Water quality for ZIP code 78540
Hidalgo County, Texas, one of 29 ZIP codes in the county. 31 active public water systems serve the county; 25 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Hidalgo County
24 systems, largest first| System | Serves | Status | Rules violated, 3 yr |
|---|---|---|---|
| McAllen Public Utility |
145,050 | 1 | |
| City of Edinburg |
85,224 | 3 | |
| City of Pharr |
79,715 | 0 | |
| City of Mission |
77,058 | 2 | |
| Sharyland WSC |
68,562 | 0 | |
| Agua SUD |
53,796 | 0 | |
| City of Weslaco |
40,033 | 2 | |
| City of San Juan |
30,000 | 1 | |
| City of Alamo |
21,065 | 2 | |
| City of Donna |
18,720 | 2 | |
| Military Hwy WSC las Rusias |
17,943 | 2 | |
| City of Mercedes |
16,258 | 3 | |
| City of Hidalgo Water System |
14,800 | 4 | |
| Military Hwy WSC Progreso |
12,198 | 0 | |
| Hidalgo County MUD 1 |
8,420 | 3 | |
| City of Elsa |
5,500 | 2 | |
| City of la Joya |
3,033 | 7 | |
| City of Edcouch |
2,878 | 2 | |
| City of la Villa |
2,781 | 3 | |
| Military Hwy WSC Weslaco |
1,584 | 0 | |
| Llano Grande Lake Park East |
1,300 | 3 | |
| Quiet Village II |
492 | 4 | |
| Llano Grande Lake Park West |
300 | 4 | |
| Trails End Mobile Home Park |
200 | 2 |
Non-community systems in Hidalgo County (6: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Bentsen Grove Resort |
1,550 | 1 | 0 | |
|
Leisure World Mobile Home Community |
700 | 1 | 0 | |
|
Lazy Palms Ranch |
400 | 3 | 1 | |
|
Aqua Planet Water Park |
110 | 2 | 0 | |
|
Usda Moore Field |
100 | 1 | 1 | |
|
Sleepy Hollow Trailer Park |
55 | 0 | 0 |
About this data
Water systems are matched to Hidalgo County, the county this ZIP code lies in, largest first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Texas records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.