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Ask for one by its name or CAS number."}},"total":8,"offset":0,"returned":8,"next_offset":null,"rows":[{"id":"fe09431f1bf4eca9","parameter":"MCPA","value":"0,0026","value_num":0.0026,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:94-74-6","place":["CA-QC"],"conditions":["receiving_water is freshwater"],"cite":{"instrument":"ca_qc_criteres_eau","title":"Critères de qualité de l'eau de surface (MELCCFP) — vie aquatique : VAFe, CVAA et CVAC, eau douce et eau salée, toutes les fiches","issuer":"Ministère de l'Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (MELCCFP)","edition":"répertoire en ligne du MELCCFP, chaque fiche telle que servie le 2026-10-09 (each row names its fiche, its URL and its sha256)","source_url":"https://www.environnement.gouv.qc.ca/eau/criteres_eau/index.asp","source_sha256":"8808aa0b6ab877cc6c07ac7b3eed26ad6967cf19ea161430cd515d9c92e4bd75","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"fiche S0307 (MCPA) — critère de vie aquatique chronique (CVAC)","page":null,"quote":"0,0026 (CCME, 2002)"}},{"id":"69de593e582fc914","parameter":"MCPA","value":"0,0042","value_num":0.0042,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:94-74-6","place":["CA-QC"],"conditions":["receiving_water is marine"],"cite":{"instrument":"ca_qc_criteres_eau","title":"Critères de qualité de l'eau de surface (MELCCFP) — vie aquatique : VAFe, CVAA et CVAC, eau douce et eau salée, toutes les fiches","issuer":"Ministère de l'Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (MELCCFP)","edition":"répertoire en ligne du MELCCFP, chaque fiche telle que servie le 2026-10-09 (each row names its fiche, its URL and its sha256)","source_url":"https://www.environnement.gouv.qc.ca/eau/criteres_eau/index.asp","source_sha256":"8808aa0b6ab877cc6c07ac7b3eed26ad6967cf19ea161430cd515d9c92e4bd75","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"fiche S0307 (MCPA) — critère de vie aquatique chronique (CVAC)","page":null,"quote":"0,0042 (CCME, 2002) Cette concentration s'applique aux eaux saumâtres et salées."}},{"id":"5c30fe42885c2ecf","parameter":"MCPA","value":"30","value_num":30,"unit":"µg/L","direction":"max","kind":"guideline","medium":"groundwater","level":"regional","parameter_key":"cas:94-74-6","place":["CA-QC"],"conditions":["Eau de consommation"],"cite":{"instrument":"ca_qc_eaux_souterraines","title":"Guide d'intervention — Annexe 7 : Grille des critères de qualité des eaux souterraines","issuer":"Ministère de l'Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (MELCCFP)","edition":"mai 2021","source_url":"https://environnement.gouv.qc.ca/sol/terrains/guide-intervention/annexe7.xlsx","source_sha256":"524eb58a8fbb45fb67a028b495f8c546614d9afe041986e4b4fe302ea6700761","fetched_at":"2026-09-03","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"IX – Pesticides","page":null,"quote":null,"column":"consommation"}},{"id":"73af04d8b59765e4","parameter":"MCPA","value":"260","value_num":260,"unit":"µg/L","direction":"max","kind":"guideline","medium":"groundwater","level":"regional","parameter_key":"cas:94-74-6","place":["CA-QC"],"conditions":["Résurgence dans l'eau de surface"],"cite":{"instrument":"ca_qc_eaux_souterraines","title":"Guide d'intervention — Annexe 7 : Grille des critères de qualité des eaux souterraines","issuer":"Ministère de l'Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (MELCCFP)","edition":"mai 2021","source_url":"https://environnement.gouv.qc.ca/sol/terrains/guide-intervention/annexe7.xlsx","source_sha256":"524eb58a8fbb45fb67a028b495f8c546614d9afe041986e4b4fe302ea6700761","fetched_at":"2026-09-03","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"IX – Pesticides","page":null,"quote":null,"column":"resurgence"}},{"id":"49f781590d91e942","parameter":"Acide (4-chloro-2-méthylphénoxy), acétique, aussi appelé MCPA","value":"30","value_num":30,"unit":"µg/L","direction":"max","kind":"limit","medium":"drinking_water","level":"regional","parameter_key":"cas:94-74-6","place":["CA-QC"],"conditions":[],"cite":{"instrument":"ca_qc_rqep","title":"Règlement sur la qualité de l'eau potable (chapitre Q-2, r. 40), Annexe 1 — normes de qualité de l'eau potable: substances inorganiques, organiques et radioactives","issuer":"Gouvernement du Québec (Loi sur la qualité de l'environnement, chapitre Q-2)","edition":"À jour au 1er mai 2026","source_url":"https://www.legisquebec.gouv.qc.ca/fr/document/rc/Q-2,%20r.%2040","source_sha256":"b068f0bb04185246f572828cc43edce2fa774edd1adb4a04deb175cc235a9a9e","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Annexe 1, 3. 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