Inorganic chemicals · 2025
Ammonia in City of Fairfield, CA tap water
City of Fairfield, CA's 2025 report shows Ammonia detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Entry point | 0.062 MG/L | None set |
Average Entry point | 0.0235 MG/L | None set |
Verbatim from City of Fairfield, CA's 2025 Consumer Confidence Report — source document ↗
How City of Fairfield, CA compares
Nearby systems also reporting Ammonia:
People also ask
+Is there Ammonia in City of Fairfield, CA tap water?
Yes — City of Fairfield, CA's 2025 Consumer Confidence Report lists Ammonia at 0.0235 MG/L. City of Fairfield, CA's 2025 report shows Ammonia detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Ammonia in drinking water?
The EPA has not set an enforceable federal limit for Ammonia. Utilities still report any measured levels in their annual Consumer Confidence Report.
+Where does this Ammonia measurement come from?
This page reproduces the Ammonia entry from the 2025 Consumer Confidence Report published by the City of Fairfield, 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/fairfield/2025/source.