Inorganic chemicals · 2025
Sulfate in City of Clovis, CA tap water
City of Clovis, CA's 2025 Sulfate measurement is below the federal limit of 500 MG/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Source water | 39 MG/L | 500 MG/L MCL |
Highest single sample Entry point | 1.2 MG/L | 500 MG/L MCL |
Average Source water | 10.760526315789473 MG/L | 500 MG/L MCL |
Average Entry point | 1.2 MG/L | 500 MG/L MCL |
Verbatim from City of Clovis, CA's 2025 Consumer Confidence Report — source document ↗
About Sulfate
A naturally occurring mineral from rock and soil.
No health-based federal limit; high levels can have a laxative effect and a bitter taste.
How City of Clovis, CA compares
5 of the 245 systems measuring Sulfate on The Water Map have it at or above the federal limit:
Nearby systems also reporting Sulfate:
People also ask
+Is there Sulfate in City of Clovis, CA tap water?
Yes — City of Clovis, CA's 2025 Consumer Confidence Report lists Sulfate at 10.760526315789473 MG/L. City of Clovis, CA's 2025 Sulfate measurement is below the federal limit of 500 MG/L (MCL).
+What's the federal limit for Sulfate in drinking water?
The federal MCL for Sulfate is 500 MG/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Sulfate?
A naturally occurring mineral from rock and soil. No health-based federal limit; high levels can have a laxative effect and a bitter taste.
+Which other U.S. cities have Sulfate over the federal limit?
5 of the 245 systems on The Water Map measuring Sulfate report it at or above the federal limit. Examples include Lakewood, CO, Oxnard, CA, Oxnard Water Dept, CA.
+Where does this Sulfate measurement come from?
This page reproduces the Sulfate entry from the 2025 Consumer Confidence Report published by the City of Clovis, 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/clovis/2025/source.