EPA’s 2018 Drinking Water Standards and Health Advisories table compiles federal drinking-water benchmarks, including enforceable MCLs for regulated contaminants and non-enforceable health advisories. For this ingest, only numeric MCL rows that fit the controlled metal-species vocabulary are loaded into data/evidence/regulatory_limits.csv: antimony, arsenic, cadmium, and total chromium. Lead is gap-logged because the table gives a treatment technique rather than a numeric MCL. Inorganic mercury and uranium are also gap-logged because they do not fit the current CSV species vocabulary, and aluminium is gap-logged because the secondary drinking-water value is a range.
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 |