Disinfection byproducts · 2023
Bromate in Contra Costa Water District, CA tap water
Contra Costa Water District, CA's 2023 Bromate measurement is below the federal limit of 10 UG/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Entry point | 6.4 UG/L | 10 UG/L MCL |
Average Entry point | 3.057142857142857 UG/L | 10 UG/L MCL |
Verbatim from Contra Costa Water District, CA's 2023 Consumer Confidence Report — source document ↗
About Bromate
A disinfection byproduct formed when bromide-containing water is treated with ozone.
Classified as a probable human carcinogen; the EPA sets a strict maximum contaminant level.
How Contra Costa Water District, CA compares
5 of the 107 systems measuring Bromate on The Water Map have it at or above the federal limit:
Nearby systems also reporting Bromate:
People also ask
+Is there Bromate in Contra Costa Water District, CA tap water?
Yes — Contra Costa Water District, CA's 2023 Consumer Confidence Report lists Bromate at 3.057142857142857 UG/L. Contra Costa Water District, CA's 2023 Bromate measurement is below the federal limit of 10 UG/L (MCL).
+What's the federal limit for Bromate in drinking water?
The federal MCL for Bromate is 10 UG/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Bromate?
A disinfection byproduct formed when bromide-containing water is treated with ozone. Classified as a probable human carcinogen; the EPA sets a strict maximum contaminant level.
+Which other U.S. cities have Bromate over the federal limit?
5 of the 107 systems on The Water Map measuring Bromate report it at or above the federal limit. Examples include Columbus, OH, City of Hemet, CA, City of Murrieta, CA.
+Where does this Bromate measurement come from?
This page reproduces the Bromate entry from the 2023 Consumer Confidence Report published by the Contra Costa Water District, 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/contra-costa-water-district/2023/source.