Disinfection byproducts · 2024
HAA5 in Madison, WI tap water
Madison, WI's 2024 HAA5 measurement is below the federal limit of 60 ug/L (MCLG).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range System-wide | 0.7–2.3 ug/L | 60 ug/L MCLG |
Average Median Level Found | 1.5 ug/L | 60 ug/L MCLG |
Verbatim from Madison, WI'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 Madison, WI compares
5 of the 377 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 Madison, WI tap water?
Yes — Madison, WI's 2024 Consumer Confidence Report lists HAA5 at 1.5 ug/L. Madison, WI's 2024 HAA5 measurement is below the federal limit of 60 ug/L (MCLG).
+What's the federal limit for HAA5 in drinking water?
The federal MCLG 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 377 systems on The Water Map measuring HAA5 report it at or above the federal limit. Examples include Albuquerque, NM, Columbus, OH, Hollywood, FL.
+Where does this HAA5 measurement come from?
This page reproduces the HAA5 entry from the 2024 Consumer Confidence Report published by the Madison, WI 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/wi/madison/2024/source.