Metals · 2023
Copper in Western Hills Water District/diablo Gran, CA tap water
Western Hills Water District/diablo Gran, CA's 2023 Copper measurement is below the federal limit of 1300 ug/L (Action level).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level No. of Samples Collected | 20 ug/L | 1300 ug/L Action level |
90th percentile At the tap | 0.085 mg/L | 1.3 mg/L Action level |
Range At the tap | 0–0.16 mg/L | 1.3 mg/L Action level |
Verbatim from Western Hills Water District/diablo Gran, CA's 2023 Consumer Confidence Report — source document ↗
About Copper
A metal that enters water from corroding household plumbing.
Short-term exposure causes stomach distress; long-term exposure can damage the liver and kidneys.
How Western Hills Water District/diablo Gran, CA compares
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People also ask
+Is there Copper in Western Hills Water District/diablo Gran, CA tap water?
Yes — Western Hills Water District/diablo Gran, CA's 2023 Consumer Confidence Report lists Copper at 0.085 mg/L. Western Hills Water District/diablo Gran, CA's 2023 Copper measurement is below the federal limit of 1300 ug/L (Action level).
+What's the federal limit for Copper in drinking water?
The federal Action level for Copper is 1300 ug/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Copper?
A metal that enters water from corroding household plumbing. Short-term exposure causes stomach distress; long-term exposure can damage the liver and kidneys.
+Where does this Copper measurement come from?
This page reproduces the Copper entry from the 2023 Consumer Confidence Report published by the Western Hills Water District/diablo Gran, 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/western-hills-water-district-diablo-gran/2023/source.