Disinfection byproducts · 2024
HAA5 in Ontario Municipal Utilities Company, CA tap water
Ontario Municipal Utilities Company, CA's 2024 HAA5 measurement is below the federal limit of 60 UG/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Distribution | 19 UG/L | 60 UG/L MCL |
Average Distribution | 7.359375 UG/L | 60 UG/L MCL |
Verbatim from Ontario Municipal Utilities Company, CA's 2024 Consumer Confidence Report — source document ↗
About HAA5
Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter.
Long-term exposure above the federal limit is associated with an increased cancer risk.
How Ontario Municipal Utilities Company, CA compares
5 of the 348 systems measuring HAA5 on The Water Map have it at or above the federal limit:
Nearby systems also reporting HAA5:
People also ask
+Is there HAA5 in Ontario Municipal Utilities Company, CA tap water?
Yes — Ontario Municipal Utilities Company, CA's 2024 Consumer Confidence Report lists HAA5 at 7.359375 UG/L. Ontario Municipal Utilities Company, CA's 2024 HAA5 measurement is below the federal limit of 60 UG/L (MCL).
+What's the federal limit for HAA5 in drinking water?
The federal MCL for HAA5 is 60 UG/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is HAA5?
Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. Long-term exposure above the federal limit is associated with an increased cancer risk.
+Which other U.S. cities have HAA5 over the federal limit?
5 of the 348 systems on The Water Map measuring HAA5 report it at or above the federal limit. Examples include Albuquerque, NM, City of Hialeah, FL, City of North Miami Beach, FL.
+Where does this HAA5 measurement come from?
This page reproduces the HAA5 entry from the 2024 Consumer Confidence Report published by the Ontario Municipal Utilities Company, CA water utility — the annual drinking-water report every U.S. utility is required by federal law to publish. The original source document is archived at /water/ca/ontario-municipal-utilities-company/2024/source.