{"query":{"parameter":"diquat dibromide","place":"US-TN","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-TN","US"],"parameter_keys":["cas:85-00-7","cas:6385-62-2","cas:2764-72-9"],"names_matched":[["diquat dibromide","cas:85-00-7"],["dibromure de diquat monohydrate","cas:6385-62-2","diquat"],["diquat","cas:2764-72-9","diquat"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order","not_sent":{"rows":5,"names":["Diquat"],"says":"5 rows share a parameter key with a longer name holding \"diquat dibromide\" but are printed under names without these words (that key is wider than the name), or keyed to a CAS number \"diquat dibromide\" does not name (another substance, whatever words its name holds): not sent. Ask for one by its name or CAS number."}},"total":3,"offset":0,"returned":3,"next_offset":null,"rows":[{"id":"b27be9bfca5b8c38","parameter":"Diquat","value":"20","value_num":20,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:85-00-7","place":["US-TN"],"conditions":["receiving_water is freshwater","waters designated for domestic water supply (Rule 0400-40-03-.03(1))"],"cite":{"instrument":"us_tn_wqs","title":"Tennessee Rule 0400-40-03-.03 Criteria for Water Uses (Chapter 0400-40-03 General Water Quality Criteria): domestic water supply, fish and aquatic life (CMC/CCC) and recreation human health criteria; TDS, dissolved oxygen and pH","issuer":"State of Tennessee, Department of Environment and Conservation (Board of Water Quality, Oil, and Gas)","edition":"Chapter 0400-40-03 as revised March 2024 (amendments filed December 18, 2023, effective March 17, 2024), as US EPA posts it in effect for CWA purposes","source_url":"https://www.epa.gov/system/files/documents/2024-07/tn_wqs_0011_062024.pdf","source_sha256":"4c9ee91b2941f44106d7cbb5009fe40f470c0c530b183b399370ce4567242717","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Rule 0400-40-03-.03(1)(j)","page":5,"quote":"Antimony 6 Diquat 20"}},{"id":"e52e7153f8c5cc3e","parameter":"Diquat","value":".02","value_num":0.02,"unit":"mg/l","direction":"max","kind":"guideline","medium":"drinking_water","level":"national","parameter_key":"cas:85-00-7","place":["US"],"conditions":["40 CFR 141.2: Maximum contaminant level goals are nonenforceable health goals."],"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":"141.50, 141.61","page":null,"quote":null,"column":"mclg"}},{"id":"c4df775910097094","parameter":"Diquat","value":"0.02","value_num":0.02,"unit":"mg/l","direction":"max","kind":"limit","medium":"drinking_water","level":"national","parameter_key":"cas:85-00-7","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":"141.50, 141.61","page":null,"quote":null,"column":"mcl"}}],"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-TN"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"diquat dibromide\", 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-TN"},"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"}]}