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Emery County · Utah · EPA SDWIS 2026Q2

Green River Water Quality

0Good

1 water-quality finding on record in the public supply.

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Is Green River tap water safe to drink?

Green River's public water is regulated to meet EPA legal limits. The EPA SDWIS record shows 1 contaminant on file, led by Total Trihalomethanes (TTHM). Local water is very hard. But meeting legal limits isn't the same as zero-risk. Our Water Score rates it 84/100. See the breakdown below, or pull a free water report to learn what's actually coming out of your tap.

Source: EPA SDWIS · 2026Q2

What's really in Green River's water

Total Trihalomethanes (TTHM)

Violation on record

Health-based: yes
Measured in your water102.2 ppb
Federal legal limit (MCL)80 ppb

3 EPA records on file (most recent 2019). TTHM form when chlorine used to disinfect water reacts with natural organic matter. Long-term exposure has been linked to increased cancer risk and to harm in pregnancy. Levels often rise in warmer months and in systems with more organic material.

Source: EPA SDWIS · 2026Q2

Water hardness

very hard

Green River's water is very hard. Hardness isn't a health risk, but it drives scale on fixtures and water heaters, shortens appliance life, and leaves skin and hair dry.

Source: USGS hardness zone (regional estimate) · 2026Q2

EPA violations may be administrative or monitoring/reporting issues rather than measured exceedances of a health limit. A utility appearing on this list does not by itself mean the water is unsafe to drink. Health-based goals (EPA MCLG / WHO) are health targets and are often stricter than the legal limit (the federal MCL). The only way to know what is in your specific home is to test your own water.

Your water provider

GREEN RIVER CITY

Population served
910
PWSID
UTAH08005

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Source: EPA SDWIS (Safe Drinking Water Information System) · 2026Q2