{"query":{"parameter":"heptachlor","place":"US-KY","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-KY","US"],"parameter_keys":["cas:1024-57-3","cas:76-44-8","name:heptachlor*","name:heptachlor & heptachlor epoxide","name:heptachlor und heptachlorepoxid","name:epoxyde d’heptachlore","name:heptachlore* et epoxyde d’heptachlore*"],"names_matched":[["heptachlor","cas:1024-57-3"],["heptachlor","cas:76-44-8"],["heptachlor","name:heptachlor*"],["heptachlor heptachlor epoxide","name:heptachlor & heptachlor epoxide"],["heptachlor heptachlor epoxide total","name:heptachlor & heptachlor epoxide"],["heptachlor und heptachlorepoxid","name:heptachlor und heptachlorepoxid"],["epoxyde d heptachlore","name:epoxyde d’heptachlore","heptachlore"],["heptachlore et epoxyde d heptachlore","name:heptachlore* et epoxyde d’heptachlore*","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"},"total":35,"offset":0,"returned":35,"next_offset":null,"rows":[{"id":"1affaea6106f2d07","parameter":"Heptachlor epoxide","value":"0.00003 9","value_num":0.000039,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:1024-57-3","place":["US-KY"],"conditions":["receiving_water is freshwater","surface waters designated domestic water supply, at the point of withdrawal (401 KAR 10:031 Section 5)"],"cite":{"instrument":"us_ky_wqs","title":"Kentucky 401 KAR 10:031 Surface water standards: Section 6 Table 1 (human health DWS and fish consumption; warm water aquatic habitat acute and chronic), phenol, pH, dissolved oxygen, un-ionized ammonia and total residual chlorine","issuer":"Commonwealth of Kentucky, Energy and Environment Cabinet (Division of Water)","edition":"401 KAR 10:031 as amended effective January 3, 2020 (46 Ky.R. 222, 1251, 1858), as US EPA posts it in effect for CWA purposes (Legislative Research Commission PDF version)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/kywqs-standards.pdf","source_sha256":"7655d78848eca0b80362f67fcf4b01ff17df206b77f0636528ec4220e3a30e71","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"401 KAR 10:031 Section 6 Table 1","page":7,"quote":null}},{"id":"9142184737dda3b0","parameter":"Heptachlor epoxide","value":"0.000039","value_num":0.000039,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:1024-57-3","place":["US-KY"],"conditions":["receiving_water is freshwater","all surface water at the edge of the assigned mixing zone, except points where water is withdrawn for domestic water supply (401 KAR 10:031 Section 2(3))"],"cite":{"instrument":"us_ky_wqs","title":"Kentucky 401 KAR 10:031 Surface water standards: Section 6 Table 1 (human health DWS and fish consumption; warm water aquatic habitat acute and chronic), phenol, pH, dissolved oxygen, un-ionized ammonia and total residual chlorine","issuer":"Commonwealth of Kentucky, Energy and Environment Cabinet (Division of Water)","edition":"401 KAR 10:031 as amended effective January 3, 2020 (46 Ky.R. 222, 1251, 1858), as US EPA posts it in effect for CWA purposes (Legislative Research Commission PDF version)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/kywqs-standards.pdf","source_sha256":"7655d78848eca0b80362f67fcf4b01ff17df206b77f0636528ec4220e3a30e71","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"401 KAR 10:031 Section 6 Table 1","page":7,"quote":null}},{"id":"9dadd399346040d0","parameter":"Heptachlor epoxide","value":"0.52","value_num":0.52,"unit":"µg/L","statistic":"hourly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:1024-57-3","place":["US-KY"],"conditions":["receiving_water is freshwater","surface waters designated warm water aquatic habitat, and cold water aquatic habitat, which takes the warm water criteria (401 KAR 10:031 Section 4(1)-(2))"],"cite":{"instrument":"us_ky_wqs","title":"Kentucky 401 KAR 10:031 Surface water standards: Section 6 Table 1 (human health DWS and fish consumption; warm water aquatic habitat acute and chronic), phenol, pH, dissolved oxygen, un-ionized ammonia and total residual chlorine","issuer":"Commonwealth of Kentucky, Energy and Environment Cabinet (Division of Water)","edition":"401 KAR 10:031 as amended effective January 3, 2020 (46 Ky.R. 222, 1251, 1858), as US EPA posts it in effect for CWA purposes (Legislative Research Commission PDF version)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/kywqs-standards.pdf","source_sha256":"7655d78848eca0b80362f67fcf4b01ff17df206b77f0636528ec4220e3a30e71","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"401 KAR 10:031 Section 6 Table 1","page":7,"quote":null}},{"id":"97ba84fa7b9f91b3","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-KY"],"conditions":["receiving_water is freshwater","surface waters designated warm water aquatic habitat, and cold water aquatic habitat, which