Hidalgo County tap water
0 of 16 water systems serving Hidalgo County with full PFAS testing averaged above a 2024 federal PFAS level at one or more sampling points.
- 25 community water systems list this county as served; 16 serve 3,300+ people with full PFAS testing.
- 10 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 |
|---|---|---|---|---|
| North Alamo Wsc | Surface water | 171,195 | No | 2 |
| Mcallen Public Utility | Surface water | 145,050 | No | 0 |
| City of Edinburg | Surface water | 85,224 | No | 1 |
| City of Pharr | Surface water | 79,715 | No | 0 |
| City of Mission | Surface water | 77,058 | No | 0 |
| Sharyland Wsc | Surface water | 68,562 | No | 0 |
| Agua Sud | Surface water | 53,796 | No | 1 |
| City of San Juan | Surface water | 30,000 | No | 0 |
| City of Alamo | Surface water | 21,065 | No | 0 |
| City of Donna | Surface water | 18,720 | No | 0 |
| Military Hwy Wsc Las Rusias | Purchased surface water | 17,943 | No | 6 |
| City of Mercedes | Surface water | 16,258 | No | 1 |
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.