Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Hardness

Although hardness may have significant aesthetic effects, a maximum acceptable level has not been established because public acceptance of hardness may vary considerably according to the local conditions. Water supplies with a hardness greater than 200 mg/L are considered poor but have been tolerated by consumers; those in excess of 500 mg/L are unacceptable for most domestic purposes.

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Dernière modification avril 17, 2026, 17:34 (TU)
Créé le avril 17, 2026, 17:34 (TU)
criticality_level []
geographic_scope []
open_canada_collection publication
open_canada_date_published 2017-01-24 00:00:00
open_canada_keywords {"fr": ["eau", "qualité de l'eau", "qualité de l'eau potable", "eau potable", "contaminants", "exposition aux contaminants", "dureté", "approvisionnement en eau avec dureté"], "en": ["water", "water quality", "drinking water quality", "potable water", "contaminants", "exposure to contaminants", "hardness", "water supplies with-a-hardness"]}
open_canada_subject ["health_and_safety"]
sensitivity_level unrestricted
title_fr Recommandations pour la qualité de l'eau potable au Canada : document technique – la dureté
update_frequency as_needed