June 17, 2026
Radiologicals in California Drinking Water 2026
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Radiologicals in California Drinking Water 2026
Radiologicals contamination has been detected in drinking water systems across California. Radium and radon are naturally occurring radioactive elements linked to bone and lung cancer. Our analysis of California water quality reports found Radiologicals present in 18 cities and water systems statewide. If you live in one of these communities, a certified home filter can significantly reduce your exposure -- browse Radiologicals filters at PureWaterGuys.
Cities in California with Radiologicals Detected
The following 18 water systems in California reported Radiologicals in their annual water quality reports. Click any city to read the full report.
| City / Water System | Water Quality Report |
|---|---|
| Campo Ca Water Quality Report 2026 | View Report |
| Ceres Ca Water Quality Report 2026 | View Report |
| Daggett Ca Water Quality Report 2026 | View Report |
| Encino Ca Water Quality Report 2026 | View Report |
| Fawnskin Ca Water Quality Report 2026 | View Report |
| Green Valley Lake Ca Water Quality Report 2026 | View Report |
| Guatay Ca Water Quality Report 2026 | View Report |
| Jamul Ca Water Quality Report 2026 | View Report |
| Lathrop Ca Water Quality Report 2026 | View Report |
| Lebec Ca Water Quality Report 2026 | View Report |
| Ludlow Ca Water Quality Report 2026 | View Report |
| North Fork Ca Water Quality Report 2026 | View Report |
| Pine Valley Ca Water Quality Report 2026 | View Report |
| Romoland Ca Water Quality Report 2026 | View Report |
| Stateline Ca Water Quality Report 2026 | View Report |
| Twin Peaks Ca Water Quality Report 2026 | View Report |
| Weldon Ca Water Quality Report 2026 | View Report |
| Wishon Ca Water Quality Report 2026 | View Report |
What Does This Mean For You?
Detecting Radiologicals in your water supply does not necessarily mean immediate danger, but long-term exposure -- even at low levels -- carries measurable health risk. Reverse osmosis removes radium and uranium effectively. Aeration or activated carbon addresses radon.
Our recommendation: View Radiologicals filters certified for California water conditions or take our free Water Finder Quiz to get a personalized recommendation.
Filter Radiologicals From Your California Tap Water
PureWaterGuys carries NSF-certified filters proven to reduce Radiologicals and other contaminants found in California water.
Shop Radiologicals Filters Take the Water QuizFrequently Asked Questions
What is Radiologicals?
Radium and radon are naturally occurring radioactive elements linked to bone and lung cancer.
Is California tap water safe to drink?
Water quality varies by city. Of the California systems we analyzed, 18 detected Radiologicals. Most levels are below EPA action thresholds, but long-term low-level exposure carries health risk. Check your city's report above or use a certified home filter as a precaution.
What filter removes Radiologicals from tap water?
Reverse osmosis removes radium and uranium effectively. Aeration or activated carbon addresses radon. See our Radiologicals filter options.
Data sourced from EPA-mandated annual water quality reports (Consumer Confidence Reports). Last updated: 2026. Not all systems are required to test for every contaminant.