered"],"names_matched":[["toxaphene","cas:8001-35-2"],["toxaphene","name:toxaphene*"],["toxaphene weathered","name:toxaphene, weathered"]],"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"},"total":32,"offset":0,"returned":32,"next_offset":null,"rows":[{"id":"b448083e0854ef39","parameter":"Toxaphene","value":".037","value_num":0.037,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:8001-35-2","place":["US-IA"],"conditions":["receiving_water is freshwater","class B(CW1) waters: cold water aquatic life, type 1"],"cite":{"instrument":"us_ia_wqs","title":"Iowa Administrative Code 567—Chapter 61 Water Quality Standards: Table 1 criteria by use designation, Table 2 dissolved oxygen, pH, Table 4 sulfate, and the livestock-watering ion guidelines kept in effect","issuer":"State of Iowa, Environmental Protection Commission (Department of Natural Resources)","edition":"567 IAC chapter 61, effective February 2, 2022 (IAC 2/9/22), as US EPA posts it in effect for CWA purposes (cover February 13, 2023: 61.3(2)\"g\" kept in effect, EPA having reserved action on its removal; part of 61.3(3)(a)(1) disapproved)","source_url":"https://www.epa.gov/system/files/documents/2024-03/ia-chapter61-2023.pdf","source_sha256":"6d136ce607bf1fc6c839c1cea688892f0a113214bf6026fddab9f18e72d4c0d9","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"567 IAC 61.3(3) Table 1","page":19,"quote":"Toxaphene Chronic .037 — .002 .002 .002 .037 — —"}},{"id":"94d61ca4a4ca3051","parameter":"Toxaphene","value":".002","value_num":0.002,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:8001-35-2","place":["US-IA"],"conditions":["receiving_water is freshwater","class B(WW-1) waters: warm water aquatic life, type 1"],"cite":{"instrument":"us_ia_wqs","title":"Iowa Administrative Code 567—Chapter 61 Water Quality Standards: Table 1 criteria by use designation, Table 2 dissolved oxygen, pH, Table 4 sulfate, and the livestock-watering ion guidelines kept in effect","issuer":"State of Iowa, Environmental Protection Commission (Department of Natural Resources)","edition":"567 IAC chapter 61, effective February 2, 2022 (IAC 2/9/22), as US EPA posts it in effect for CWA purposes (cover February 13, 2023: 61.3(2)\"g\" kept in effect, EPA having reserved action on its removal; part of 61.3(3)(a)(1) disapproved)","source_url":"https://www.epa.gov/system/files/documents/2024-03/ia-chapter61-2023.pdf","source_sha256":"6d136ce607bf1fc6c839c1cea688892f0a113214bf6026fddab9f18e72d4c0d9","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"567 IAC 61.3(3) Table 1","page":19,"quote":"Toxaphene Chronic .037 — .002 .002 .002 .037 — —"}},{"id":"01f1f66d28744665","parameter":"Toxaphene","value":".002","value_num":0.002,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:8001-35-2","place":["US-IA"],"conditions":["receiving_water is freshwater","class B(WW-2) waters: warm water aquatic life, type 2"],"cite":{"instrument":"us_ia_wqs","title":"Iowa Administrative Code 567—Chapter 61 Water Quality Standards: Table 1 criteria by use designation, Table 2 dissolved oxygen, pH, Table 4 sulfate, and the livestock-watering ion guidelines kept in effect","issuer":"State of Iowa, Environmental Protection Commission (Department of Natural Resources)","edition":"567 IAC chapter 61, effective February 2, 2022 (IAC 2/9/22), as US EPA posts it in effect for CWA purposes (cover February 13, 2023: 61.3(2)\"g\" kept in effect, EPA having reserved action on its removal; part of 61.3(3)(a)(1) disapproved)","source_url":"https://www.epa.gov/system/files/documents/2024-03/ia-chapter61-2023.pdf","source_sha256":"6d136ce607bf1fc6c839c1cea688892f0a113214bf6026fddab9f18e72d4c0d9","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"567 IAC 61.3(3) Table 1","page":19,"quote":"Toxaphene Chronic .037 — .002 .002 .002 .037 — —"}},{"id":"ee3286b5e56f2572","parameter":"Toxaphene","value":".002","value_num":0.002,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:8001-35-2","place":["US-IA"],"conditions":["receiving_water is freshwater","class B(WW-3) waters: warm water aquatic life, type 3"],"cite":{"instrument":"us_ia_wqs","title":"Iowa Administrative Code 567—Chapter 61 Water Quality Standards: Table 1 criteria by use designation, Table 2 dissolved oxygen, pH, Table 4 sulfate, and the livestock-watering ion guidelines kept in effect","issuer":"State of Iowa, Environmental Protection Commission (Department of Natural Resources)","edition":"567 IAC chapter 