County · Texas
Hidalgo County, Texas: drinking water records
This overview covers 29 ZIP codes and 24 community water systems in Hidalgo County. It also stands in for 1 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| North Alamo WSC TX1080029 | 171,195 | 780 | 5 | 5 | 0 ppb |
| City of Edinburg TX1080004 | 85,224 | 240 | 3 | 2 | 0 ppb |
| Sharyland WSC TX1080033 | 68,562 | 360 | 8 | 1 | 1 ppb |
| Agua SUD TX1080022 | 53,796 | 240 | 3 | 1 | 0.8 ppb |
| City of Weslaco TX1080011 | 40,033 | 95 | 6 | 1 | 1.5 ppb |
| Military Hwy WSC Las Rusias TX1080067 | 17,943 | 240 | 0 | 25 | 0 ppb |
| City of Mercedes TX1080007 | 16,258 | 120 | 1 | 1 | 3.7 ppb |
| City of Hidalgo Water System TX1080021 | 14,800 | 120 | 0 | 1 | 1.8 ppb |
| Mcallen Public Utility TX1080006 | 189,957 | 240 | 1 | 0 | 2.3 ppb |
| City of Pharr TX1080009 | 79,715 | 120 | 1 | 0 | 1.1 ppb |
| City of Mission TX1080008 | 77,058 | 240 | 1 | 0 | 0 ppb |
| City of San Juan TX1080010 | 30,000 | 240 | 6 | 0 | 0 ppb |
| City of Alamo TX1080001 | 21,065 | 120 | 3 | 0 | 1 ppb |
| City of Donna TX1080002 | 18,720 | 120 | 6 | 0 | 1.6 ppb |
| Military Hwy WSC Progreso TX1080234 | 12,198 | 120 | 0 | 0 | 0 ppb |
| Hidalgo County MUD 1 TX1080088 | 8,420 | 120 | 3 | 0 | 1.1 ppb |
| City of Elsa TX1080005 | 5,500 | 120 | 2 | 0 | 1.7 ppb |
| City of la Joya TX1080213 | 3,033 | 0 | 0 | 14 | 0 ppb |
| City of la Villa TX1080023 | 2,781 | 0 | 0 | 1 | 0 ppb |
| Llano Grande Lake Park East TX1080034 | 1,300 | 0 | 0 | 6 | 3.1 ppb |
| Llano Grande Lake Park West TX1080236 | 300 | 0 | 0 | 2 | 15.6 ppb |
| City of Edcouch TX1080003 | 2,878 | 0 | 0 | 0 | 0 ppb |
| Military Hwy WSC Weslaco TX1080235 | 1,584 | 0 | 0 | 0 | 0 ppb |
| Trails End Mobile Home Park TX1080223 | 200 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Hidalgo County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 78596.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.