Other · 2026
Chromium in Contra Costa Water District, CA tap water
Contra Costa Water District, CA's 2026 Consumer Confidence Report tested for Chromium and reported no detectable amount.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Source water | Not detected UG/L | 50 UG/L MCL |
Verbatim from Contra Costa Water District, CA's 2026 Consumer Confidence Report — source document ↗
How Contra Costa Water District, CA compares
2 of the 169 systems measuring Chromium on The Water Map have it at or above the federal limit:
Nearby systems also reporting Chromium:
People also ask
+Is there Chromium in Contra Costa Water District, CA tap water?
Contra Costa Water District, CA's 2026 Consumer Confidence Report tested for Chromium and found no detectable amount.
+What's the federal limit for Chromium in drinking water?
The federal MCL for Chromium is 50 UG/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 Chromium over the federal limit?
2 of the 169 systems on The Water Map measuring Chromium report it at or above the federal limit. Examples include Glendale-city, Water Dept., CA, Glendale-city, Water Dept., CA.
+Where does this Chromium measurement come from?
This page reproduces the Chromium entry from the 2026 Consumer Confidence Report published by the Contra Costa Water District, 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/contra-costa-water-district/2026/source.