Yavapai County · Arizona · EPA SDWIS 2026Q2
Prescott Valley Water Quality
What's in Prescott Valley's water
Total Trihalomethanes (TTHM)
Violation on record
4 EPA violations on record (most recent 2024). 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.
Haloacetic Acids (HAA5)
Violation on record
1 EPA violation on record (most recent 2024). HAA5 are a second group of chlorine disinfection byproducts formed when chlorine reacts with organic matter in water. Long-term exposure is associated with increased cancer risk and possible developmental effects. They commonly occur together with trihalomethanes.
Water hardness
very hard
Prescott Valley'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.
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TOWN OF PRESCOTT VALLEY
- Population served
- 57,048
- PWSID
- AZ0413048
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