{"query":{"parameter":"total nitrate nitrite","place":"US-NJ","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-NJ","US"],"parameter_keys":["name:total nitrate + nitrite","cas:14797-55-8","name:total nitrate and nitrite"],"names_matched":[["total nitrate nitrite","name:total nitrate + nitrite"],["nitrate as n criterion also applies to total nitrate nitrite","cas:14797-55-8"],["total nitrate and nitrite","name:total nitrate and nitrite"],["total nitrate and nitrite as nitrogen","name:total nitrate and nitrite"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order","not_sent":{"rows":30,"names":["Nitrate (as N)","Nitrate","Nitrate (measured as nitrogen)","Nitrates"],"says":"30 rows share a parameter key with a longer name holding \"total nitrate nitrite\" but are printed under names without these words (that key is wider than the name), or keyed to a CAS number \"total nitrate nitrite\" does not name (another substance, whatever words its name holds): not sent. Ask for one by its name or CAS number."}},"total":2,"offset":0,"returned":2,"next_offset":null,"rows":[{"id":"abfeca3a6d00b7f6","parameter":"Total Nitrate + Nitrite","value":"10 (as Nitrogen)","value_num":10,"unit":"mg/l","direction":"max","kind":"guideline","medium":"drinking_water","level":"national","parameter_key":"name:total nitrate + nitrite","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":"unchanged"},"section":"141.51","page":null,"quote":null,"column":"mclg"}},{"id":"b096c4b022e2b10c","parameter":"Total Nitrate and Nitrite","value":"10 (as Nitrogen)","value_num":10,"unit":"mg/l","direction":"max","kind":"limit","medium":"drinking_water","level":"national","parameter_key":"name:total nitrate and nitrite","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":"unchanged"},"section":"141.62","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-NJ"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"total nitrate nitrite\", 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-NJ"},"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"}]}