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Groundwater Contamination: Uranium


Detecting and Treating Uranium in Water

Uranium is a radioactive substance that occurs naturally in Wisconsin and is detected as a contaminant in some drinking water supplies here. Health risks come from long-term exposure.

What is it?

Uranium is a naturally occurring radioactive metal found in rocks, soil, and water. Uranium contamination in drinking water can occur when the metal leaches into groundwater, particularly in areas with specific geological formations.

Where does it come from?

Uranium enters drinking water primarily through the weathering of rocks and minerals containing uranium. It can leach into groundwater and contaminate water sources. Human activities such as mining and industrial discharges can also contribute to elevated uranium levels.

Is uranium a health hazard?

Yes, uranium is considered a health hazard due to its radioactive nature. Prolonged exposure to elevated levels of uranium in drinking water has been associated with potential kidney damage and an increased risk of cancer. The Environmental Protection Agency(EPA) has established Maximum Contaminant Levels (MCLs) for uranium in drinking water to protect public health.

When should I test?

Testing for uranium is recommended, especially if you live in areas with known geological formations that may contribute to uranium contamination. Regular testing, particularly for those relying on private wells, helps monitor uranium levels and ensures early detection of contamination.

If my water tests positive, what should I do next?

If your water tests positive for elevated uranium levels, consider the following actions:

Limit exposure: Avoid using water for drinking or cooking until the issue is addressed. Seek alternative water sources to minimize exposure to uranium.

Contact U.S. Water: Our exclusive Uranium Shield can treat your water at the point of entry or you may consider a point-of-use system, such as reverse osmosis.

Regularly monitor water quality: Periodically test your water for uranium and stay vigilant for any changes in water quality. Regular monitoring helps ensure ongoing water safety.

Stay informed: Keep abreast of local water quality regulations and guidelines. Regularly check for advisories or recommendations from relevant health and environmental authorities.

Taking proactive steps and staying informed about uranium contamination in your drinking water is essential for safeguarding your health and maintaining water quality.


Uranium Shieldis the cutting-edge treatment technology from U.S. Water that will stop uranium before it ever enters your home’s water system. Unlike “under-the-sink” systems, Uranium Shield is a robust “whole home” system that works together with your water softening system to remove uranium system-wide. LEARN MORE

map of Wisconsin showing areas of highest concentration of uranium in ground water
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Uranium Shield

Block uranium from entering your home’s water with Uranium Shield exclusively from U.S. Water.



Although your groundwater quality may change, you will always enjoy a clean, refreshing water supply courtesy of our highly efficientQuick Change Reverse Osmosis Water System.

The Right Solution Starts with an Accurate Test

U.S. Water offers comprehensive well water testing services through itsWisconsin state-certified water testing lab. This ensures the most accurate testing and, with our test facility onsite, you are guaranteed a fast turnaround time. In addition to our basic analysis, we offer a full range of certified water tests and well inspection services.

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