Yuma County · Arizona · EPA SDWIS 2026Q2
Uranium in Yuma water
Uranium measured above the federal limit in Yuma's public supply.
Uranium
Violation on record
72 EPA records on file (most recent 2025). 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.
EPA records reflect the public water system, not your home's plumbing. Health-based goals (EPA MCLG / WHO) are health targets and are often stricter than the federal legal limit (the MCL). A utility appearing on this list does not by itself mean the water is unsafe to drink. The only way to know what is in your specific home is to test your own water.
The health-based goal vs. the legal limit
The federal legal limit (MCL) is the maximum allowed by law. The health-based goal (EPA MCLG / WHO) is a stricter health target — not itself a legal limit.
Health-based goal (EPA MCLG / WHO)
0.43 ppb
Federal legal limit (MCL)
30 ppb
Source: EPA MCL / MCLG; WHO guidelines · 2026
What removes Uranium
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