Radionuclides · 2026
Combined Radium in Pomona - City, Water Dept., CA tap water
Pomona - City, Water Dept., CA's 2026 Consumer Confidence Report tested for Combined Radium and reported no detectable amount.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Source water | Not detected PCI/L | 5 PCI/L MCL |
Verbatim from Pomona - City, Water Dept., CA's 2026 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 Pomona - City, Water Dept., CA compares
5 of the 252 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 Pomona - City, Water Dept., CA tap water?
Pomona - City, Water Dept., CA's 2026 Consumer Confidence Report tested for Combined Radium and found no detectable amount.
+What's the federal limit for Combined Radium in drinking water?
The federal MCL for Combined Radium is 5 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 252 systems on The Water Map measuring Combined Radium report it at or above the federal limit. Examples include West Covina, CA, Albuquerque, NM, City of Baltimore, MD.
+Where does this Combined Radium measurement come from?
This page reproduces the Combined Radium entry from the 2026 Consumer Confidence Report published by the Pomona - City, Water Dept., CA 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/ca/pomona-city-water-dept/2026/source.