Haloacetic Acids (HAA5)
Disinfection ByproductNo safe level (MCLG 0)MCL60.0 µg/L
MCLG0.0 µg/L
Legal limit and health goal
MCL — Maximum Contaminant Level
The enforceable legal limit. Public water systems must keep levels at or below this number. Violation triggers a public notice requirement.
60.0 µg/LMCLG — Maximum Contaminant Level Goal
The non-enforceable health goal set by the EPA. For known or probable carcinogens the MCLG is zero — no level of exposure is considered without risk.
0.0 µg/LRepresentative sample reading
Illustrative value at approximately 50% of MCL
Haloacetic Acids (HAA5)Disinfection Byproduct
30.0µg/L
| Contaminant | Measured value | MCL | Status |
|---|---|---|---|
| Haloacetic Acids (HAA5) | 30.0 µg/L | 60.0 µg/L | Approaching limit |
Health effects
Increased cancer risk with long-term exposure; disinfection byproduct of chlorination.
Filters verified to reduce Haloacetic Acids (HAA5)
No filter in our registry currently holds an independent NSF/ANSI health certification for this contaminant.
Browse the full filter registry →Utilities currently reporting exceedances
No utilities in our current coverage are reporting an exceedance for this contaminant.