{"query":{"parameter":"methylmercury 1","place":"US-MI","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-MI","US"],"parameter_keys":["cas:22967-92-6","cas:7439-97-6","name:mercury, including methylmercury","name:methylmercury"],"names_matched":[["methylmercury 1","cas:22967-92-6"],["mercury including methylmercury","cas:7439-97-6","methylmercury"],["mercury including methylmercury","name:mercury, including methylmercury","methylmercury"],["mercury including methylmercury total recoverable","cas:7439-97-6","methylmercury"],["methylmercury","name:methylmercury","methylmercury"],["methylmercury water column","name:methylmercury","methylmercury"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order","not_sent":{"rows":358,"names":["Mercury","Mercury, total","Hg","Mercury (T)","~Mercury (elemental)","Mercury—All Others","Mercury (dissolved)","Mercury (including methylmercury)"],"says":"358 rows share a parameter key with a longer name holding \"methylmercury 1\" but are printed under names without these words (that key is wider than the name), or keyed to a CAS number \"methylmercury 1\" does not name (another substance, whatever words its name holds): not sent. Ask for one by its name or CAS number."}},"total":5,"offset":0,"returned":5,"next_offset":null,"rows":[{"id":"ef3578a5419e0c27","parameter":"Mercury, including methylmercury","value":"0.0013","value_num":0.0013,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:mercury, including methylmercury","place":["US-MI"],"conditions":["receiving_water is freshwater"],"cite":{"instrument":"us_mi_wqs","title":"Michigan Part 4 Water Quality Standards (R 323.1041-1117): Rule 57 aquatic life (Tables 1-2), wildlife (Table 4) and human health (Tables 7-8) values; Rule 51 dissolved solids and chlorides, Rule 53 pH, Rule 64 dissolved oxygen","issuer":"State of Michigan, Department of Environmental Quality (now EGLE), Water Bureau","edition":"Part 4 Water Quality Standards, R 323.1041-1117, filed and effective January 13, 2006, as US EPA posts it in effect for CWA purposes","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mi-part4-wqs.pdf","source_sha256":"e0d887941416c17cde61963ce255daf22285ab07fb30051ea72d077601179bbe","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"R 323.1057(3) Table 4","page":39,"quote":"Mercury, including methylmercury......................................0.0013"}},{"id":"c910c3aa33f73712","parameter":"~Methyl Mercury","value":"7.8","value_num":7.8,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:22967-92-6","place":["US"],"conditions":["Resident Soil (mg/kg)"],"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":"sols","column":"residentiel"}},{"id":"f96684753a3cbc33","parameter":"~Methyl Mercury","value":"120","value_num":120,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:22967-92-6","place":["US"],"conditions":["Industrial Soil (mg/kg)"],"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":"sols","column":"industriel"}},{"id":"8d8e3f9b2df141fb","parameter":"~Methyl Mercury","value":"14","value_num":14,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:22967-92-6","place":["US"],"conditions":["Protection of Groundwater SSLs: Risk-based SSL (mg/kg); 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":"2d3c6a408af92698","parameter":"~Methyl Mercury","value":"2","value_num":2,"unit":"µg/L","direction":"max","kind":"guideline","medium":"drinking_water","level":"national","parameter_key":"cas:22967-92-6","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"}}],"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-MI"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"methylmercury 1\", 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-MI"},"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"}]}