Radionuclides · 2024
Gross Alpha in Chapel Hill Water System, MD tap water
Chapel Hill Water System, MD's 2024 Gross Alpha measurement is below the federal limit of 15 pCi/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample System-wide | 2.4 pCi/L | 15 pCi/L MCL |
Range System-wide | 2.4 pCi/L | 15 pCi/L MCL |
Verbatim from Chapel Hill Water System, MD'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 Chapel Hill Water System, MD 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 Chapel Hill Water System, MD tap water?
Yes — Chapel Hill Water System, MD's 2024 Consumer Confidence Report lists Gross Alpha at 2.4 pCi/L. Chapel Hill Water System, MD's 2024 Gross Alpha measurement is below the federal limit of 15 pCi/L (MCL).
+What's the federal limit for Gross Alpha in drinking water?
The federal MCL for Gross Alpha is 15 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 Chapel Hill Water System, MD 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/md/chapel-hill/2024/source.