Disinfection byproducts · 2023
HAA5 in Philadelphia, PA tap water
Philadelphia, PA's 2023 HAA5 measurement is below the federal limit of 60 ug/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Running annual avg Running Annual Average 2024 | 43 ug/L | 60 ug/L MCL |
Range System-Wide | 16–52 ug/L | 60 ug/L MCL |
Verbatim from Philadelphia, PA's 2023 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.
People also ask
+Is there HAA5 in Philadelphia, PA tap water?
Yes — Philadelphia, PA's 2023 Consumer Confidence Report lists HAA5 at 43 ug/L. Philadelphia, PA's 2023 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.
+Where does this HAA5 measurement come from?
This page reproduces the HAA5 entry from the 2023 Consumer Confidence Report published by the Philadelphia, PA 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/pa/philadelphia/2023/source.