{"query":{"parameter":"bis chloromethyl ether","place":"US-CO","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-CO","US"],"parameter_keys":["cas:542-88-1","cas:53622-12-1","name:bis(2-chloromethyl) ether","name:bis(2-chloromethyl)ether"],"names_matched":[["bis chloromethyl ether","cas:542-88-1"],["bis 1 chloromethyl propyl ether","cas:53622-12-1"],["bis 2 chloromethyl ether","name:bis(2-chloromethyl) ether"],["bis 2 chloromethyl ether","name:bis(2-chloromethyl)ether"]],"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":10,"offset":0,"returned":10,"next_offset":null,"rows":[{"id":"b439ee45f7fe50c2","parameter":"Bis(chloromethyl)ether (BCME)","value":"0.00016","value_num":0.00016,"unit":"µg/L","statistic":"monthly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:542-88-1","place":["US-CO"],"conditions":["receiving_water is freshwater","segments classified for water supply (Table B note 2)"],"cite":{"instrument":"us_co_wqs","title":"Colorado Regulation No. 31 (5 CCR 1002-31) Basic Standards and Methodologies for Surface Water: Table B organic chemicals, Table III metals, Table IV metals at selected hardness","issuer":"State of Colorado, Water Quality Control Commission (Department of Public Health and Environment)","edition":"5 CCR 1002-31 effective December 31, 2024 (adopted August 21, 2024), the Secretary of State's official PDF; 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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":"5bb36fae4f350b9e","parameter":"Bis(chloromethyl)ether","value":"7.2e-05","value_num":0.000072,"unit":"µg/L","direction":"max","kind":"guideline","medium":"drinking_water","level":"national","parameter_key":"cas:542-88-1","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":"539ad63d40f349e5","parameter":"Bis(Chloromethyl) Ether","value":"0.017","value_num":0.017,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:542-88-1","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","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); 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or file_url, a public https address of it."},"post":"/api/v1/certificate"}]}