Maricopa County · Arizona · EPA SDWIS 2026Q2
Sun City West Water Quality
What's in Sun City West's water
Arsenic
Violation on record
2 EPA violations on record (most recent 2023). Arsenic is a naturally occurring element that dissolves into groundwater from rock and is also released by mining and industry. Long-term exposure is associated with several cancers and with skin, cardiovascular, and developmental harm. It is common in parts of the Southwest.
Haloacetic Acids (HAA5)
Violation on record
1 EPA violation on record (most recent 2022). 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
Sun City West'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.
Your water provider
EPCOR - SUN CITY WEST
- Population served
- 25,796
- PWSID
- AZ0407150
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