Metals · 2024
Calcium in Contra Costa Water District, CA tap water
Contra Costa Water District, CA's 2024 report shows Calcium detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Distribution | 11 MG/L | None set |
Highest single sample Distribution | 17 MG/L | None set |
Highest single sample Source water | 33 MG/L | None set |
Average Source water | 10.7 MG/L | None set |
Average Entry point | 10 MG/L | None set |
Highest single sample Entry point | 19 MG/L | None set |
Verbatim from Contra Costa Water District, CA's 2024 Consumer Confidence Report — source document ↗
About Calcium
A naturally occurring mineral that contributes to water hardness.
Not federally regulated for health; affects scaling and taste.
How Contra Costa Water District, CA compares
1 of the 214 systems measuring Calcium on The Water Map have it at or above the federal limit:
Nearby systems also reporting Calcium:
People also ask
+Is there Calcium in Contra Costa Water District, CA tap water?
Yes — Contra Costa Water District, CA's 2024 Consumer Confidence Report lists Calcium at 11 MG/L. Contra Costa Water District, CA's 2024 report shows Calcium detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Calcium in drinking water?
The EPA has not set an enforceable federal limit for Calcium. Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is Calcium?
A naturally occurring mineral that contributes to water hardness. Not federally regulated for health; affects scaling and taste.
+Which other U.S. cities have Calcium over the federal limit?
1 of the 214 systems on The Water Map measuring Calcium report it at or above the federal limit. Examples include Vancouver, WA.
+Where does this Calcium measurement come from?
This page reproduces the Calcium entry from the 2024 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/2024/source.