Radionuclides · 2024
Radon in New Haven, CT tap water
New Haven, CT's 2024 Radon measurement is below the federal limit of 5000 pCi/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level Average Level and Range Detected During 2024 | 0–1856 pCi/L | 5000 pCi/L MCL |
Verbatim from New Haven, CT's 2024 Consumer Confidence Report — source document ↗
About Radon
A naturally occurring radioactive gas that can dissolve into groundwater.
No enforceable federal limit in drinking water yet; inhalation of released radon raises lung-cancer risk.
How New Haven, CT compares
1 of the 29 systems measuring Radon on The Water Map have it at or above the federal limit:
Nearby systems also reporting Radon:
People also ask
+Is there Radon in New Haven, CT tap water?
Yes — New Haven, CT's 2024 Consumer Confidence Report lists Radon at 0–1856 pCi/L. New Haven, CT's 2024 Radon measurement is below the federal limit of 5000 pCi/L (MCL).
+What's the federal limit for Radon in drinking water?
The federal MCL for Radon is 5000 pCi/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Radon?
A naturally occurring radioactive gas that can dissolve into groundwater. No enforceable federal limit in drinking water yet; inhalation of released radon raises lung-cancer risk.
+Which other U.S. cities have Radon over the federal limit?
1 of the 29 systems on The Water Map measuring Radon report it at or above the federal limit. Examples include Santa Rosa, CA.
+Where does this Radon measurement come from?
This page reproduces the Radon entry from the 2024 Consumer Confidence Report published by the New Haven, CT 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/ct/new-haven/2024/source.