takes the warm water criteria (401 KAR 10:031 Section 4(1)-(2))"],"cite":{"instrument":"us_ky_wqs","title":"Kentucky 401 KAR 10:031 Surface water standards: Section 6 Table 1 (human health DWS and fish consumption; warm water aquatic habitat acute and chronic), phenol, pH, dissolved oxygen, un-ionized ammonia and total residual chlorine","issuer":"Commonwealth of Kentucky, Energy and Environment Cabinet (Division of Water)","edition":"401 KAR 10:031 as amended effective January 3, 2020 (46 Ky.R. 222, 1251, 1858), as US EPA posts it in effect for CWA purposes (Legislative Research Commission PDF version)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/kywqs-standards.pdf","source_sha256":"7655d78848eca0b80362f67fcf4b01ff17df206b77f0636528ec4220e3a30e71","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"401 KAR 10:031 Section 6 Table 1","page":7,"quote":null}},{"id":"0a0fd36021482aa6","parameter":"Heptachlor","value":"0.00007 9","value_num":0.000079,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:76-44-8","place":["US-KY"],"conditions":["receiving_water is freshwater","surface waters designated domestic water supply, at the point of withdrawal (401 KAR 10:031 Section 5)"],"cite":{"instrument":"us_ky_wqs","title":"Kentucky 401 KAR 10:031 Surface water standards: Section 6 Table 1 (human health DWS and fish consumption; warm water aquatic habitat acute and chronic), phenol, pH, dissolved oxygen, un-ionized ammonia and total residual chlorine","issuer":"Commonwealth of Kentucky, Energy and Environment Cabinet (Division of Water)","edition":"401 KAR 10:031 as amended effective January 3, 2020 (46 Ky.R. 222, 1251, 1858), as US EPA posts it in effect for CWA purposes (Legislative Research Commission PDF version)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/kywqs-standards.pdf","source_sha256":"7655d78848eca0b80362f67fcf4b01ff17df206b77f0636528ec4220e3a30e71","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"401 KAR 10:031 Section 6 Table 1","page":7,"quote":null}},{"id":"fc654825810d0bb0","parameter":"Heptachlor","value":"0.000079","value_num":0.000079,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:76-44-8","place":["US-KY"],"conditions":["receiving_water is freshwater","all surface water at the edge of the assigned mixing zone, except points where water is withdrawn for domestic water supply (401 KAR 10:031 Section 2(3))"],"cite":{"instrument":"us_ky_wqs","title":"Kentucky 401 KAR 10:031 Surface water standards: Section 6 Table 1 (human health DWS and fish consumption; warm water aquatic habitat acute and chronic), phenol, pH, dissolved oxygen, un-ionized ammonia and total residual chlorine","issuer":"Commonwealth of Kentucky, Energy and Environment Cabinet (Division of Water)","edition":"401 KAR 10:031 as amended effective January 3, 2020 (46 Ky.R. 222, 1251, 1858), as US EPA posts it in effect for CWA purposes (Legislative Research Commission PDF version)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/kywqs-standards.pdf","source_sha256":"7655d78848eca0b80362f67fcf4b01ff17df206b77f0636528ec4220e3a30e71","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"401 KAR 10:031 Section 6 Table 1","page":7,"quote":null}},{"id":"f2eca8ef67432d17","parameter":"Heptachlor","value":"0.52","value_num":0.52,"unit":"µg/L","statistic":"hourly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:76-44-8","place":["US-KY"],"conditions":["receiving_water is freshwater","surface waters designated warm water aquatic habitat, and cold water aquatic habitat, which takes the warm water criteria (401 KAR 10:031 Section 4(1)-(2))"],"cite":{"instrument":"us_ky_wqs","title":"Kentucky 401 KAR 10:031 Surface water standards: Section 6 Table 1 (human health DWS and fish consumption; warm water aquatic habitat acute and chronic), phenol, pH, dissolved oxygen, un-ionized ammonia and total residual chlorine","issuer":"Commonwealth of Kentucky, Energy and Environment Cabinet (Division of Water)","edition":"401 KAR 10:031 as amended effective January 3, 2020 (46 Ky.R. 222, 1251, 1858), as US EPA posts it in effect for CWA purposes (Legislative Research Commission PDF version)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/kywqs-standards.pdf","source_sha256":"7655d78848eca0b80362f67fcf4b01ff17df206b77f0636528ec4220e3a30e71","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"401 KAR 10:031 Section 6 Table 1","page":7,"quote":null}},{"id":"ac2342f94e8ef90a","parameter":"Heptachlor","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:76-44-8","place":["US-KY"],"conditions":["receiving_water is freshwater","surface waters designated warm water aquatic habitat, and cold water aquatic habitat, which takes the warm water criteria (401 KAR 10:031 Section 