Radionuclides · 2024
Gross Alpha in Piedmont, CA tap water
Piedmont, CA's 2024 report shows Gross Alpha detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level Sobrante | Not detected pCi/L | 0 pCi/L Public health goal |
Reported level USL | 3.1 pCi/L | 0 pCi/L Public health goal |
Average EBMUD Results WATER TREATMENT PLANTS Individual Sample Results* Walnut Creek Lafayette Orinda Sobrante USL | 3.1 pCi/L | 0 pCi/L Public health goal |
Reported level Orinda | Not detected pCi/L | 0 pCi/L Public health goal |
Average System-wide | Not detected pCi/L | 0 pCi/L Public health goal |
Reported level Lafayette | Not detected pCi/L | 0 pCi/L Public health goal |
Reported level Walnut Creek | Not detected pCi/L | 0 pCi/L Public health goal |
Verbatim from Piedmont, CA's 2024 Consumer Confidence Report — source document ↗
About Gross Alpha
Gross alpha particle activity — a combined measure of alpha-emitting radioactive substances.
Long-term exposure above the federal limit increases cancer risk.
How Piedmont, CA compares
4 of the 186 systems measuring Gross Alpha on The Water Map have it at or above the federal limit:
Nearby systems also reporting Gross Alpha:
People also ask
+Is there Gross Alpha in Piedmont, CA tap water?
Yes — Piedmont, CA's 2024 Consumer Confidence Report lists Gross Alpha at 3.1 pCi/L. Piedmont, CA's 2024 report shows Gross Alpha detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Gross Alpha in drinking water?
The federal Public health goal for Gross Alpha is 0 pCi/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Gross Alpha?
Gross alpha particle activity — a combined measure of alpha-emitting radioactive substances. Long-term exposure above the federal limit increases cancer risk.
+Which other U.S. cities have Gross Alpha over the federal limit?
4 of the 186 systems on The Water Map measuring Gross Alpha report it at or above the federal limit. Examples include Pomona, CA, Birmingham, AL, Burbank, CA.
+Where does this Gross Alpha measurement come from?
This page reproduces the Gross Alpha entry from the 2024 Consumer Confidence Report published by the Piedmont, 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/piedmont/2024/source.