Radionuclides · 2025
Combined Radium in Rochester, MN tap water
Rochester, MN's 2025 Combined Radium level is between 80% and 100% of the federal limit (0 pCi/L MCLG) — measured but not in violation.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Maximum Average or Highest Single Test Result | 4.9 pCi/L | 0 pCi/L MCLG |
Range of Detected Test Results | 0–4.9 pCi/L | 0 pCi/L 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.
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 pCi/L. Rochester, MN's 2025 Combined Radium level is between 80% and 100% of the federal limit (0 pCi/L MCLG) — measured but not in violation.
+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.
+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.