All water systems in Texas
7,430 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
City of Groves Jefferson County |
17,335 | 2 | 2 | |
|
Town of Addison Dallas County |
17,257 | 0 | 0 | |
|
Harris County MUD 26 Harris County |
17,178 | 1 | 1 | |
|
Harris County MUD 71 Harris County |
17,079 | 0 | 0 | |
|
City of Port Neches Jefferson County |
17,043 | 1 | 0 | |
|
City of Hewitt McLennan County |
16,978 | 0 | 0 | |
|
Montgomery County MUD 67 Montgomery County |
16,821 | 1 | 1 | |
|
Fort Bend County MUD 30 Fort Bend County |
16,794 | 1 | 0 | |
|
Harris County MUD 167 Harris County |
16,761 | 1 | 1 | |
|
Sonterra MUD Williamson County |
16,614 | 3 | 0 | |
|
City of Highland Village Denton County |
16,500 | 2 | 1 | |
|
Harris County MUD 55 Heritage Park Harris County |
16,392 | 0 | 0 | |
|
City of Mercedes Hidalgo County |
16,258 | 3 | 1 | |
|
City of Sulphur Springs Hopkins County |
16,243 | 0 | 0 | |
|
City of Mount Pleasant Titus County |
16,238 | 1 | 0 | |
|
City of Gatesville Coryell County |
16,135 | 1 | 0 | |
|
Maxwell SUD Caldwell County |
16,104 | 2 | 0 | |
|
Hereford Municipal Water System Deaf Smith County |
16,048 | 3 | 0 | |
|
Talty SUD Kaufman County |
15,987 | 0 | 0 | |
|
Bear Creek SUD Collin County |
15,822 | 0 | 0 | |
|
Canyon Municipal Water System Randall County |
15,771 | 1 | 0 | |
|
City of Humble Harris County |
15,616 | 0 | 0 | |
|
City of Mineral Wells Palo Pinto County |
15,564 | 2 | 0 | |
|
City of Sugar Land New Territory Fort Bend County |
15,546 | 0 | 0 | |
|
City of Kilgore Gregg County |
15,543 | 3 | 1 | |
|
Harris County Fwsd 61 Harris County |
15,400 | 1 | 0 | |
|
City of Dayton Liberty County |
15,393 | 4 | 1 | |
|
Fort Bend County MUD 25 Fort Bend County |
15,327 | 0 | 0 | |
|
Ector County Utility District Ector County |
15,300 | 3 | 0 | |
|
Orange County Wcid 1 Orange County |
15,258 | 2 | 1 | |
|
City of Mabank Kaufman County |
15,207 | 3 | 1 | |
|
City of Livingston Polk County |
15,199 | 0 | 0 | |
|
City of la Marque Galveston County |
15,154 | 5 | 4 | |
|
Montgomery County MUD 60 Montgomery County |
15,036 | 0 | 0 | |
|
East Biggs Water System El Paso County |
15,000 | 0 | 0 | |
|
Wickson Creek SUD Brazos County |
15,000 | 2 | 0 | |
|
City of Dumas Moore County |
14,935 | 5 | 3 | |
|
Harris County MUD 105 Harris County |
14,925 | 1 | 1 | |
|
Pecan Grove MUD Fort Bend County |
14,913 | 2 | 1 | |
|
Nueces County Wcid 4 Nueces County |
14,880 | 1 | 0 | |
|
Harris County MUD 200 Cranbrook Harris County |
14,868 | 0 | 0 | |
|
City of Azle Tarrant County |
14,847 | 0 | 0 | |
|
East Cedar Creek Fwsd Brookshire Henderson County |
14,823 | 5 | 0 | |
|
City of Hidalgo Water System Hidalgo County |
14,800 | 4 | 1 | |
|
Harris County MUD 24 Harris County |
14,796 | 0 | 0 | |
|
Lindale Rural WSC Smith County |
14,781 | 2 | 1 | |
|
Caddo Basin SUD Hunt County |
14,748 | 0 | 0 | |
|
Cnp Utility District Harris County |
14,718 | 0 | 0 | |
|
Lee County WSC Lee County |
14,670 | 1 | 0 | |
|
City of Henderson Rusk County |
14,666 | 5 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules still in violation at EPA's latest data refresh.
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.