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Iron County · Utah · EPA SDWIS 2026Q2

Radium (combined -226 & -228) in Cedar City water

Radium (combined -226 & -228) measured above the federal limit in Cedar City's public supply.

Radium (combined -226 & -228)

Violation on record

Health-based: yes
Measured in your water28 pCi/L
Federal legal limit (MCL)5 pCi/L

19 EPA records on file (most recent 2025). Radium is a naturally radioactive element that leaches from rock into groundwater. Long-term exposure increases the risk of bone cancer and other cancers because it concentrates in bone. The federal limit covers the combined activity of radium-226 and radium-228.

Source: EPA SDWIS · 2026Q2

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)

0.05 pCi/L

Federal legal limit (MCL)

5 pCi/L

Source: EPA MCL / MCLG; WHO guidelines · 2026

What removes Radium (combined -226 & -228)

ROion-exchange

Advertising disclosure

The Very Good Water Company is an authorized WaterTech dealer and earns revenue from installations and lead referrals.

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