Disinfection byproducts · 2025
Bromate in Columbus, OH tap water
Columbus, OH's 2025 Consumer Confidence Report shows Bromate at or above the federal limit (0.01 MCL). Measured value is 202.5× the threshold.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level Columbus Water | 0.001 | 0.01 MCL |
Reported level Dublin Road Water Plant | 2 ug/L | 10 ug/L MCL |
Range Hap Cremean Water Plant | Not detected ug/L | 10 ug/L MCL |
Reported level When we checked | 2025 ug/L | 10 ug/L MCL |
Range Dublin Road Water Plant | 0–13 ug/L | 10 ug/L MCL |
Reported level Hap Cremean Water Plant | Not detected ug/L | 10 ug/L MCL |
Verbatim from Columbus, OH's 2025 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 Columbus, OH compares
5 of the 132 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 Columbus, OH tap water?
Yes — Columbus, OH's 2025 Consumer Confidence Report lists Bromate at 2025 ug/L. Columbus, OH's 2025 Consumer Confidence Report shows Bromate at or above the federal limit (0.01 MCL). Measured value is 202.5× the threshold.
+What's the federal limit for Bromate in drinking water?
The federal MCL for Bromate is 0.01 . 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 132 systems on The Water Map measuring Bromate report it at or above the federal limit. Examples include City of Hemet, CA, City of Menifee, CA, City of Murrieta, CA.
+Where does this Bromate measurement come from?
This page reproduces the Bromate entry from the 2025 Consumer Confidence Report published by the Columbus, OH 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/oh/columbus/2025/source.