Revised Total Coliform Rule (RTCR) violations in Texas
1,311 active public water systems in Texas had a Revised Total Coliform Rule (RTCR) violation in the past three years, 313 of them in the latest quarter of EPA's data. What Revised Total Coliform Rule (RTCR) is and why it matters.
Systems with a Revised Total Coliform Rule (RTCR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
South Newton WSC Newton County |
3,729 | 4 | 0 | |
|
Woodland Oaks Subdivision Montgomery County |
3,666 | 2 | 0 | |
|
Fort Bend County MUD 185 Fort Bend County |
3,663 | 2 | 0 | |
|
Kendall County Wcid 1 Kendall County |
3,579 | 4 | 0 | |
|
Santo SUD Palo Pinto County |
3,546 | 4 | 0 | |
|
Harris County MUD 257 Harris County |
3,501 | 1 | 0 | |
|
City of Combes Cameron County |
3,500 | 4 | 2 | |
|
City of Hudson Oaks Parker County |
3,487 | 6 | 0 | |
|
Fort Bend County MUD 121 Fort Bend County |
3,477 | 1 | 0 | |
|
Sun WSC Taylor County |
3,420 | 2 | 1 | |
|
Fort Bliss Detention Center El Paso County |
3,400 | 2 | 0 | |
|
Tdcj Jester Unit 3 Fort Bend County |
3,365 | 4 | 0 | |
|
Fort Griffin SUD Shackelford County |
3,300 | 6 | 2 | |
|
Harris County Wcid 161 Harris County |
3,129 | 2 | 1 | |
|
City of Pelican Bay Tarrant County |
3,120 | 6 | 1 | |
|
Post Oak SUD Hill County |
3,117 | 5 | 2 | |
|
Pendleton WSC Bell County |
3,111 | 2 | 1 | |
|
5th Street Water System Fort Bend County |
3,099 | 1 | 0 | |
|
Woodcreek Utility 2 Hays County |
3,096 | 5 | 1 | |
|
B & B WSC Navarro County |
3,027 | 4 | 1 | |
|
Royal Isd Waller County |
3,000 | 1 | 0 | |
|
City of Bartlett Williamson County |
2,950 | 7 | 4 | |
|
View Caps WSC Taylor County |
2,928 | 5 | 2 | |
|
Deanville WSC Burleson County |
2,850 | 6 | 2 | |
|
Pennington WSC Trinity County |
2,839 | 2 | 0 | |
|
Ross WSC McLennan County |
2,811 | 2 | 0 | |
|
City of Holliday Archer County |
2,724 | 1 | 0 | |
|
Big Eddy Smith County |
2,709 | 3 | 0 | |
|
Fountainview Subdivision Harris County |
2,703 | 4 | 1 | |
|
City of Leonard Fannin County |
2,691 | 3 | 0 | |
|
City of East Tawakoni Rains County |
2,686 | 7 | 1 | |
|
Violet WSC Nueces County |
2,670 | 5 | 0 | |
|
City of Quanah Hardeman County |
2,662 | 6 | 2 | |
|
Moore Station WSC Henderson County |
2,625 | 3 | 0 | |
|
Blue Bell Manor Subdivision Harris County |
2,607 | 2 | 1 | |
|
City of Seymour Baylor County |
2,576 | 3 | 1 | |
|
Swift WSC Nacogdoches County |
2,547 | 3 | 1 | |
|
City of la Vernia Wilson County |
2,526 | 5 | 0 | |
|
South Buda Wcid 1 Hays County |
2,517 | 1 | 0 | |
|
Tdcj Memorial Unit Brazoria County |
2,501 | 4 | 1 | |
|
Brownsville Navigation District Cameron County |
2,500 | 1 | 0 | |
|
City of Runaway Bay Wise County |
2,458 | 9 | 1 | |
|
Lilly Grove SUD Nacogdoches County |
2,435 | 2 | 0 | |
|
Hazy Hollow East Estates Montgomery County |
2,424 | 3 | 0 | |
|
Caro WSC Nacogdoches County |
2,412 | 5 | 2 | |
|
Blue Mound Tarrant County |
2,396 | 1 | 0 | |
|
East High School Magnolia Isd Montgomery County |
2,391 | 5 | 3 | |
|
Alto Rural WSC Coldsprings Plant Cherokee County |
2,313 | 7 | 2 | |
|
Shamrock Municipal Water System Wheeler County |
2,311 | 1 | 0 | |
|
City of Sabinal Uvalde County |
2,301 | 6 | 3 |
About this data
A system is counted once if any of its violations in the past three years involved Revised Total Coliform Rule (RTCR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Revised Total Coliform Rule (RTCR) alone.
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.