WHO’s 2022 Guidelines for drinking-water quality provide international guideline values and supporting risk-assessment explanations for drinking-water contaminants. For this ingest, controlled-vocabulary rows are loaded for antimony, arsenic, cadmium, total chromium, lead, and nickel. The aluminium section does not establish a formal guideline value and is gap-logged. The inorganic-mercury and uranium values are documented on the regulation page but gap-logged rather than loaded because the current regulatory_limits.csv vocabulary does not support inorganic mercury or uranium.
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 |