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Document ID ca-gcdwqbec-2023-03-10 Title Guidelines for Canadian drinking water quality boron: Exposure considerations URL https://www.canada.ca/en/health-canada/services/publications/healthy-living/guidelines-canadian-drinking-water-quality-guideline-technical-document-boron/exposure-considerations.html Jurisdiction /ca Subdomain(s) Drinking water, Groundwater, Surface water Language en Status completed Analyzed at 2026-03-17 16:21:16.462161+00:00 Relevance Technical document supporting Canadian drinking water quality standards for boron.

Q Qualitative Requirements (0)

No qualitative requirements.

P Quantitative Requirements (16)

Req ID Category Intent Legal Status Name Subdomain(s) Limit Type Limit Value Context Conditions Confidence
#P001chemicalhealthmandatoryBoric acid and its saltsotherrequirement< 5 %conditionally permitted in cosmetic productsApplicable to cosmetic productshigh
#P002chemicalhealthmandatoryBoric acid and its salts (cosmetic products)otherrequirement< 5 %conditionally permitted in cosmetic productsApplicable to cosmetic productshigh
#P003operationalreportingguidelineMethod Detection Limit (NDWS)drinking waterrequirement0.01 mg/LNational Drinking Water Survey (2009–2010)Municipal water systemshigh
#P004operationalreportingguidelineMethod Detection Limit (Alberta)drinking waterrequirement0.002-0.05 mg/LAlberta Environment and Sustainable Resource Development (2013)Municipal and non-municipal systems; Alberta data reported as dissolved boronhigh
#P005operationalreportingguidelineMethod Detection Limit (Manitoba)drinking waterrequirement0.01-0.1 mg/LManitoba Conservation and Water Stewardship (2013)Municipal systemshigh
#P006operationalreportingguidelineMethod Detection Limit (New Brunswick)drinking waterrequirement0.005-0.1 mg/LNew Brunswick Department of Health (2013)Municipal systemshigh
#P007operationalreportingguidelineMethod Detection Limit (Newfoundland)drinking waterrequirement0.005-0.01 mg/LNewfoundland and Labrador Department of Environment and Conservation (2013)Municipal systemshigh
#P008operationalreportingguidelineMethod Detection Limit (Nova Scotia)drinking waterrequirement0.005-0.1 mg/LNova Scotia Environment (2019)Municipal systemshigh
#P009operationalreportingguidelineMethod Detection Limit (Ontario)drinking waterrequirement0.001-0.05 mg/LOntario Ministry of the Environment (2013)Municipal systemshigh
#P010operationalreportingguidelineMethod Detection Limit (Quebec)drinking waterrequirement0.02-0.1 mg/LMinistère du Développement durable, de l’Environnement et de la Faune et des Parcs du Québec (2013)Municipal systemshigh
#P011operationalreportingguidelineMethod Detection Limit (Saskatchewan)drinking waterrequirement0.001-0.01 mg/LSaskatchewan Water Security Agency (2012)Municipal systemshigh
#P012operationalreportingguidelineMethod Detection Limit (Yukon)drinking waterrequirement0.04-0.1 mg/LYukon Health and Social Services (2013)Municipal systemshigh
#P013unknownhealthguidanceAverage Daily Intake (Derived)drinking waterrequirement10 µg/kg bw per dayDerived average daily intake for the Canadian populationBased on blood boron levels from Alberta studyhigh
#P014physicalunknownguidanceSolubility of Boric Acidotherrequirement49 g/LProperties of boric acid in waterhigh
#P015operationaltreatmentguidancepH range for maximum adsorption of borondrinking waterrequirement7.5-9.0 pHAdsorption-desorption reactions with soil and sedimentAdsorption is influenced by pH, boron concentration, and soil chemical compositionhigh
#P016chemicaltreatmentguidancepKa of Boron in waterdrinking waterrequirement9.2 pHBoron speciation in solutionAt pH above 9.2 (alkaline), boron is mainly present as borate ionshigh

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