{"query":{"parameter":"heptachlor epoxide","place":"US-UT","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-UT","US"],"parameter_keys":["cas:1024-57-3","cas:76-44-8","name:heptachlor & heptachlor epoxide","name:heptachlor*","name:heptachlor und heptachlorepoxid","name:epoxyde d’heptachlore","name:heptachlore* et epoxyde d’heptachlore*"],"names_matched":[["heptachlor epoxide","cas:1024-57-3"],["heptachlor and its epoxide","cas:76-44-8"],["heptachlor heptachlor epoxide","cas:76-44-8"],["heptachlor heptachlor epoxide","name:heptachlor & heptachlor epoxide"],["heptachlor heptachlor epoxide total","name:heptachlor & heptachlor epoxide"],["heptachlor","cas:76-44-8","heptachlor"],["heptachlor","name:heptachlor*","heptachlor"],["heptachlor und heptachlorepoxid","name:heptachlor und heptachlorepoxid","heptachlor"],["epoxyde d heptachlore","name:epoxyde d’heptachlore","epoxyde d heptachlore"],["heptachlore et epoxyde d heptachlore","name:heptachlore* et epoxyde d’heptachlore*","epoxyde d heptachlore"]],"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":25,"names":["Heptachlor","Heptachlor (and its epoxide)"],"says":"25 rows share a parameter key with a longer name holding \"heptachlor epoxide\" but are printed under names without these words (that key is wider than the name), or keyed to a CAS number \"heptachlor epoxide\" does not name (another substance, whatever words its name holds): not sent. Ask for one by its name or CAS number."}},"total":25,"offset":0,"returned":25,"next_offset":null,"rows":[{"id":"72ee81b2df08a770","parameter":"Heptachlor epoxide","value":"0.0038","value_num":0.0038,"unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:1024-57-3","place":["US-UT"],"conditions":["receiving_water is freshwater","water with the beneficial use Class 3A: cold water species of game fish and other cold water aquatic life (R317-2-6; uses by water in R317-2-13)"],"cite":{"instrument":"us_ut_wqs","title":"Utah Admin. Code R317-2-14 numeric criteria: Table 2.14.2 aquatic wildlife (Classes 3A-3D, 5) and Table 2.14.6 human health","issuer":"State of Utah, Department of Environmental Quality, Division of Water Quality (Water Quality Board)","edition":"R317-2 Standards of Quality for Waters of the State as US EPA posts it (Utah DEQ's Word file, PDF of September 24, 2025)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/utwqs.pdf","source_sha256":"ecd9919716fba76ef049e55c942f1387f9a8ec133cd140000105b0554af46a38","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Utah Admin. Code R317-2-14 Table 2.14.2","page":40,"quote":"Heptachlor epoxide 4 Day Average 0.0038 0.0038 0.0038 0.0038"}},{"id":"b232ec5f6f49733e","parameter":"Heptachlor epoxide","value":"0.0038","value_num":0.0038,"unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:1024-57-3","place":["US-UT"],"conditions":["receiving_water is freshwater","water with the beneficial use Class 3B: warm water species of game fish and other warm water aquatic life (R317-2-6; uses by water in R317-2-13)"],"cite":{"instrument":"us_ut_wqs","title":"Utah Admin. Code R317-2-14 numeric criteria: Table 2.14.2 aquatic wildlife (Classes 3A-3D, 5) and Table 2.14.6 human health","issuer":"State of Utah, Department of Environmental Quality, Division of Water Quality (Water Quality Board)","edition":"R317-2 Standards of Quality for Waters of the State as US EPA posts it (Utah DEQ's Word file, PDF of September 24, 2025)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/utwqs.pdf","source_sha256":"ecd9919716fba76ef049e55c942f1387f9a8ec133cd140000105b0554af46a38","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Utah Admin. Code R317-2-14 Table 2.14.2","page":40,"quote":"Heptachlor epoxide 4 Day Average 0.0038 0.0038 0.0038 0.0038"}},{"id":"d647d5a591f06835","parameter":"Heptachlor epoxide","value":"0.0038","value_num":0.0038,"unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:1024-57-3","place":["US-UT"],"conditions":["receiving_water is freshwater","water with the beneficial use Class 3C: nongame fish and other aquatic life (R317-2-6; uses by water in R317-2-13)"],"cite":{"instrument":"us_ut_wqs","title":"Utah Admin. Code R317-2-14 numeric criteria: Table 2.14.2 aquatic wildlife (Classes 3A-3D, 5) and Table 2.14.6 human health","issuer":"State of Utah, Department of Environmental Quality, Division of Water Quality (Water Quality Board)","edition":"R317-2 Standards of Quality for Waters of the State as US EPA posts it (Utah DEQ's Word file, PDF of September 24, 