E. coli (Escherichia coli) violations in Texas
233 active public water systems in Texas had a E. coli (Escherichia coli) violation in the past three years, 233 of them in the latest quarter of EPA's data. What E. coli (Escherichia coli) is and why it matters.
Systems with a E. coli (Escherichia coli) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Aqua WSC Bastrop County |
86,325 | 5 | 1 | |
|
Southern Utilities Smith County |
69,735 | 2 | 1 | |
|
City of Lufkin Angelina County |
51,236 | 3 | 2 | |
|
Manville WSC Travis County |
39,648 | 3 | 1 | |
|
Jbsa Sam Houston Bexar County |
37,563 | 1 | 0 | |
|
Springs Hill SUD Guadalupe County |
35,541 | 4 | 2 | |
|
Galveston County Wcid 1 Galveston County |
30,399 | 2 | 1 | |
|
County Line SUD Hays County |
19,609 | 3 | 1 | |
|
City of West University Place Harris County |
19,200 | 3 | 2 | |
|
Harris County MUD 167 Harris County |
16,761 | 1 | 1 | |
|
Pecan Grove MUD Fort Bend County |
14,913 | 2 | 1 | |
|
City of Mont Belvieu Chambers County |
12,864 | 2 | 1 | |
|
Memorial Villages Water Authority Harris County |
11,382 | 1 | 1 | |
|
City of Bruceville Eddy McLennan County |
10,570 | 4 | 2 | |
|
Ponderosa Forest Utility District Harris County |
10,101 | 3 | 0 | |
|
City of Pearsall Frio County |
8,985 | 4 | 3 | |
|
Chelford City MUD Harris County |
8,917 | 1 | 1 | |
|
Creedmoor Maha WSC Travis County |
8,907 | 2 | 1 | |
|
City of Floresville Wilson County |
8,306 | 4 | 2 | |
|
Dalhart Municipal Water System Dallam County |
8,256 | 2 | 1 | |
|
City of Navasota Grimes County |
8,068 | 3 | 1 | |
|
Diana SUD Upshur County |
7,953 | 3 | 1 | |
|
City of Hempstead Waller County |
7,158 | 4 | 2 | |
|
City of Madisonville Madison County |
6,111 | 3 | 1 | |
|
City of Kermit Winkler County |
5,708 | 6 | 4 | |
|
City of Denver City Yoakum County |
5,500 | 3 | 1 | |
|
Jim Hogg County Wcid 2 Jim Hogg County |
5,397 | 5 | 3 | |
|
City of Trinity Trinity County |
4,619 | 3 | 2 | |
|
City of Redwater Bowie County |
4,356 | 6 | 4 | |
|
Harris County MUD 304 Harris County |
4,158 | 1 | 1 | |
|
Tpwd Ray Roberts Lake Isle Dubois Denton County |
4,056 | 2 | 1 | |
|
City of Eagle Lake Colorado County |
3,837 | 5 | 3 | |
|
Harris County MUD 401 Harris County |
3,750 | 2 | 1 | |
|
Four Pines WSC Anderson County |
3,603 | 1 | 0 | |
|
Harris County MUD 264 Harris County |
3,573 | 2 | 1 | |
|
City of Reno Parker County |
3,526 | 3 | 1 | |
|
Jasper County Wcid 1 Jasper County |
3,035 | 2 | 1 | |
|
Bitter Creek WSC South Nolan County |
2,973 | 3 | 1 | |
|
City of Clarksville Red River County |
2,885 | 4 | 2 | |
|
Goodsprings WSC Rusk County |
2,541 | 1 | 1 | |
|
Tdcj Memorial Unit Brazoria County |
2,501 | 4 | 1 | |
|
Hilltown Addition Denton County |
2,439 | 4 | 2 | |
|
City of Brackettville Kinney County |
2,352 | 4 | 2 | |
|
Alto Rural WSC Coldsprings Plant Cherokee County |
2,313 | 7 | 2 | |
|
City of Winters Runnels County |
2,281 | 6 | 2 | |
|
City of Mason Mason County |
2,228 | 6 | 2 | |
|
Tcw Supply Hutchinson County |
2,220 | 4 | 2 | |
|
Emerson Estates Montgomery County |
1,974 | 2 | 2 | |
|
City of Naples Morris County |
1,908 | 11 | 3 | |
|
Cypress Cove WSC Comal County |
1,825 | 4 | 3 |
About this data
A system is counted once if any of its violations in the past three years involved E. coli (Escherichia coli), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not E. coli (Escherichia coli) 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.