{"query":{"parameter":"nitrate","place":"DE","medium":null,"statistic":null,"kind":null},"searched":{"places":["DE","EU"],"parameter_keys":["cas:14797-55-8","cas:27247-96-7","cas:506-93-4","cas:10277-43-7","cas:627-13-4","name:nitrate and nitrite","name:nitrate as n","name:nitrate - n","name:nitrate-n + nitrite-n","name:nitrate + nitrite","name:nitrate + nitrite as n","name:nitrate+nitrite","name:nitrate/nitrite","name:nitrate/nitrite as n","name:nitrate-nitrogen","name:nitrate plus nitrite","name:nitrate plus nitrite nitrogen","name:nitrite + nitrate","name:nitrite+nitrate","name:nitrite plus nitrate","cas:10102-05-3","cas:10102-45-1","name:total nitrate and nitrite","name:total nitrate + nitrite","name:nitrates as n","name:nitrates et nitrites","name:nitrates + nitrites","name:nitrates+nitrites"],"names_matched":[["nitrate","cas:14797-55-8"],["2 ethylhexyl nitrate","cas:27247-96-7"],["guanidine nitrate","cas:506-93-4"],["lanthanum nitrate hexahydrate","cas:10277-43-7"],["n propyl nitrate","cas:627-13-4"],["nitrate and nitrite","name:nitrate and nitrite"],["nitrate and nitrite as n","name:nitrate and nitrite"],["nitrate as n","name:nitrate as n"],["nitrate d ethyl 2 hexyle","cas:27247-96-7"],["nitrate n","name:nitrate - n"],["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"],["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"],["nitrate nitrite as n","name:nitrate/nitrite as n"],["nitrate nitrite as nitrogen","name:nitrate + nitrite"],["nitrate nitrite as nitrogen","name:nitrate + nitrite as n"],["nitrate nitrite as nitrogen","name:nitrate+nitrite"],["nitrate nitrite as nitrogen","name:nitrate/nitrite"],["nitrate nitrite as nitrogen","name:nitrate/nitrite as n"],["nitrate nitrite sum as nitrogen","name:nitrate + nitrite"],["nitrate nitrite sum as nitrogen","name:nitrate + nitrite as n"],["nitrate nitrite sum as nitrogen","name:nitrate+nitrite"],["nitrate nitrite sum as nitrogen","name:nitrate/nitrite"],["nitrate nitrite sum as nitrogen","name:nitrate/nitrite as n"],["nitrate nitrogen","name:nitrate-nitrogen"],["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 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"],["palladium nitrate","cas:10102-05-3"],["propyl nitrate","cas:627-13-4"],["thallium i nitrate","cas:10102-45-1"],["thallium l nitrate","cas:10102-45-1"],["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"],["nitrates as n","name:nitrates as n","nitrates"],["nitrates et nitrites","name:nitrates et nitrites","nitrates"],["nitrates et nitrites n no2 et n no3","name:nitrates et nitrites","nitrates"],["nitrates nitrites","name:nitrates + nitrites","nitrates"],["nitrates nitrites","name:nitrates+nitrites","nitrates"],["nitrates nitrites exprimes en n","name:nitrates + nitrites","nitrates"],["nitrates nitrites exprimes en n","name:nitrates+nitrites","nitrates"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":2,"offset":0,"returned":2,"next_offset":null,"rows":[{"id":"8958f91169a0fd4a","parameter":"Nitrat","value":"50 x 10³","value_num":50000,"unit":"µg/l","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:14797-55-8","place":["DE"],"conditions":["receiving_water is freshwater"],"cite":{"instrument":"de_ogewv_anl8","title":"Oberflächengewässerverordnung (OGewV) 2016, Anlage 8 Tabelle 2 — Umweltqualitätsnormen zur Beurteilung des chemischen Zustands (prioritäre Stoffe)","issuer":null,"edition":"Fundstelle: BGBl. I 2016,1424 - 1431","source_url":"https://www.gesetze-im-internet.de/ogewv_2016/anlage_8.html","source_sha256":"a008b8a7e68eb38101cdc6f028f2420c22d03804953cf75f33288789997d1284","fetched_at":"2026-10-10","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Anlage 8 Tabelle 2 Nr. 46, JD-UQN oberirdische Gewässer ohne Übergangsgewässer","page":null,"quote":"46 Nitrat 50 x 10 3"}},{"id":"d3a02d1b32411ca7","parameter":"Nitrate","value":"50 mg/l","value_num":50,"unit":"mg/l","direction":"max","kind":"limit","medium":"drinking_water","level":"eu","parameter_key":"cas:14797-55-8","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":"DE"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"nitrate\", 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":"DE"},"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"}]}