All water systems in Texas
7,430 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Block House MUD Williamson County |
6,618 | 0 | 0 | |
|
Memorial MUD Harris County |
6,615 | 0 | 0 | |
|
City of Alvarado Johnson County |
6,614 | 5 | 2 | |
|
Tdcj Beto Unit Anderson County |
6,613 | 3 | 0 | |
|
City of Iowa Park Wichita County |
6,612 | 5 | 2 | |
|
Heatherloch MUD Harris County |
6,612 | 0 | 0 | |
|
Horsepen Bayou MUD Harris County |
6,597 | 0 | 0 | |
|
Interstate MUD Harris County |
6,591 | 0 | 0 | |
|
Harris County MUD 354 Harris County |
6,588 | 1 | 1 | |
|
Montgomery County MUD 15 Montgomery County |
6,564 | 0 | 0 | |
|
Harris County Wcid 84 Harris County |
6,552 | 0 | 0 | |
|
Chatfield WSC Navarro County |
6,546 | 2 | 0 | |
|
Mission Bend MUD 1 Harris County |
6,546 | 2 | 1 | |
|
Liberty City WSC Gregg County |
6,540 | 0 | 0 | |
|
Wichita Valley WSC Wichita County |
6,516 | 1 | 0 | |
|
MD Anderson Cancer Center Alkek Harris County |
6,500 | 0 | 0 | |
|
City of Hutchins Dallas County |
6,495 | 5 | 1 | |
|
City of Parker Collin County |
6,486 | 0 | 0 | |
|
City of White Oak Gregg County |
6,469 | 3 | 0 | |
|
Kaufman County MUD 14 Kaufman County |
6,456 | 2 | 1 | |
|
City of Kenedy Karnes County |
6,454 | 4 | 0 | |
|
Big Oaks MUD Fort Bend County |
6,450 | 1 | 1 | |
|
City of Gladewater Gregg County |
6,441 | 7 | 2 | |
|
Montgomery County MUD 95 Montgomery County |
6,435 | 0 | 0 | |
|
Sienna MUD 4 Fort Bend County |
6,435 | 1 | 0 | |
|
Harris County MUD 65 Harris County |
6,330 | 0 | 0 | |
|
B H P WSC Hunt County |
6,321 | 1 | 0 | |
|
City of Lindale Smith County |
6,313 | 0 | 0 | |
|
Parker County SUD Surface Parker County |
6,300 | 0 | 0 | |
|
Fort Bend County MUD 35 Fort Bend County |
6,297 | 0 | 0 | |
|
San Diego MUD 1 Duval County |
6,291 | 5 | 2 | |
|
EL Oso WSC Karnes County |
6,288 | 2 | 0 | |
|
Grand Mission MUD 2 Fort Bend County |
6,285 | 0 | 0 | |
|
City of Everman Tarrant County |
6,279 | 5 | 2 | |
|
Riverside SUD Walker County |
6,246 | 3 | 0 | |
|
Fort Bend County MUD 50 Fort Bend County |
6,234 | 0 | 0 | |
|
Oak Hills WSC Wilson County |
6,225 | 1 | 0 | |
|
Lake Forest Utility District Harris County |
6,201 | 0 | 0 | |
|
Cinco MUD 14 Fort Bend County |
6,192 | 0 | 0 | |
|
Grand San Jacinto Water System Liberty County |
6,174 | 0 | 0 | |
|
Blackland WSC Rockwall County |
6,171 | 2 | 0 | |
|
Harris County MUD 364 Harris County |
6,168 | 0 | 0 | |
|
Leigh Wsc-Rural Harrison County |
6,164 | 1 | 0 | |
|
East Medina County SUD Unit 1 Medina County |
6,153 | 0 | 0 | |
|
Hardin WSC Liberty County |
6,132 | 0 | 0 | |
|
Harris County MUD 222 Harris County |
6,129 | 0 | 0 | |
|
City of Madisonville Madison County |
6,111 | 3 | 1 | |
|
City of Childress Childress County |
6,105 | 5 | 3 | |
|
City of Houston District 73 Harris County |
6,105 | 0 | 0 | |
|
Cinco Southwest MUD 4 Fort Bend County |
6,093 | 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.