Texas
Cameron County drinking water quality
30 active public water systems serve 444,744 people in Cameron County. 10 are compliant, 20 had at least one EPA violation in the past three years, 1 is a designated serious violator, and 3 carry a health flag.
Needs attention
Community water systems
21 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Brownsville Public Utilities Board |
201,249 | 0 | 0 | |
|
Harlingen Water Works System |
85,900 | 0 | 0 | |
|
Laguna Madre Water District |
46,674 | 1 | 0 | |
|
East Rio Hondo WSC |
25,509 | 0 | 0 | |
|
City of San Benito |
24,250 | 1 | 0 | |
|
EL Jardin WSC |
9,423 | 0 | 0 | |
|
Olmito WSC |
8,952 | 0 | 0 | |
|
City of la Feria |
7,226 | 2 | 1 | |
|
City of los Fresnos |
6,009 | 1 | 0 | |
|
City of Primera |
5,811 | 4 | 1 | |
|
Valley MUD 2 Rancho Viejo |
3,644 | 1 | 1 | |
|
City of Combes |
3,500 | 4 | 2 | |
|
City of Santa Rosa |
2,883 | 5 | 3 | |
|
City of Rio Hondo |
2,640 | 6 | 3 | |
|
East Rio Hondo WSC Arroyo City |
1,953 | 0 | 0 | |
|
City of Palm Valley |
1,310 | 0 | 0 | |
|
Town of Indian Lake |
888 | 2 | 0 | |
|
Starbase Water System |
743 | 2 | 0 | |
|
Carefree Valley Resort |
600 | 3 | 1 | |
|
Military Hwy WSC del Mar Heights |
213 | 0 | 0 | |
|
Southmost Regional Water Authority |
0 | 1 | 0 |
Non-community systems (9: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Brownsville Navigation District |
2,500 | 1 | 0 | |
|
Port Isabel Detention Center |
1,500 | 1 | 0 | |
|
Starbase Spacex Water Hauler |
806 | 0 | 0 | |
|
Starbase Pad Restroom PWS |
200 | 0 | 0 | |
|
Starbase AD Astra Phase 1a |
121 | 1 | 1 | |
|
Dusty Boots Bar and Dance Hall |
99 | 1 | 0 | |
|
Starbase Huddleston Tiny Homes |
88 | 1 | 0 | |
|
Starbase AD Astra School |
28 | 3 | 2 | |
|
Brownsville Pub Water Hauler |
25 | 1 | 0 |
Inactive systems (28, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
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.