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Document ID ca-gcdwqgtd-2015-04-24-4 Title Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Selenium URL https://www.canada.ca/en/health-canada/services/publications/healthy-living/guidelines-canadian-drinking-water-quality-guideline-technical-document-selenium/guidelines-canadian-drinking-water-quality-guideline-technical-document-selenium-page-6.html Jurisdiction /ca Subdomain(s) Drinking water, Groundwater Language en Status completed Analyzed at 2026-03-18 16:04:12.672597+00:00 Relevance Technical document supporting Canadian drinking water quality guidelines for selenium.
2 Qualitative 10 Quantitative 0 Definitions

Q Qualitative Requirements (2)

Req ID Category Intent Legal Status Name Subdomain(s) Context Conditions Confidence
#Q001designhealthmandatoryPlumbing Fittings Compliancedrinking waterUnder the National Plumbing Code of Canada, fittings must meet the requirements of plumbing standards for plumbing supply fittings, components and plastic pipes (NRCC, 2010).Applies to fittings under the National Plumbing Code of Canada.high
#Q002designhealthmandatoryDrinking Water Components NSF/ANSI Compliancedrinking waterThe Canadian Standards Association (CSA) standard for plastic pipes and the harmonized American Society for Mechanical Engineers/CSA standard for plumbing supply fittings as well as plumbing fittings (CSA, 2011a,b) require that components used for drinking water applications comply with the requirements of NSF/ANSI Standard 61.Applies to components used for drinking water applications.high

P Quantitative Requirements (10)

Req ID Category Intent Legal Status Name Subdomain(s) Limit Type Limit Value Context Conditions Confidence
#P001chemicalhealthmandatoryseleniumdrinking waterrequirement0.005 mg/LNSF/ANSI Standard 61 is a health-based leaching standard which limits the leaching of selenium into drinking water to 0.005 mg/L.Leaching from non-leaded brass components used for drinking water applicationshigh
#P002chemicalhealthguidanceseleniumotherrequirement400 µg dailyThe selenium monograph of Health Canada's Natural Health Products Directorate suggests a safe product dose of up to 400 µg daily for selenite, selenate and organoseleniumSafe product dose for natural health productshigh
#P003chemicalhealthguidelineseleniumotherMAC45 µg/dayThe Institute of Medicine (2000) derived tolerable upper intake level (ULs) for selenium of 45 µg/day for infants aged 0-6 monthsinfants aged 0-6 monthshigh
#P004chemicalhealthguidelineseleniumotherMAC60 µg/daytolerable upper intake level (ULs) for selenium of 60 µg/day for infants aged 7-12 monthsinfants aged 7-12 monthshigh
#P005chemicalhealthguidelineseleniumotherMAC90 µg/daytolerable upper intake level (ULs) for selenium of 90 µg/day for children 1-3 years of agechildren 1-3 years of agehigh
#P006chemicalhealthguidelineseleniumotherMAC150 µg/daytolerable upper intake level (ULs) for selenium of 150 µg/day for children 4-8 years of agechildren 4-8 years of agehigh
#P007chemicalhealthguidelineseleniumotherMAC280 µg/daytolerable upper intake level (ULs) for selenium of 280 µg/day for children 9-13 years of agechildren 9-13 years of agehigh
#P008chemicalhealthguidelineseleniumotherMAC400 µg/dayThe UL for adults of 400 µg/day was derived based on the studies of Yang and colleaguesadultshigh
#P009chemicalhealthguidelineseleniumotherMAC7 µg/kg bw/dayThus, the UL of 7 µg/kg bw/day was adjusted for older infants, children and adolescents on the basis of relative body weight.older infants, children and adolescentshigh
#P010unknownhealthmandatorydrinking water allocation factordrinking waterrequirement20 %Default proportion of the daily intake allocated to drinking water in the calculation of the maximum acceptable concentration.Used as the default allocation factor when exposure data are not sufficient to modify ithigh

D Definitions (0)

No definitions.