{"query":{"parameter":"chlorpyrifos","place":"US-AZ","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-AZ","US"],"parameter_keys":["cas:2921-88-2","cas:5598-13-0"],"names_matched":[["chlorpyrifos","cas:2921-88-2"],["chlorpyrifos methyl","cas:5598-13-0"]],"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":["Chlorpyrifos Methyl"],"says":"4 rows share a parameter key with a longer name holding \"chlorpyrifos\" but are printed under names without these words (that key is wider than the name), or keyed to a CAS number \"chlorpyrifos\" does not name (another substance, whatever words its name holds): not sent. 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R18-11-104; uses by water in Appendix B)"],"cite":{"instrument":"us_az_wqs","title":"Arizona A.A.C. 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R18-11-104; uses by water in Appendix B)"],"cite":{"instrument":"us_az_wqs","title":"Arizona A.A.C. 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R18-11-104; uses by water in Appendix B)"],"cite":{"instrument":"us_az_wqs","title":"Arizona A.A.C. R18-11 Appendix A: Table 1 numeric water quality standards by designated use, and Tables 2-9 hardness-dependent metals","issuer":"State of Arizona, Department of Environmental Quality","edition":"18 A.A.C. 11 as US EPA posts it in effect for CWA purposes (effective June 10, 2025; cover September 19, 2025); Appendix A as amended at 22 A.A.R. 2328, effective August 2, 2016 (Supp. 16-4)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/az-chapter11.pdf","source_sha256":"99f94cb118d44c2d748701484be39ab062258b07e3912fae7c9a651fcc4fc6ce","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"18 A.A.C. 11, Appendix A, Table 1","page":35,"quote":null}},{"id":"99cc26fd0fc70468","parameter":"Chlorpyrifos","value":"0.083","value_num":0.083,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:2921-88-2","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); 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":"Chlorpyrifos 2921882 0.083 0.041 0.011 0.0056 1986"}},{"id":"fcce0faa80670cff","parameter":"Chlorpyrifos","value":"0.041","value_num":0.041,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:2921-88-2","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 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); 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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":"ad32294afe8a32b6","parameter":"Chlorpyrifos","value":"8.4","value_num":8.4,"unit":"µg/L","direction":"max","kind":"guideline","medium":"drinking_water","level":"national","parameter_key":"cas:2921-88-2","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":"0e839d7cf1ee86db","parameter":"Chlorpyrifos","value":"0.011","value_num":0.011,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:2921-88-2","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 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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