Other · 2025
Nitrate Nitrite in Pomona - City, Water Dept., CA tap water
Pomona - City, Water Dept., CA's 2025 Consumer Confidence Report shows Nitrate Nitrite at or above the federal limit (10 MG/L MCL). Measured value is 1.1× the threshold.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Other | 0.3433333333333333 MG/L | 10 MG/L MCL |
Highest single sample Other | 0.46 MG/L | 10 MG/L MCL |
Average Entry point | 3.82025641025641 MG/L | 10 MG/L MCL |
Highest single sample Source water | 25 MG/L | 10 MG/L MCL |
Highest single sample Entry point | 14 MG/L | 10 MG/L MCL |
Average Source water | 10.988461538461538 MG/L | 10 MG/L MCL |
Verbatim from Pomona - City, Water Dept., CA's 2025 Consumer Confidence Report — source document ↗
How Pomona - City, Water Dept., CA compares
3 of the 127 systems measuring Nitrate Nitrite on The Water Map have it at or above the federal limit:
Nearby systems also reporting Nitrate Nitrite:
People also ask
+Is there Nitrate Nitrite in Pomona - City, Water Dept., CA tap water?
Yes — Pomona - City, Water Dept., CA's 2025 Consumer Confidence Report lists Nitrate Nitrite at 10.988461538461538 MG/L. Pomona - City, Water Dept., CA's 2025 Consumer Confidence Report shows Nitrate Nitrite at or above the federal limit (10 MG/L MCL). Measured value is 1.1× the threshold.
+What's the federal limit for Nitrate Nitrite in drinking water?
The federal MCL for Nitrate Nitrite is 10 MG/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+Which other U.S. cities have Nitrate Nitrite over the federal limit?
3 of the 127 systems on The Water Map measuring Nitrate Nitrite report it at or above the federal limit. Examples include Pomona - City, Water Dept., CA, Pomona - City, Water Dept., CA, Oxnard, CA.
+Where does this Nitrate Nitrite measurement come from?
This page reproduces the Nitrate Nitrite entry from the 2025 Consumer Confidence Report published by the Pomona - City, Water Dept., 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/pomona-city-water-dept/2025/source.