Disinfection byproducts · 2025
Chloroform in Columbus, OH tap water
Columbus, OH's 2025 report shows Chloroform detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range Dublin Road Water Plant | 1.5–14.8 ug/L | None set |
Reported level Columbus Water | 0.009 | None set |
Range Hap Cremean Water Plant | 10.5–23.5 ug/L | None set |
Average Dublin Road Water Plant | 8.7 ug/L | None set |
Reported level When we checked | 2025 ug/L | None set |
Average Parsons Avenue Water Plant | 2.5 ug/L | None set |
Range Parsons Avenue Water Plant | 1.4–3.7 ug/L | None set |
Average Hap Cremean Water Plant | 16.6 ug/L | None set |
Verbatim from Columbus, OH's 2025 Consumer Confidence Report — source document ↗
About Chloroform
A trihalomethane formed when chlorine reacts with organic matter in water.
A component of regulated total trihalomethanes; long-term exposure is linked to liver and kidney effects.
How Columbus, OH compares
1 of the 56 systems measuring Chloroform on The Water Map have it at or above the federal limit:
Nearby systems also reporting Chloroform:
People also ask
+Is there Chloroform in Columbus, OH tap water?
Yes — Columbus, OH's 2025 Consumer Confidence Report lists Chloroform at 16.6 ug/L. Columbus, OH's 2025 report shows Chloroform detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Chloroform in drinking water?
The EPA has not set an enforceable federal limit for Chloroform. Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is Chloroform?
A trihalomethane formed when chlorine reacts with organic matter in water. A component of regulated total trihalomethanes; long-term exposure is linked to liver and kidney effects.
+Which other U.S. cities have Chloroform over the federal limit?
1 of the 56 systems on The Water Map measuring Chloroform report it at or above the federal limit. Examples include Pomona, CA.
+Where does this Chloroform measurement come from?
This page reproduces the Chloroform 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.