Inorganic chemicals · 2025
Nitrate in Columbus, OH tap water
Columbus, OH's 2025 Consumer Confidence Report shows Nitrate at or above the federal limit (10 mg/L MCL). Measured value is 202.5× the threshold.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range Hap Cremean Water Plant | 0–1.4 mg/L | 10 mg/L MCL |
Reported level Hap Cremean Water Plant | 1.4 mg/L | 10 mg/L MCL |
Reported level When we checked | 2025 mg/L | 10 mg/L MCL |
Reported level Parsons Avenue Water Plant | Not detected mg/L | 10 mg/L MCL |
Range Parsons Avenue Water Plant | Not detected mg/L | 10 mg/L MCL |
Range Dublin Road Water Plant | 0–6.3 mg/L | 10 mg/L MCL |
Reported level Columbus Water | 1.3 | 10 MCL |
Reported level Dublin Road Water Plant | 6.3 mg/L | 10 mg/L MCL |
Verbatim from Columbus, OH's 2025 Consumer Confidence Report — source document ↗
About Nitrate
A compound from fertilizer runoff, septic systems, and erosion of natural deposits.
Levels above the federal limit can cause 'blue baby syndrome,' a serious oxygen-transport condition in infants.
How Columbus, OH compares
5 of the 318 systems measuring Nitrate on The Water Map have it at or above the federal limit:
Nearby systems also reporting Nitrate:
People also ask
+Is there Nitrate in Columbus, OH tap water?
Yes — Columbus, OH's 2025 Consumer Confidence Report lists Nitrate at 2025 mg/L. Columbus, OH's 2025 Consumer Confidence Report shows Nitrate at or above the federal limit (10 mg/L MCL). Measured value is 202.5× the threshold.
+What's the federal limit for Nitrate in drinking water?
The federal MCL for Nitrate is 10 mg/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Nitrate?
A compound from fertilizer runoff, septic systems, and erosion of natural deposits. Levels above the federal limit can cause 'blue baby syndrome,' a serious oxygen-transport condition in infants.
+Which other U.S. cities have Nitrate over the federal limit?
5 of the 318 systems on The Water Map measuring Nitrate report it at or above the federal limit. Examples include Hollywood, FL, Mcallen, TX, Lakewood, CO.
+Where does this Nitrate measurement come from?
This page reproduces the Nitrate 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.