Metals · 2026
Sodium in Contra Costa Water District, CA tap water
Contra Costa Water District, CA's 2026 report shows Sodium detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Source water | 24.2 MG/L | None set |
Highest single sample Source water | 24.2 MG/L | None set |
Average Entry point | 50.65 MG/L | None set |
Highest single sample Entry point | 57.7 MG/L | None set |
Verbatim from Contra Costa Water District, CA's 2026 Consumer Confidence Report — source document ↗
About Sodium
A naturally occurring salt component.
Not federally regulated for health; relevant for people on sodium-restricted diets.
How Contra Costa Water District, CA compares
4 of the 299 systems measuring Sodium on The Water Map have it at or above the federal limit:
Nearby systems also reporting Sodium:
People also ask
+Is there Sodium in Contra Costa Water District, CA tap water?
Yes — Contra Costa Water District, CA's 2026 Consumer Confidence Report lists Sodium at 50.65 MG/L. Contra Costa Water District, CA's 2026 report shows Sodium detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Sodium in drinking water?
The EPA has not set an enforceable federal limit for Sodium. Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is Sodium?
A naturally occurring salt component. Not federally regulated for health; relevant for people on sodium-restricted diets.
+Which other U.S. cities have Sodium over the federal limit?
4 of the 299 systems on The Water Map measuring Sodium report it at or above the federal limit. Examples include Hollywood, FL, Cambridge, MA, Lynn, MA.
+Where does this Sodium measurement come from?
This page reproduces the Sodium 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.