Radiological
Uranium in your water
Is Uranium in drinking water dangerous?
It depends on the level and how long you're exposed. The EPA legal limit (MCL) for Uranium is 30 ppb. The EPA also sets a non-enforceable health goal (MCLG) of 0 ppb. Meeting the legal limit isn't the same as zero risk — test your water to know your level.
How do you remove Uranium from water?
Uranium is treated by Water Softener and Reverse Osmosis. Choose a system independently certified to NSF/ANSI standards to reduce Uranium, and test your water first to confirm the level.
Source: EPA MCL / MCLG; WHO guidelines; NSF/ANSI · 2026
Health effects
Uranium occurs naturally in rock and dissolves into groundwater, with extra contributions from mining in some regions. It is both a radioactive and a toxic metal; long-term exposure mainly damages the kidneys and increases cancer risk. It is widespread in Western groundwater.
The health-based goal vs. the legal limit
The federal legal limit (MCL) is the maximum allowed by law. The EPA health goal (MCLG) is the level below which no health risk is expected — it is non-enforceable and often stricter than the legal limit.
EPA health goal (MCLG)
0 ppb
Federal legal limit (MCL)
30 ppb
Source: EPA National Primary Drinking Water Regulations (MCL / MCLG) · 2026
What removes Uranium
Ion exchange
Water Softener
Swaps the calcium and magnesium that cause hard water for sodium — so scale stops forming.
Look for: NSF/ANSI 44 certification
How it works→Semipermeable membrane filtration
Reverse Osmosis
Pushes water through a fine membrane that removes the dissolved solids most filters miss.
Look for: NSF/ANSI 58 certification
How it works→Where Uranium has been found
Uranium shows up in the public water record for these cities. Each page has the measured level, the legal limit, and what removes it.
- 1
See your Water Score
Free, instant, no signup.
- 2
Get your custom fix-it plan
Exactly what your water needs.
- 3
Request your free water test
Availability varies by location; no obligation to buy.
Is Uranium in your water?
Check your city's public record, then book a free 30-minute test to confirm what's in your home.