Radionuclides · 2025
Combined Radium in Catoosa Utility District Authority, TN tap water
Catoosa Utility District Authority, TN's 2025 report shows Combined Radium detected, but the EPA has not set an enforceable federal limit for it.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample System-wide | 1.08 pCi/L | 0 pCi/L MCLG |
Highest single sample System-wide | 1.08 pCi/L | 0 pCi/L MCLG |
Range System-wide | 1.08 pCi/L | 0 pCi/L MCLG |
Range System-wide | 1.08 pCi/L | 0 pCi/L MCLG |
Verbatim from Catoosa Utility District Authority, TN's 2025 Consumer Confidence Report — source document ↗
About Combined Radium
Combined radium-226 and radium-228 — naturally occurring radioactive elements.
Long-term exposure above the federal limit increases the risk of bone cancer.
How Catoosa Utility District Authority, TN compares
5 of the 182 systems measuring Combined Radium on The Water Map have it at or above the federal limit:
Nearby systems also reporting Combined Radium:
People also ask
+Is there Combined Radium in Catoosa Utility District Authority, TN tap water?
Yes — Catoosa Utility District Authority, TN's 2025 Consumer Confidence Report lists Combined Radium at 1.08 pCi/L. Catoosa Utility District Authority, TN's 2025 report shows Combined Radium detected, but the EPA has not set an enforceable federal limit for it.
+What's the federal limit for Combined Radium in drinking water?
The federal MCLG for Combined Radium 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 Combined Radium?
Combined radium-226 and radium-228 — naturally occurring radioactive elements. Long-term exposure above the federal limit increases the risk of bone cancer.
+Which other U.S. cities have Combined Radium over the federal limit?
5 of the 182 systems on The Water Map measuring Combined Radium report it at or above the federal limit. Examples include Pomona, CA, West Covina, CA, Albuquerque, NM.
+Where does this Combined Radium measurement come from?
This page reproduces the Combined Radium entry from the 2025 Consumer Confidence Report published by the Catoosa Utility District Authority, TN 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/tn/catoosa-utility-district-authority/2025/source.