All water systems in Texas
7,430 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Parker WSC Johnson County |
3,300 | 3 | 0 | |
|
City of Early Brown County |
3,296 | 3 | 0 | |
|
Travis County MUD 2 Travis County |
3,294 | 0 | 0 | |
|
Armstrong WSC Bell County |
3,285 | 0 | 0 | |
|
Leagueville WSC Henderson County |
3,285 | 2 | 2 | |
|
Lake Livingston Oakridge North Polk County |
3,284 | 4 | 0 | |
|
Montgomery County MUD 105 Montgomery County |
3,282 | 0 | 0 | |
|
Harris County MUD 8 Harris County |
3,271 | 0 | 0 | |
|
Fort Bend County Fwsd 2 Fort Bend County |
3,258 | 0 | 0 | |
|
Waller County MUD 37 Waller County |
3,258 | 0 | 0 | |
|
Harris County MUD 282 Harris County |
3,237 | 0 | 0 | |
|
Corbet WSC Navarro County |
3,234 | 1 | 0 | |
|
City of Bandera Bandera County |
3,231 | 5 | 0 | |
|
Point Aquarius MUD Montgomery County |
3,228 | 0 | 0 | |
|
Sunbelt Fwsd Northline Terrace Harris County |
3,225 | 1 | 0 | |
|
City of Grand Saline Van Zandt County |
3,219 | 3 | 1 | |
|
Grand Lakes MUD 1 Fort Bend County |
3,219 | 0 | 0 | |
|
Harris County MUD 144 Harris County |
3,219 | 2 | 1 | |
|
Northeast Washington County Washington County |
3,219 | 0 | 0 | |
|
Picosa WSC Wilson County |
3,210 | 2 | 1 | |
|
M & M WSC Angelina County |
3,208 | 1 | 1 | |
|
Harris County MUD 136 Harris County |
3,201 | 0 | 0 | |
|
Harris County MUD 396 Harris County |
3,201 | 0 | 0 | |
|
Lubbock Cooper Isd Lubbock County |
3,198 | 0 | 0 | |
|
Union Grove WSC Upshur County |
3,198 | 1 | 0 | |
|
City of Blanco Blanco County |
3,192 | 4 | 2 | |
|
Harris County Wcid 136 Harris County |
3,192 | 1 | 1 | |
|
Westwood North WSC Montgomery County |
3,186 | 0 | 0 | |
|
Montgomery County MUD 88 Montgomery County |
3,183 | 2 | 1 | |
|
West Brazos WSC Falls County |
3,183 | 0 | 0 | |
|
Fort Bend County MUD 24 Fort Bend County |
3,177 | 0 | 0 | |
|
Spearman Municipal Water System Hansford County |
3,172 | 2 | 1 | |
|
City of Nocona Montague County |
3,170 | 1 | 0 | |
|
Harris County MUD 23 Harris County |
3,170 | 1 | 0 | |
|
Nueces WSC Nueces County |
3,165 | 0 | 0 | |
|
Northwest Harris County MUD 22 Harris County |
3,156 | 0 | 0 | |
|
Oak Ridge South Gale WSC Grayson County |
3,153 | 2 | 1 | |
|
City of San Saba San Saba County |
3,151 | 0 | 0 | |
|
Fort Bend County MUD 130 Fort Bend County |
3,150 | 0 | 0 | |
|
Tdcj Wainwright Unit Houston County |
3,148 | 3 | 0 | |
|
Harris County Wcid Fondren Road Harris County |
3,144 | 2 | 1 | |
|
Lake Windcrest Water System Montgomery County |
3,144 | 0 | 0 | |
|
Melrose WSC Nacogdoches County |
3,143 | 4 | 3 | |
|
City of Pinehurst Orange County |
3,131 | 0 | 0 | |
|
Harris County Wcid 161 Harris County |
3,129 | 2 | 1 | |
|
East Montgomery County MUD 5 Montgomery County |
3,126 | 1 | 0 | |
|
City of Pelican Bay Tarrant County |
3,120 | 6 | 1 | |
|
Slocum WSC Anderson County |
3,120 | 1 | 0 | |
|
Terranova West MUD Harris County |
3,120 | 1 | 0 | |
|
Post Oak SUD Hill County |
3,117 | 5 | 2 |
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.