61, effective February 2, 2022 (IAC 2/9/22), as US EPA posts it in effect for CWA purposes (cover February 13, 2023: 61.3(2)\"g\" kept in effect, EPA having reserved action on its removal; part of 61.3(3)(a)(1) disapproved)","source_url":"https://www.epa.gov/system/files/documents/2024-03/ia-chapter61-2023.pdf","source_sha256":"6d136ce607bf1fc6c839c1cea688892f0a113214bf6026fddab9f18e72d4c0d9","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"567 IAC 61.3(3) Table 1","page":19,"quote":"Toxaphene Chronic .037 — .002 .002 .002 .037 — —"}},{"id":"750dcabc86bcc7c7","parameter":"Toxaphene","value":".037","value_num":0.037,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:8001-35-2","place":["US-IA"],"conditions":["receiving_water is freshwater","class B(LW) waters: lakes and wetlands aquatic life"],"cite":{"instrument":"us_ia_wqs","title":"Iowa Administrative Code 567—Chapter 61 Water Quality Standards: Table 1 criteria by use designation, Table 2 dissolved oxygen, pH, Table 4 sulfate, and the livestock-watering ion guidelines kept in effect","issuer":"State of Iowa, Environmental Protection Commission (Department of Natural Resources)","edition":"567 IAC chapter 61, effective February 2, 2022 (IAC 2/9/22), as US EPA posts it in effect for CWA purposes (cover February 13, 2023: 61.3(2)\"g\" kept in effect, EPA having reserved action on its removal; part of 61.3(3)(a)(1) disapproved)","source_url":"https://www.epa.gov/system/files/documents/2024-03/ia-chapter61-2023.pdf","source_sha256":"6d136ce607bf1fc6c839c1cea688892f0a113214bf6026fddab9f18e72d4c0d9","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"567 IAC 61.3(3) Table 1","page":19,"quote":"Toxaphene Chronic .037 — .002 .002 .002 .037 — —"}},{"id":"f68835138a7d15c0","parameter":"Toxaphene","value":".73","value_num":0.73,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:8001-35-2","place":["US-IA"],"conditions":["receiving_water is freshwater","class B(CW1) waters: cold water aquatic life, type 1"],"cite":{"instrument":"us_ia_wqs","title":"Iowa Administrative Code 567—Chapter 61 Water Quality Standards: Table 1 criteria by use designation, Table 2 dissolved oxygen, pH, Table 4 sulfate, and the livestock-watering ion guidelines kept in effect","issuer":"State of Iowa, Environmental Protection Commission (Department of Natural Resources)","edition":"567 IAC chapter 61, effective February 2, 2022 (IAC 2/9/22), as US EPA posts it in effect for CWA purposes (cover February 13, 2023: 61.3(2)\"g\" kept in effect, EPA having reserved action on its removal; part of 61.3(3)(a)(1) disapproved)","source_url":"https://www.epa.gov/system/files/documents/2024-03/ia-chapter61-2023.pdf","source_sha256":"6d136ce607bf1fc6c839c1cea688892f0a113214bf6026fddab9f18e72d4c0d9","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"567 IAC 61.3(3) Table 1","page":19,"quote":"Acute .73 — .73 .73 .73 .73 — —"}},{"id":"33351cc8d38e762c","parameter":"Toxaphene","value":".73","value_num":0.73,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:8001-35-2","place":["US-IA"],"conditions":["receiving_water is freshwater","class B(WW-1) waters: warm water aquatic life, type 1"],"cite":{"instrument":"us_ia_wqs","title":"Iowa Administrative Code 567—Chapter 61 Water Quality Standards: Table 1 criteria by use designation, Table 2 dissolved oxygen, pH, Table 4 sulfate, and the livestock-watering ion guidelines kept in effect","issuer":"State of Iowa, Environmental Protection Commission (Department of Natural Resources)","edition":"567 IAC chapter 61, effective February 2, 2022 (IAC 2/9/22), as US EPA posts it in effect for CWA purposes (cover February 13, 2023: 61.3(2)\"g\" kept in effect, EPA having reserved action on its removal; part of 61.3(3)(a)(1) disapproved)","source_url":"https://www.epa.gov/system/files/documents/2024-03/ia-chapter61-2023.pdf","source_sha256":"6d136ce607bf1fc6c839c1cea688892f0a113214bf6026fddab9f18e72d4c0d9","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"567 IAC 61.3(3) Table 1","page":19,"quote":"Acute .73 — .73 .73 .73 .73 — —"}},{"id":"c32a8b735085258c","parameter":"Toxaphene","value":".73","value_num":0.73,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:8001-35-2","place":["US-IA"],"conditions":["receiving_water is freshwater","class B(WW-2) waters: warm water aquatic life, type 2"],"cite":{"instrument":"us_ia_wqs","title":"Iowa Administrative Code 567—Chapter 61 Water Quality Standards: Table 1 criteria by