Radionuclides · 2024
Radon in Portland, OR tap water
Portland, OR's 2024 report shows Radon detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range System-wide | 0–409 pCi/L | None set |
Average System-wide | 152.2 pCi/L | None set |
Verbatim from Portland, OR'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 Portland, OR 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 Portland, OR tap water?
Yes — Portland, OR's 2024 Consumer Confidence Report lists Radon at 152.2 pCi/L. Portland, OR's 2024 report shows Radon detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Radon in drinking water?
The EPA has not set an enforceable federal limit for Radon. Utilities still report any measured levels in their annual Consumer Confidence Report.
+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 Portland, OR 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/or/portland/2024/source.