All water systems in Texas
7,430 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Fort Bend County MUD 129 Fort Bend County |
4,713 | 0 | 0 | |
|
Harris County MUD 360 Harris County |
4,707 | 0 | 0 | |
|
City of Palacios Matagorda County |
4,700 | 1 | 0 | |
|
City of Caddo Mills Hunt County |
4,688 | 3 | 1 | |
|
Lazy Nine MUD 1b Travis County |
4,669 | 3 | 0 | |
|
Harris County MUD 106 Harris County |
4,668 | 0 | 0 | |
|
Fort Bend County MUD 5 Fort Bend County |
4,665 | 0 | 0 | |
|
Reid Road MUD 2 Harris County |
4,662 | 1 | 0 | |
|
Friona Municipal Water System Parmer County |
4,653 | 3 | 1 | |
|
Harris Fort Bend Counties MUD 5 Fort Bend County |
4,641 | 0 | 0 | |
|
Fort Bend County MUD 149 Fort Bend County |
4,638 | 0 | 0 | |
|
Virginia Hill WSC Henderson County |
4,638 | 4 | 2 | |
|
Moffat WSC Bell County |
4,633 | 1 | 1 | |
|
West Hardin WSC Hardin County |
4,630 | 2 | 0 | |
|
Community WSC Tarrant County |
4,629 | 1 | 0 | |
|
City of Taft San Patricio County |
4,627 | 5 | 0 | |
|
City of Trinity Trinity County |
4,619 | 3 | 2 | |
|
Harris County MUD 185 Harris County |
4,617 | 0 | 0 | |
|
Fountainhead MUD Harris County |
4,614 | 0 | 0 | |
|
Jefferson County Wcid 10 Jefferson County |
4,605 | 4 | 0 | |
|
US Department of Energy Pantex Plant Carson County |
4,600 | 0 | 0 | |
|
Montgomery County MUD 115 Montgomery County |
4,599 | 0 | 0 | |
|
Sunbelt Fwsd Woodland Oaks Subdivision Harris County |
4,578 | 1 | 1 | |
|
Fort Bend County MUD 152 Fort Bend County |
4,575 | 0 | 0 | |
|
Harris County MUD 130 Harris County |
4,572 | 0 | 0 | |
|
Sand Flat WSC Smith County |
4,569 | 1 | 1 | |
|
Chelford One MUD Harris County |
4,557 | 0 | 0 | |
|
City of Howe Grayson County |
4,548 | 3 | 1 | |
|
City of Ovilla Ellis County |
4,532 | 0 | 0 | |
|
Elm Creek WSC McLennan County |
4,520 | 4 | 0 | |
|
Harris County MUD 344 Harris County |
4,518 | 2 | 0 | |
|
City of Mineola Wood County |
4,515 | 0 | 0 | |
|
Harris County MUD 284 Harris County |
4,506 | 0 | 0 | |
|
City of Dilley Frio County |
4,505 | 5 | 1 | |
|
Bethany SUD Johnson County |
4,503 | 3 | 1 | |
|
City of Bullard Smith County |
4,500 | 2 | 1 | |
|
Tpwd Garner State Park Uvalde County |
4,500 | 0 | 0 | |
|
Gbra Calhoun County Rural Water System Calhoun County |
4,482 | 4 | 2 | |
|
Falfurrias Utility Board Brooks County |
4,473 | 7 | 2 | |
|
Northwest Harris County MUD 23 Harris County |
4,470 | 0 | 0 | |
|
Renn Road MUD Harris County |
4,464 | 2 | 1 | |
|
Woodcreek MUD Harris County |
4,464 | 0 | 0 | |
|
Harris County MUD 365 Harris County |
4,461 | 2 | 1 | |
|
Kentuckytown WSC Grayson County |
4,455 | 2 | 0 | |
|
Harris County MUD 370 Harris County |
4,452 | 0 | 0 | |
|
Clay Road MUD Harris County |
4,443 | 1 | 0 | |
|
City of Three Rivers Live Oak County |
4,428 | 6 | 0 | |
|
Harris County MUD 69 Harris County |
4,422 | 0 | 0 | |
|
Montgomery County MUD 19 Montgomery County |
4,422 | 0 | 0 | |
|
Harris County MUD 397 Harris County |
4,413 | 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 currently 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.