Radium Contamination in Colorado

ZipCheckup analyzed drinking water data across 658 ZIP codes in Colorado for radium contamination. 1 ZIP codes have reported radium detections, and 85 have EPA violations on record.

The violation rate for radium in Colorado is 12.9% of all ZIP codes — higher than the national average.

EPA Standard for Radium

The EPA maximum contaminant level (MCL) for radium is 5 pCi/L (combined Ra-226 + Ra-228), governed by the Radionuclides Rule. Water systems that exceed this limit must take corrective action and notify consumers.

Worst ZIP Codes for Radium in Colorado

These ZIP codes reported the highest radium levels in Colorado based on CCR reports and EPA data:

Lowest Radium Levels in Colorado

These ZIP codes had the lowest reported radium detections in Colorado:

Health Effects of Radium

Radium is a radioactive element that increases cancer risk, particularly bone cancer. It accumulates in bones because the body treats it like calcium. The EPA estimates that drinking water with 5 pCi/L of radium over a lifetime poses a 1 in 10,000 cancer risk.

How to Remove Radium From Drinking Water

The most effective treatment for radium removal is Reverse Osmosis or Ion Exchange. Look for filters certified under NSF 58 standards.

Check Your ZIP Code

Use the ZipCheckup water quality search to see radium data for your specific water system in Colorado.