Radionuclides · 2025
Combined Radium in Rochester, MN tap water
Rochester, MN'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 |
|---|---|---|
Maximum Average or Highest Single Test Result | 4.9 | 0 MCLG |
Range of Detected Test Results | 0–4.9 | 0 MCLG |
Verbatim from Rochester, MN'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 Rochester, MN 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 Rochester, MN tap water?
Yes — Rochester, MN's 2025 Consumer Confidence Report lists Combined Radium at 4.9. Rochester, MN'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 . 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 Rochester, MN 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/mn/rochester/2025/source.