Metals · 2023
Copper in California Water Service Co. - Dominguez — San Jose, Ca, CA tap water
California Water Service Co. - Dominguez — San Jose, Ca, CA's 2023 Copper measurement is below the federal limit of 1.3 mg/L (Action level).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
90th percentile Distribution System-Wide | 0.307 mg/L | 1.3 mg/L Action level |
Verbatim from California Water Service Co. - Dominguez — San Jose, Ca, 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 California Water Service Co. - Dominguez — San Jose, Ca, CA compares
5 of the 1330 systems measuring Copper on The Water Map have it at or above the federal limit:
Nearby systems also reporting Copper:
People also ask
+Is there Copper in California Water Service Co. - Dominguez — San Jose, Ca, CA tap water?
Yes — California Water Service Co. - Dominguez — San Jose, Ca, CA's 2023 Consumer Confidence Report lists Copper at 0.307 mg/L. California Water Service Co. - Dominguez — San Jose, Ca, CA's 2023 Copper measurement is below the federal limit of 1.3 mg/L (Action level).
+What's the federal limit for Copper in drinking water?
The federal Action level for Copper is 1.3 mg/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.
+Which other U.S. cities have Copper over the federal limit?
5 of the 1330 systems on The Water Map measuring Copper report it at or above the federal limit. Examples include Atascadero State Hospital — Atascadero, Ca, CA, Gramercy, MD, White Fence Farms Mwc No.3 — Lancaster, Ca, CA.
+Where does this Copper measurement come from?
This page reproduces the Copper entry from the 2023 Consumer Confidence Report published by the California Water Service Co. - Dominguez — San Jose, Ca, 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/california-water-service-co-dominguez-san-jose-ca/2023/source.