Yes — Joliet, IL's 2024 Consumer Confidence Report lists Combined Radium at 3.92 pCi/L. Joliet, IL's 2024 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 2024 Consumer Confidence Report published by the Joliet, IL 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/il/joliet/2024/source.

Full report

All Joliet, IL water-quality data →

Every contaminant measured in the 2024 report.

Contaminant pillar

Combined Radium across the U.S. →

Every public water system measuring Combined Radium, ranked.