use designation, Table 2 dissolved oxygen, pH, Table 4 sulfate, and the livestock-watering ion guidelines kept in effect","issuer":"State of Iowa, Environmental Protection Commission (Department of Natural Resources)","edition":"567 IAC chapter 61, effective February 2, 2022 (IAC 2/9/22), as US EPA posts it in effect for CWA purposes (cover February 13, 2023: 61.3(2)\"g\" kept in effect, EPA having reserved action on its removal; part of 61.3(3)(a)(1) disapproved)","source_url":"https://www.epa.gov/system/files/documents/2024-03/ia-chapter61-2023.pdf","source_sha256":"6d136ce607bf1fc6c839c1cea688892f0a113214bf6026fddab9f18e72d4c0d9","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"567 IAC 61.3(3) Table 1","page":19,"quote":"Acute .73 — .73 .73 .73 .73 — —"}},{"id":"389779f13db95946","parameter":"Toxaphene","value":".73","value_num":0.73,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:8001-35-2","place":["US-IA"],"conditions":["receiving_water is freshwater","class B(WW-3) waters: warm water aquatic life, type 3"],"cite":{"instrument":"us_ia_wqs","title":"Iowa Administrative Code 567—Chapter 61 Water Quality Standards: Table 1 criteria by use designation, Table 2 dissolved oxygen, pH, Table 4 sulfate, and the livestock-watering ion guidelines kept in effect","issuer":"State of Iowa, Environmental Protection Commission (Department of Natural Resources)","edition":"567 IAC chapter 61, effective February 2, 2022 (IAC 2/9/22), as US EPA posts it in effect for CWA purposes (cover February 13, 2023: 61.3(2)\"g\" kept in effect, EPA having reserved action on its removal; part of 61.3(3)(a)(1) disapproved)","source_url":"https://www.epa.gov/system/files/documents/2024-03/ia-chapter61-2023.pdf","source_sha256":"6d136ce607bf1fc6c839c1cea688892f0a113214bf6026fddab9f18e72d4c0d9","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"567 IAC 61.3(3) Table 1","page":19,"quote":"Acute .73 — .73 .73 .73 .73 — —"}},{"id":"226d1681390e10c7","parameter":"Toxaphene","value":".73","value_num":0.73,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:8001-35-2","place":["US-IA"],"conditions":["receiving_water is freshwater","class B(LW) waters: lakes and wetlands aquatic life"],"cite":{"instrument":"us_ia_wqs","title":"Iowa Administrative Code 567—Chapter 61 Water Quality Standards: Table 1 criteria by use designation, Table 2 dissolved oxygen, pH, Table 4 sulfate, and the livestock-watering ion guidelines kept in effect","issuer":"State of Iowa, Environmental Protection Commission (Department of Natural Resources)","edition":"567 IAC chapter 61, effective February 2, 2022 (IAC 2/9/22), as US EPA posts it in effect for CWA purposes (cover February 13, 2023: 61.3(2)\"g\" kept in effect, EPA having reserved action on its removal; part of 61.3(3)(a)(1) disapproved)","source_url":"https://www.epa.gov/system/files/documents/2024-03/ia-chapter61-2023.pdf","source_sha256":"6d136ce607bf1fc6c839c1cea688892f0a113214bf6026fddab9f18e72d4c0d9","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"567 IAC 61.3(3) Table 1","page":19,"quote":"Acute .73 — .73 .73 .73 .73 — —"}},{"id":"b9eee37c38204d2f","parameter":"Toxaphene","value":".0028(e)","value_num":0.0028,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:8001-35-2","place":["US-IA"],"conditions":["receiving_water is freshwater","class HH waters: human health (fish consumption)","also class B(LW), B(CW1), B(WW-1), B(WW-2) or B(WW-3) (note (e))"],"cite":{"instrument":"us_ia_wqs","title":"Iowa Administrative Code 567—Chapter 61 Water Quality Standards: Table 1 criteria by use designation, Table 2 dissolved oxygen, pH, Table 4 sulfate, and the livestock-watering ion guidelines kept in effect","issuer":"State of Iowa, Environmental Protection Commission (Department of Natural Resources)","edition":"567 IAC chapter 61, effective February 2, 2022 (IAC 2/9/22), as US EPA posts it in effect for CWA purposes (cover February 13, 2023: 61.3(2)\"g\" kept in effect, EPA having reserved action on its removal; part of 61.3(3)(a)(1) disapproved)","source_url":"https://www.epa.gov/system/files/documents/2024-03/ia-chapter61-2023.pdf","source_sha256":"6d136ce607bf1fc6c839c1cea688892f0a113214bf6026fddab9f18e72d4c0d9","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"567 IAC 61.3(3) Table 1","page":19,"quote":"HumanHealth—Fish — — — — — — — .0028(e)"}},{"id":"6eb11ed6e424f356","parameter":"Toxaphene","value":".0028(f)","value_num":0.0028,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:8001-35-2","place":["US-IA"],"conditions":["receiving_water