{"query":{"parameter":"endrin aldehyde","place":"US-WA","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-WA","US"],"parameter_keys":["cas:7421-93-4","name:endrin aldehyde"],"names_matched":[["endrin aldehyde","cas:7421-93-4"],["endrin aldehyde","name:endrin aldehyde"]],"match":"exact","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":5,"offset":0,"returned":5,"next_offset":null,"rows":[{"id":"be6867e6d539a1cd","parameter":"Endrin Aldehyde","value":"0.034","value_num":0.034,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7421-93-4","place":["US-WA"],"conditions":["all surface waters of the state with fish harvesting, recreation or (water & organisms) domestic water supply uses; human health criteria apply in fresh and marine waters alike (WAC 173-201A-240(5)(b))"],"cite":{"instrument":"us_wa_wqs","title":"Washington WAC 173-201A Water Quality Standards for Surface Waters: Table 240 toxic substances (aquatic life fresh and marine acute/chronic; 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human health criteria apply in fresh and marine waters alike (WAC 173-201A-240(5)(b))"],"cite":{"instrument":"us_wa_wqs","title":"Washington WAC 173-201A Water Quality Standards for Surface Waters: Table 240 toxic substances (aquatic life fresh and marine acute/chronic; human health), fresh water dissolved oxygen, marine temperature, dissolved oxygen and pH","issuer":"State of Washington, Department of Ecology","edition":"aquatic life: WAC 173-201A-240(5)(b) Table 240 as US EPA posts it in effect for CWA purposes (effective December 20, 2024; WAC print of 9/12/2023); human health: the WAC page as served 2026-10-14 (WSR 24-24-056, effective 12/28/24), which EPA's posting names as the human health criteria in effect; WAC 173-201A-210 as served 2026-10-14","source_url":"https://www.epa.gov/system/files/documents/2025-03/wa_wqs_0011_122024.pdf","source_sha256":"3d3172a99e8699f8bd484471dbf9dddad02001e806dc0efc15562047ae07c895","fetched_at":"2026-10-14","section":"WAC 173-201A-240(5)(b) Table 240 (human health)","page":null,"quote":"Endrin Aldehyde 7421934 - - - - 0.034 0.035"}},{"id":"c78a6150ac57db10","parameter":"Endrin Aldehyde","value":"1","value_num":1,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:7421-93-4","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); 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or file_url, a public https address of it."},"post":"/api/v1/certificate"}]}