2025)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/utwqs.pdf","source_sha256":"ecd9919716fba76ef049e55c942f1387f9a8ec133cd140000105b0554af46a38","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Utah Admin. Code R317-2-14 Table 2.14.2","page":40,"quote":"Heptachlor epoxide 4 Day Average 0.0038 0.0038 0.0038 0.0038"}},{"id":"84be83522a5407a3","parameter":"Heptachlor epoxide","value":"0.0038","value_num":0.0038,"unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:1024-57-3","place":["US-UT"],"conditions":["receiving_water is freshwater","water with the beneficial use Class 3D: waterfowl, shore birds and other water-oriented wildlife (R317-2-6; uses by water in R317-2-13)"],"cite":{"instrument":"us_ut_wqs","title":"Utah Admin. Code R317-2-14 numeric criteria: Table 2.14.2 aquatic wildlife (Classes 3A-3D, 5) and Table 2.14.6 human health","issuer":"State of Utah, Department of Environmental Quality, Division of Water Quality (Water Quality Board)","edition":"R317-2 Standards of Quality for Waters of the State as US EPA posts it (Utah DEQ's Word file, PDF of September 24, 2025)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/utwqs.pdf","source_sha256":"ecd9919716fba76ef049e55c942f1387f9a8ec133cd140000105b0554af46a38","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Utah Admin. Code R317-2-14 Table 2.14.2","page":40,"quote":"Heptachlor epoxide 4 Day Average 0.0038 0.0038 0.0038 0.0038"}},{"id":"c259664088ec06ec","parameter":"Heptachlor epoxide","value":"0.26","value_num":0.26,"unit":"µg/L","statistic":"hourly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:1024-57-3","place":["US-UT"],"conditions":["receiving_water is freshwater","water with the beneficial use Class 3A: cold water species of game fish and other cold water aquatic life (R317-2-6; uses by water in R317-2-13)"],"cite":{"instrument":"us_ut_wqs","title":"Utah Admin. Code R317-2-14 numeric criteria: Table 2.14.2 aquatic wildlife (Classes 3A-3D, 5) and Table 2.14.6 human health","issuer":"State of Utah, Department of Environmental Quality, Division of Water Quality (Water Quality Board)","edition":"R317-2 Standards of Quality for Waters of the State as US EPA posts it (Utah DEQ's Word file, PDF of September 24, 2025)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/utwqs.pdf","source_sha256":"ecd9919716fba76ef049e55c942f1387f9a8ec133cd140000105b0554af46a38","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Utah Admin. Code R317-2-14 Table 2.14.2","page":40,"quote":"1 Hour Average 0.26 0.26 0.26 0.26"}},{"id":"8a8bc3d781de5d6c","parameter":"Heptachlor epoxide","value":"0.26","value_num":0.26,"unit":"µg/L","statistic":"hourly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:1024-57-3","place":["US-UT"],"conditions":["receiving_water is freshwater","water with the beneficial use Class 3B: warm water species of game fish and other warm water aquatic life (R317-2-6; uses by water in R317-2-13)"],"cite":{"instrument":"us_ut_wqs","title":"Utah Admin. Code R317-2-14 numeric criteria: Table 2.14.2 aquatic wildlife (Classes 3A-3D, 5) and Table 2.14.6 human health","issuer":"State of Utah, Department of Environmental Quality, Division of Water Quality (Water Quality Board)","edition":"R317-2 Standards of Quality for Waters of the State as US EPA posts it (Utah DEQ's Word file, PDF of September 24, 2025)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/utwqs.pdf","source_sha256":"ecd9919716fba76ef049e55c942f1387f9a8ec133cd140000105b0554af46a38","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Utah Admin. Code R317-2-14 Table 2.14.2","page":40,"quote":"1 Hour Average 0.26 0.26 0.26 0.26"}},{"id":"d461a9714f5ea5e0","parameter":"Heptachlor epoxide","value":"0.26","value_num":0.26,"unit":"µg/L","statistic":"hourly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:1024-57-3","place":["US-UT"],"conditions":["receiving_water is freshwater","water with the beneficial use Class 3C: nongame fish and other aquatic life (R317-2-6; uses by water in R317-2-13)"],"cite":{"instrument":"us_ut_wqs","title":"Utah Admin. Code R317-2-14 numeric criteria: Table 2.14.2 aquatic wildlife (Classes 3A-3D, 5) and Table 2.14.6 human health","issuer":"State of Utah, Department of Environmental Quality, Division of Water Quality (Water Quality Board)","edition":"R317-2 Standards of Quality for Waters of the State as US EPA posts it (Utah DEQ's Word file, PDF of September 24, 