Disinfection byproducts · 2024
HAA5 in Worcester, MA tap water
Worcester, MA's 2024 HAA5 level is between 80% and 100% of the federal limit (60 ug/L MCL) — measured but not in violation.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample System-wide | 41 ug/L | 60 ug/L MCL |
Range System-wide | 16–51 ug/L | 60 ug/L MCL |
Verbatim from Worcester, MA'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 Worcester, MA compares
5 of the 1145 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 Worcester, MA tap water?
Yes — Worcester, MA's 2024 Consumer Confidence Report lists HAA5 at 16–51 ug/L. Worcester, MA's 2024 HAA5 level is between 80% and 100% of the federal limit (60 ug/L MCL) — measured but not in violation.
+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 1145 systems on The Water Map measuring HAA5 report it at or above the federal limit. Examples include City of Roseville — Roseville, Ca, CA, Tejon Castac Wd - I5 & Laval Rd — Lebec, Ca, CA, Helendale Community Service District — Helendale, Ca, CA.
+Where does this HAA5 measurement come from?
This page reproduces the HAA5 entry from the 2024 Consumer Confidence Report published by the Worcester, MA 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/ma/worcester/2024/source.