Physical & aggregate · 2026
Turbidity in City of Fairfield, CA tap water
City of Fairfield, CA's 2026 Consumer Confidence Report shows Turbidity at or above the federal limit (5 NTU MCL). Measured value is 3.5× the threshold.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Source water | 17.313333333333336 NTU | 5 NTU MCL |
Highest single sample Source water | 33.7 NTU | 5 NTU MCL |
Average Entry point | 0.0325 NTU | 5 NTU MCL |
Highest single sample Entry point | 0.033 NTU | 5 NTU MCL |
Verbatim from City of Fairfield, CA's 2026 Consumer Confidence Report — source document ↗
About Turbidity
A measure of cloudiness from suspended particles in the water.
High turbidity can shelter microbes from disinfection; the EPA enforces it through a treatment-technique standard.
How City of Fairfield, CA compares
5 of the 307 systems measuring Turbidity on The Water Map have it at or above the federal limit:
Nearby systems also reporting Turbidity:
People also ask
+Is there Turbidity in City of Fairfield, CA tap water?
Yes — City of Fairfield, CA's 2026 Consumer Confidence Report lists Turbidity at 17.313333333333336 NTU. City of Fairfield, CA's 2026 Consumer Confidence Report shows Turbidity at or above the federal limit (5 NTU MCL). Measured value is 3.5× the threshold.
+What's the federal limit for Turbidity in drinking water?
The federal MCL for Turbidity is 5 NTU. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Turbidity?
A measure of cloudiness from suspended particles in the water. High turbidity can shelter microbes from disinfection; the EPA enforces it through a treatment-technique standard.
+Which other U.S. cities have Turbidity over the federal limit?
5 of the 307 systems on The Water Map measuring Turbidity report it at or above the federal limit. Examples include Birmingham, AL, Albuquerque, NM, City of Vallejo, CA.
+Where does this Turbidity measurement come from?
This page reproduces the Turbidity entry from the 2026 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/2026/source.