All water systems in Texas
7,430 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Macedonia Eylau MUD 1 Bowie County |
14,652 | 3 | 2 | |
|
City of Jacksonville Cherokee County |
14,420 | 3 | 0 | |
|
Quail Valley Utility District Fort Bend County |
14,409 | 0 | 0 | |
|
New Caney MUD Montgomery County |
14,307 | 0 | 0 | |
|
Harris County MUD 285 Harris County |
14,268 | 2 | 0 | |
|
City of Houston Willow Chase Harris County |
14,169 | 0 | 0 | |
|
City of Willis Montgomery County |
14,133 | 9 | 2 | |
|
City of Andrews Andrews County |
14,109 | 2 | 0 | |
|
Nueces County Wcid 3 Nueces County |
14,000 | 3 | 0 | |
|
Meadowhill Regional MUD Harris County |
13,863 | 0 | 0 | |
|
Atascosa Rural WSC Bexar County |
13,857 | 6 | 1 | |
|
Harris County Wcid 21 Harris County |
13,845 | 3 | 0 | |
|
City of Buda Hays County |
13,830 | 2 | 0 | |
|
Remington MUD 1 Harris County |
13,746 | 0 | 0 | |
|
Zapata County Waterworks Swtp Zapata County |
13,736 | 1 | 0 | |
|
City of Webster Harris County |
13,710 | 0 | 0 | |
|
City of Forest Hill Tarrant County |
13,701 | 0 | 0 | |
|
Cypress Springs SUD N Plant 1 & NE Plant Franklin County |
13,698 | 1 | 1 | |
|
Fort Bend County MUD 23 Fort Bend County |
13,695 | 0 | 0 | |
|
City of Beeville Bee County |
13,664 | 5 | 2 | |
|
Trophy Club MUD 1 Denton County |
13,649 | 0 | 0 | |
|
City of Seabrook Harris County |
13,560 | 1 | 0 | |
|
Southern Montgomery County MUD Montgomery County |
13,372 | 1 | 0 | |
|
City of Bastrop Bastrop County |
13,209 | 2 | 0 | |
|
Harris County MUD 120 Harris County |
13,197 | 0 | 0 | |
|
Newport MUD Harris County |
13,191 | 1 | 0 | |
|
City of Elgin Bastrop County |
13,188 | 1 | 0 | |
|
Harris County MUD 157 Harris County |
13,062 | 0 | 0 | |
|
Harris County MUD 168 Harris County |
13,029 | 0 | 0 | |
|
Brookesmith Special Utility District Brown County |
13,026 | 1 | 0 | |
|
Kingsland WSC Llano County |
12,975 | 2 | 0 | |
|
Town of Pecos City Reeves County |
12,916 | 1 | 0 | |
|
City of Mont Belvieu Chambers County |
12,864 | 2 | 1 | |
|
Denton County Fwsd 7 Denton County |
12,837 | 2 | 2 | |
|
BI County WSC 1 Camp County |
12,777 | 3 | 1 | |
|
City of Horseshoe Bay Llano County |
12,729 | 3 | 0 | |
|
Argyle WSC Denton County |
12,720 | 4 | 3 | |
|
G M WSC Sabine County |
12,672 | 4 | 1 | |
|
City of Levelland Hockley County |
12,652 | 3 | 0 | |
|
Tomball Isd Cypress Rosehill Plant Harris County |
12,600 | 3 | 0 | |
|
Montgomery County MUD 7 Montgomery County |
12,528 | 1 | 1 | |
|
City of Cleveland Liberty County |
12,438 | 1 | 0 | |
|
Borger Municipal Water System Hutchinson County |
12,419 | 2 | 2 | |
|
City of Sweetwater Nolan County |
12,401 | 0 | 0 | |
|
City of Sugar Land Greatwood Fort Bend County |
12,368 | 0 | 0 | |
|
City of Fredericksburg Gillespie County |
12,360 | 4 | 1 | |
|
Harris County MUD 1 Harris County |
12,342 | 0 | 0 | |
|
Military Hwy WSC Progreso Hidalgo County |
12,198 | 0 | 0 | |
|
Yancey WSC Medina County |
12,186 | 0 | 0 | |
|
Northampton MUD Harris County |
12,162 | 0 | 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.