4(1)-(2))"],"cite":{"instrument":"us_ky_wqs","title":"Kentucky 401 KAR 10:031 Surface water standards: Section 6 Table 1 (human health DWS and fish consumption; warm water aquatic habitat acute and chronic), phenol, pH, dissolved oxygen, un-ionized ammonia and total residual chlorine","issuer":"Commonwealth of Kentucky, Energy and Environment Cabinet (Division of Water)","edition":"401 KAR 10:031 as amended effective January 3, 2020 (46 Ky.R. 222, 1251, 1858), as US EPA posts it in effect for CWA purposes (Legislative Research Commission PDF version)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/kywqs-standards.pdf","source_sha256":"7655d78848eca0b80362f67fcf4b01ff17df206b77f0636528ec4220e3a30e71","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"401 KAR 10:031 Section 6 Table 1","page":7,"quote":null}},{"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":"unchanged"},"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); 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":"unchanged"},"section":"National Recommended Aquatic Life Criteria table","page":null,"quote":"Heptachlor Epoxide (P) 1024573 0.52 0.0038 0.053 0.0036 1981"}},{"id":"3f8e3ac9c2baa04f","parameter":"Heptachlor Epoxide","value":"0.0038","value_num":0.0038,"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 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":"unchanged"},"section":"National Recommended Aquatic Life Criteria table","page":null,"quote":"Heptachlor Epoxide (P) 1024573 0.52 0.0038 0.053 0.0036 1981"}},{"id":"98636bad45965fbc","parameter":"Heptachlor Epoxide","value":"0.000032","value_num":0.000032,"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","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); each criterion carries its publication year","source_url":"https://www.epa.gov/wqc/national-recommended-water-quality-criteria-human-health-criteria-table","source_sha256":"a0229d5a613672b46a000c5b9925dd3a23c3e05914bb020b7f739c69cecbb5fe","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"National Recommended Water Quality Criteria — Human Health Criteria Table","page":null,"quote":"Heptachlor Epoxide (P) 1024573 0.000032 0.000032 2015"}},{"id":"8db491359051d529","parameter":"Heptachlor Epoxide","value":"0.000032","value_num":0.000032,"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","consumption of organism only: a water designated for fish and shellfish taken from it, not a drinking-water source (fresh or salt)"],"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); each criterion carries its publication year","source_url":"https://www.epa.gov/wqc/national-recommended-water-quality-criteria-human-health-criteria-table","source_sha256":"a0229d5a613672b46a000c5b9925dd3a23c3e05914bb020b7f739c69cecbb5fe","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"National Recommended Water Quality Criteria — Human Health Criteria Table","page":null,"quote":"Heptachlor Epoxide (P) 1024573 0.000032 0.000032 2015"}},{"id":"d31a821bdf5f8682","parameter":"Heptachlor Epoxide","value":"0.07","value_num":0.07,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:1024-57-3","place":["US"],"conditions":["Resident Soil (mg/kg)"],"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":"unchanged"},"section":null,"page":null,"quote":null,"table":"sols","column":"residentiel"}},{"id":"a6271772d4051f6e","parameter":"Heptachlor Epoxide","value":"0.33","value_num":0.33,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:1024-57-3","place":["US"],"conditions":["Industrial Soil (mg/kg)"],"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":"unchanged"},"section":null,"page":null,"quote":null,"table":"sols","column":"industriel"}},{"id":"f0d4ff3a5bedb194","parameter":"Heptachlor Epoxide","value":"2.8e-05","value_num":0.000028,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:1024-57-3","place":["US"],"conditions":["Protection of Groundwater SSLs: Risk-based SSL (mg/kg); 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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","section":"40 CFR 261.24, Table 1","page":null,"quote":"D031 Heptachlor (and its epoxide) 76-44-8 0.008"}},{"id":"091466d6b2ea1fae","parameter":"Heptachlor","value":"0.0004","value_num":0.0004,"unit":"mg/l","direction":"max","kind":"limit","medium":"drinking_water","level":"national","parameter_key":"cas:76-44-8","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":"unchanged"},"section":"141.61","page":null,"quote":null,"column":"mcl"}},{"id":"e9dfdb801ce2573f","parameter":"Heptachlor","value":"0.52","value_num":0.52,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:76-44-8","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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