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totaux et d’acides haloacétiques, le responsable doit identifier la concentration maximale obtenue durant le trimestre et calculer la moyenne des valeurs maximales obtenues pour 4 trimestres consécutifs."],"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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