Pinal County tap water
1 of 15 water systems serving Pinal County with full PFAS testing averaged above a 2024 federal PFAS level at one or more sampling points.
- 64 community water systems list this county as served; 13 serve 3,300+ people with full PFAS testing.
- 36 had a health-based violation since 2021-10-26.
Largest systems serving this county
| System | Source | People served (whole system) | PFAS above a 2024 level? | Violations since 2021-10-26 |
|---|---|---|---|---|
| Arizona Water CO - Pinal Valley | Groundwater | 134,432 | No | 0 |
| Epcor - San Tan | Groundwater | 87,435 | No | 0 |
| Gw Santa Cruz Water CO | Groundwater | 84,000 | No | 1 |
| Arizona Water CO - Apache Junction | Groundwater | 62,055 | No | 0 |
| Lago Del Oro Water Company | Groundwater | 18,132 | No | 0 |
| Florence Water Company | Groundwater | 14,593 | No | 1 |
| Arizona Water CO - Oracle | Groundwater | 10,585 | No | 0 |
| Epcor - San Tan Anthem | Groundwater | 10,362 | Yes | 0 |
| Eloy City of | Groundwater | 8,999 | No | 3 |
| Cca - Eloy Complex | Groundwater | 8,852 | No | 0 |
| Arizona Water CO - San Manuel | Purchased groundwater | 4,737 | No | 1 |
| Arizona Water CO - Superior | Groundwater | 4,232 | No | 0 |
Which one is yours? A county usually has several utilities. Your bill or your utility's annual water-quality report names yours. Population is for the whole system, which can cross county lines.
Not medical or legal advice. UCMR 5 results are screening data, not compliance determinations.
Sources and freshness
Public-water-system facts, violations and lead/copper results: EPA ECHO SDWA download (SDWIS snapshot 2026-10-13). PFAS and lithium results: EPA UCMR 5 final data (sampling 2023–2025). Both are U.S. government works, downloaded 2026-10-26. Numbers are computed by the published method; the same fields are in the open data files.