2025)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/utwqs.pdf","source_sha256":"ecd9919716fba76ef049e55c942f1387f9a8ec133cd140000105b0554af46a38","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Utah Admin. Code R317-2-14 Table 2.14.2","page":40,"quote":"1 Hour Average 0.26 0.26 0.26 0.26"}},{"id":"7eac81535be4d60e","parameter":"Heptachlor epoxide","value":"0.26","value_num":0.26,"unit":"µg/L","statistic":"hourly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:1024-57-3","place":["US-UT"],"conditions":["receiving_water is freshwater","water with the beneficial use Class 3D: waterfowl, shore birds and other water-oriented wildlife (R317-2-6; uses by water in R317-2-13)"],"cite":{"instrument":"us_ut_wqs","title":"Utah Admin. Code R317-2-14 numeric criteria: Table 2.14.2 aquatic wildlife (Classes 3A-3D, 5) and Table 2.14.6 human health","issuer":"State of Utah, Department of Environmental Quality, Division of Water Quality (Water Quality Board)","edition":"R317-2 Standards of Quality for Waters of the State as US EPA posts it (Utah DEQ's Word file, PDF of September 24, 2025)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/utwqs.pdf","source_sha256":"ecd9919716fba76ef049e55c942f1387f9a8ec133cd140000105b0554af46a38","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Utah Admin. Code R317-2-14 Table 2.14.2","page":40,"quote":"1 Hour Average 0.26 0.26 0.26 0.26"}},{"id":"37a26a3777c90df6","parameter":"Heptachlor Epoxide","value":"0.000032 B","value_num":0.000032,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:1024-57-3","place":["US-UT"],"conditions":["water with the beneficial use Class 1C: domestic water supply"],"cite":{"instrument":"us_ut_wqs","title":"Utah Admin. Code R317-2-14 numeric criteria: Table 2.14.2 aquatic wildlife (Classes 3A-3D, 5) and Table 2.14.6 human health","issuer":"State of Utah, Department of Environmental Quality, Division of Water Quality (Water Quality Board)","edition":"R317-2 Standards of Quality for Waters of the State as US EPA posts it (Utah DEQ's Word file, PDF of September 24, 2025)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/utwqs.pdf","source_sha256":"ecd9919716fba76ef049e55c942f1387f9a8ec133cd140000105b0554af46a38","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Utah Admin. Code R317-2-14 Table 2.14.6","page":47,"quote":"Heptachlor Epoxide 1024-57-3 0.000032 B 0.000032 B"}},{"id":"22541723e706664b","parameter":"Heptachlor Epoxide","value":"0.000032 B","value_num":0.000032,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:1024-57-3","place":["US-UT"],"conditions":["water with an aquatic wildlife beneficial use, Class 3A, 3B, 3C or 3D"],"cite":{"instrument":"us_ut_wqs","title":"Utah Admin. Code R317-2-14 numeric criteria: Table 2.14.2 aquatic wildlife (Classes 3A-3D, 5) and Table 2.14.6 human health","issuer":"State of Utah, Department of Environmental Quality, Division of Water Quality (Water Quality Board)","edition":"R317-2 Standards of Quality for Waters of the State as US EPA posts it (Utah DEQ's Word file, PDF of September 24, 2025)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/utwqs.pdf","source_sha256":"ecd9919716fba76ef049e55c942f1387f9a8ec133cd140000105b0554af46a38","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Utah Admin. Code R317-2-14 Table 2.14.6","page":47,"quote":"Heptachlor Epoxide 1024-57-3 0.000032 B 0.000032 B"}},{"id":"d7d47dcf0fa5b574","parameter":"Heptachlor epoxide","value":"0.016","value_num":0.016,"unit":"mg/L","statistic":"composite","direction":"max","kind":"limit","medium":"product","level":"national","parameter_key":"cas:1024-57-3","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":"Heptachlor epoxide 1024-57-3 0.016 0.066"}},{"id":"730f5aa843bf5c2c","parameter":"Heptachlor epoxide","value":"0.066","value_num":0.066,"unit":"mg/kg","statistic":"instant","direction":"max","kind":"limit","medium":"product","level":"national","parameter_key":"cas:1024-57-3","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":"Heptachlor epoxide 1024-57-3 0.016 0.066"}},{"id":"04a4bccc832c3994","parameter":"Heptachlor epoxide","value":"0.0002","value_num":0.0002,"unit":"mg/l","direction":"max","kind":"limit","medium":"drinking_water","level":"national","parameter_key":"cas:1024-57-3","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":"10f49ed5ec2ed0bf","parameter":"Heptachlor Epoxide","value":"0.52","value_num":0.52,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:1024-57-3","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); 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