Health Canada’s December 2025 summary tables compile the Guidelines for Canadian Drinking Water Quality. The table lists maximum acceptable concentrations for aluminium, antimony, arsenic, cadmium, chromium, lead, mercury, uranium, and other non-HMI parameters. Several entries also include ALARA or operational guidance notes, but the routeable concentration values are the source-reported MACs. The document is a drinking-water guideline instrument, not a food-contaminant standard. The controlled-vocabulary routeable values from this source are captured in data/evidence/regulatory_limits.csv; uranium is documented on the regulation page and gap-logged because it is outside the current CSV species vocabulary.
Update history
The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and the full version history lives in git. When DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.
| Commit | Date | Change | Description |
|---|---|---|---|
| a8052bb | 2026-08-09 | major | 1 section added; narrative text revised |