{"query":{"parameter":"chloride","place":"US-AR","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-AR","US"],"parameter_keys":["cas:16887-00-6"],"names_matched":[["chloride","cas:16887-00-6"]],"match":"exact","order":"The place's own instruments first, then each place above it, each in its register's order","not_searched":{"names":102,"parameters":63,"some":["1 1 3 5 tetramethyl piperidinium chloride","1 1 dichlorethane ethylidene chloride","1 1 dichloroethylene 1 1 dichloroethene vinylidene chloride","1 1 dichloroethylene vinylidene chloride","1 decanaminium n decyl n n dimethyl chloride","1 propanaminium 2 3 dihydroxy n n n trimethyl chloride","2 3 dihydroxy n n n trimethyl 1 propanaminium chloride","2 acryloyloxy ethyl trimethylammonium chloride","2 chlorobenzyl chloride","2 ethyl hexanoyl chloride","2 ethylhexyl chloride","2 propen 1 aminium n564n n dimethyl n propenyl chloride homopolymer","3 chloro 2 hydroxypropyltrimethyl ammonium chloride","3 chloro 2 hydroxypropyltrimethylammonium chloride","4 4 4 trifluoroacetoacetyl chloride","4 chlorobenzyl chloride","5 methylene chloride","acetyl chloride","alkyl dimethyl benzyl ammonium chloride","allyl chloride","aluminum chloride hydroxide","ammonium chloride","benzal chloride","benzoyl chloride","benzoyl chloride 2 methyl"],"says":"102 other names contain \"chloride\" (63 parameters, over the 40 searched at once): ask for one of them by name."}},"total":4,"offset":0,"returned":4,"next_offset":null,"rows":[{"id":"004db19ab9aaaa57","parameter":"Chloride","value":"(c) Domestic Water Supply Criteria In no case shall discharges cause concentrations in any waterbody to exceed two hundred fifty milligrams per liter (250 mg/L), two hundred fifty milligrams per liter (250 mg/L), and five hundred milligrams per liter (500 mg/L) of chlorides, sulfates, and total dissolved solids, respectively, or cause concentrations to exceed the applicable criteria, except in accordance with 8 CAR §§ 21-306 and 21-308 (previously Rules 2.306 and 2.308).","value_num":250,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16887-00-6","place":["US-AR"],"conditions":["receiving_water is freshwater","the paragraph headed 'Domestic Water Supply Criteria' (8 CAR § 21-511(c)); Appendix A's site-specific mineral criteria govern the streams it lists"],"cite":{"instrument":"us_ar_wqs","title":"Arkansas 8 CAR § 21 Rule Establishing Water Quality Standards for Surface Waters: § 21-508(d) toxic substances (aquatic life, dissolved and total metals, human health), § 21-504 pH and § 21-511(c) domestic water supply minerals","issuer":"State of Arkansas, Department of Energy and Environment, Division of Environmental Quality (Arkansas Pollution Control and Ecology Commission)","edition":"8 CAR § 21 effective October 3, 2025 (formerly APC&EC Rule 2), as US EPA posts it in effect for CWA purposes (cover sheet December 19, 2025, listing the provisions EPA has not acted on)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/arwqs.pdf","source_sha256":"326f27bcfea43539608334468a0fd31284fd61648df9463cd202eaf8a2361ecb","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"8 CAR § 21-511(c)","page":37,"quote":"(c) Domestic Water Supply Criteria In no case shall discharges cause concentrations in any waterbody to exceed two hundred fifty milligrams per liter (250 mg/L), two hundred fifty milligrams per liter (250 mg/L), and five hundred milligrams per liter (500 mg/L) of chlorides, sulfates, and total dissolved solids, respectively, or cause concentrations to exceed the applicable criteria, except in accordance with 8 CAR §§ 21-306 and 21-308 (previously Rules 2.306 and 2.308)."}},{"id":"b05b51d768cb5142","parameter":"Chloride","value":"860000","value_num":860000,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:16887-00-6","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":"Chloride 16887006 860000 230000 — — 1988"}},{"id":"29842f23a80f2175","parameter":"Chloride","value":"230000","value_num":230000,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:16887-00-6","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":"Chloride 16887006 860000 230000 — — 1988"}},{"id":"e89292cc53996141","parameter":"Chloride","value":"250 mg/l","value_num":250,"direction":"max","kind":"guideline","medium":"drinking_water","level":"national","parameter_key":"cas:16887-00-6","place":["US"],"conditions":["40 CFR 143.1: The regulations in this subpart are not Federally enforceable but are intended as guidelines for the States."],"cite":{"instrument":"us_nsdwr","title":"40 CFR Part 143 — National Secondary 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=143","source_sha256":"a98e8b66948f546c71e119055eff012e6380857a255ec216a4247b658bcf040d","fetched_at":"2026-08-29","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"143.3","page":null,"quote":null,"column":"smcl"}}],"next":[{"tool":"check_values","says":"Has your user measured this? check_values sets each of their results beside every row held here, with a verdict and the row's cite.","arguments":{"place":"US-AR"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"chloride\", value, unit}, ...], any other parameters too."},"post":"/api/v1/check"},{"tool":"read_certificate","says":"Has your user a laboratory certificate? read_certificate reads every row it prints, each with its page, and checks them against these limits.","arguments":{"place":"US-AR"},"needs":{"content_base64":"The laboratory's certificate (PDF) or its XLSX, XLS or CSV export, as base64; or file_url, a public https address of it."},"post":"/api/v1/certificate"}]}