{"query":{"parameter":"nitrite","place":"FR","medium":null,"statistic":null,"kind":null},"searched":{"places":["FR","EU"],"parameter_keys":["cas:14797-65-0","cas:71487-01-9","cas:109-95-5","cas:110-46-3","cas:542-56-3","name:nitrate and nitrite","cas:14797-55-8","name:nitrate-n + nitrite-n","name:nitrate + nitrite","name:nitrate + nitrite as n","name:nitrate/nitrite","name:nitrate/nitrite as n","name:nitrate plus nitrite","name:nitrate plus nitrite nitrogen","name:nitrite as n","cas:7632-00-0","name:nitrite - n","name:nitrite-n","name:nitrite + nitrate","name:nitrite+nitrate","name:nitrite plus nitrate","name:total nitrate and nitrite","name:total nitrate + nitrite","name:nitrates et nitrites","name:nitrates + nitrites","name:nitrates+nitrites"],"names_matched":[["nitrite","cas:14797-65-0"],["bis coconut oil alkyl dimethylammonium nitrite","cas:71487-01-9"],["ethyl nitrite","cas:109-95-5"],["isoamyl nitrite","cas:110-46-3"],["isobutyl nitrite","cas:542-56-3"],["nitrate and nitrite","name:nitrate and nitrite"],["nitrate and nitrite as n","name:nitrate and nitrite"],["nitrate as n criterion also applies to total nitrate nitrite","cas:14797-55-8"],["nitrate n nitrite n","name:nitrate-n + nitrite-n"],["nitrate nitrite","name:nitrate + nitrite"],["nitrate nitrite","name:nitrate + nitrite as n"],["nitrate nitrite","name:nitrate/nitrite"],["nitrate nitrite","name:nitrate/nitrite as n"],["nitrate nitrite as n","name:nitrate + nitrite"],["nitrate nitrite as n","name:nitrate + nitrite as n"],["nitrate nitrite as n","name:nitrate/nitrite"],["nitrate nitrite as n","name:nitrate/nitrite as n"],["nitrate plus nitrite","name:nitrate plus nitrite"],["nitrate plus nitrite as nitrogen n","name:nitrate plus nitrite"],["nitrate plus nitrite nitrogen","name:nitrate plus nitrite nitrogen"],["nitrite as n","name:nitrite as n"],["nitrite d ethyle","cas:109-95-5"],["nitrite d isoamyle","cas:110-46-3"],["nitrite de sodium","cas:7632-00-0"],["nitrite n","name:nitrite - n"],["nitrite n","name:nitrite-n"],["nitrite nitrate","name:nitrite + nitrate"],["nitrite nitrate","name:nitrite+nitrate"],["nitrite nitrate as n","name:nitrite + nitrate"],["nitrite nitrate as n","name:nitrite+nitrate"],["nitrite nitrate both as n","name:nitrite + nitrate"],["nitrite nitrate both as n","name:nitrite+nitrate"],["nitrite plus nitrate","name:nitrite plus nitrate"],["sodium nitrite","cas:7632-00-0"],["total nitrate and nitrite","name:total nitrate and nitrite"],["total nitrate and nitrite as nitrogen","name:total nitrate and nitrite"],["total nitrate nitrite","name:total nitrate + nitrite"],["dicoco alkyldimethyl ammonium nitrites","cas:71487-01-9","nitrites"],["nitrates et nitrites","name:nitrates et nitrites","nitrites"],["nitrates et nitrites n no2 et n no3","name:nitrates et nitrites","nitrites"],["nitrates nitrites","name:nitrates + nitrites","nitrites"],["nitrates nitrites","name:nitrates+nitrites","nitrites"],["nitrates nitrites exprimes en n","name:nitrates + nitrites","nitrites"],["nitrates nitrites exprimes en n","name:nitrates+nitrites","nitrites"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order","not_sent":{"rows":1,"names":["Nitrate"],"says":"1 rows share a parameter key with a longer name holding \"nitrite\" but are printed under names without these words (that key is wider than the name): not sent. Ask for one by its name or CAS number."}},"total":1,"offset":0,"returned":1,"next_offset":null,"rows":[{"id":"401b4ff0cc74f615","parameter":"Nitrite","value":"0,50 mg/l","value_num":0.5,"unit":"mg/l","direction":"max","kind":"limit","medium":"drinking_water","level":"eu","parameter_key":"cas:14797-65-0","place":["EU"],"conditions":[],"cite":{"instrument":"eu_dwd","title":"Directive (EU) 2020/2184 of the European Parliament and of the Council of 16 December 2020 on the quality of water intended for human consumption (recast), Annex I Part B — chemical parameters","issuer":"European Parliament and Council of the European Union","edition":"Directive (EU) 2020/2184, OJ L 435, 23.12.2020, p. 1","source_url":"https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32020L2184","source_sha256":"39c4a65fee1dfe9eecfdc1ba3f67d9dcbce681c4698a3b3dda2e9e9bb4fb0177","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"note":"Member States shall ensure that the condition [nitrate]/50 + [nitrite]/3 ≤ 1, where the square brackets signify the concentrations in mg/l for nitrate (NO 3 ) and nitrite (NO 2 ), is complied with and that the parametric value of 0,10 mg/l for nitrites is complied with ex water treatment works.","column":"valeur"}}],"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":"FR"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"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":"FR"},"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"}]}