is freshwater","class HH waters: human health (fish consumption)","also class C (note (f))"],"cite":{"instrument":"us_ia_wqs","title":"Iowa Administrative Code 567—Chapter 61 Water Quality Standards: Table 1 criteria by use designation, Table 2 dissolved oxygen, pH, Table 4 sulfate, and the livestock-watering ion guidelines kept in effect","issuer":"State of Iowa, Environmental Protection Commission (Department of Natural Resources)","edition":"567 IAC chapter 61, effective February 2, 2022 (IAC 2/9/22), as US EPA posts it in effect for CWA purposes (cover February 13, 2023: 61.3(2)\"g\" kept in effect, EPA having reserved action on its removal; part of 61.3(3)(a)(1) disapproved)","source_url":"https://www.epa.gov/system/files/documents/2024-03/ia-chapter61-2023.pdf","source_sha256":"6d136ce607bf1fc6c839c1cea688892f0a113214bf6026fddab9f18e72d4c0d9","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"567 IAC 61.3(3) Table 1","page":19,"quote":"HumanHealth—F&W — — — — — — — .0028(f)"}},{"id":"2c8b5dfd70842ed9","parameter":"Toxaphene","value":"0.5","value_num":0.5,"unit":"mg/L","direction":"max","kind":"threshold","medium":"leachate","level":"national","parameter_key":"cas:8001-35-2","place":["US"],"conditions":["(a) A solid waste (except manufactured gas plant waste) exhibits the characteristic of toxicity if, using the Toxicity Characteristic Leaching Procedure, test Method 1311 in “Test Methods for Evaluating Solid Waste, Physical/Chemical Methods,” EPA Publication SW-846, as incorporated by reference in § 260.11 of this chapter, the extract from a representative sample of the waste contains any of the contaminants listed in table 1 at the concentration equal to or greater than the respective value given in that table. Where the waste contains less than 0.5 percent filterable solids, the waste itself, after filtering using the methodology outlined in Method 1311, is considered to be the extract for the purpose of this section."],"cite":{"instrument":"us_40cfr261_24","title":"40 CFR 261.24 — Toxicity characteristic: Table 1, maximum concentration of contaminants for the toxicity characteristic (TCLP regulatory levels)","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"eCFR, 40 CFR 261.24 as of 2026-10-13 (title 40 up to date as of that day)","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-13/title-40.xml?part=261&section=261.24","source_sha256":"3a1ec9b0d3051c70e471e359275657b0fa6d98e80927d2217e82b2dbbca60961","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 261.24, Table 1","page":null,"quote":"D015 Toxaphene 8001-35-2 0.5"}},{"id":"031b32fc25b334fc","parameter":"Toxaphene","value":"0.0095","value_num":0.0095,"unit":"mg/L","statistic":"composite","direction":"max","kind":"limit","medium":"product","level":"national","parameter_key":"cas:8001-35-2","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":"Toxaphene 8001-35-2 0.0095 2.6"}},{"id":"6473fc4a9da2d899","parameter":"Toxaphene","value":"2.6","value_num":2.6,"unit":"mg/kg","statistic":"instant","direction":"max","kind":"limit","medium":"product","level":"national","parameter_key":"cas:8001-35-2","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":"Toxaphene 8001-35-2 0.0095 2.6"}},{"id":"22ce2f80b472aa25","parameter":"Toxaphene","value":"0.003","value_num":0.003,"unit":"mg/l","direction":"max","kind":"limit","medium":"drinking_water","level":"national","parameter_key":"cas:8001-35-2","place":["US"],"conditions":["40 CFR 141.2: Maximum contaminant level means the maximum permissible level of a contaminant in water which is delivered to any user of a public water system."],"cite":{"instrument":"us_npdwr","title":"40 CFR Part 141 — National Primary Drinking Water Regulations (eCFR, as of 2026-08-01)","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"eCFR as of 2026-08-01","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-40.xml?part=141","source_sha256":"bd534eb2d8af38e141e1cd6236134a638298fbf14791b30279eeb47d815d7767","fetched_at":"2026-08-29","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"141.61","page":null,"quote":null,"column":"mcl"}},{"id":"964f2f5f52c9115b","parameter":"Toxaphene","value":"0.73","value_num":0.73,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:8001-35-2","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); 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