Radionuclides · 2024
Gross Alpha in St George, UT tap water
St George, UT'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 Washington County Water Conservancy District Sources Quail Creek WTP | 1 pCi/L | 0 pCi/L MCLG |
Range City of St. George Groundwater Sources | 0–7.3 pCi/L | 0 pCi/L MCLG |
Reported level Washington County Water Conservancy District Sources Sand Hollow Wells | 7 pCi/L | 0 pCi/L MCLG |
Verbatim from St George, UT'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 St George, UT 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 St George, UT tap water?
Yes — St George, UT's 2024 Consumer Confidence Report lists Gross Alpha at 0–7.3 pCi/L. St George, UT'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 MCLG 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 St George, UT 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/ut/st-george/2024/source.