Minds → Water & Wastewater → What are the secondary maximum contaminant levels for chloride and color in drinking water under 40 CFR 143.3? Answer in under 100 words.
US FederalSafe Drinking Water ActWhat are the secondary maximum contaminant levels for chloride and color in drinking water under 40 CFR 143.3? Answer in under 100 words.
Under 40 CFR 143.3, the secondary maximum contaminant level for chloride in drinking water is 250 mg/l, and for color it is 15 color units.
Last verified: 2026-08-26 · Sources checked: 1/1 resolving · Next scheduled review: 2026-11-24
Sources
- [1]U.S. National Archives, Electronic Code of Federal Regulations — 40 CFR 143.3 — Secondary maximum contaminant levels · as of 2026-08-26
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