All water systems in Texas
7,430 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
City of Houston Harris County |
2,970,543 | 1 | 0 | |
|
San Antonio Water System Bexar County |
2,643,729 | 0 | 0 | |
|
Dallas Water Utility Dallas County |
1,356,479 | 0 | 0 | |
|
City of Austin Water & Wastewater Travis County |
1,115,323 | 0 | 0 | |
|
City of Fort Worth Tarrant County |
955,900 | 1 | 0 | |
|
EL Paso Water Utilities El Paso County |
747,168 | 1 | 0 | |
|
City of Arlington Tarrant County |
413,955 | 0 | 0 | |
|
City of Corpus Christi Nueces County |
317,247 | 0 | 0 | |
|
City of Plano Collin County |
292,059 | 0 | 0 | |
|
Lubbock Public Water System Lubbock County |
266,450 | 2 | 0 | |
|
City of Irving Dallas County |
264,546 | 0 | 0 | |
|
City of Laredo Webb County |
260,046 | 4 | 0 | |
|
City of Garland Dallas County |
248,822 | 2 | 0 | |
|
City of Frisco Collin County |
231,910 | 0 | 0 | |
|
City of McKinney Collin County |
224,043 | 0 | 0 | |
|
City of Grand Prairie Dallas County |
201,843 | 0 | 0 | |
|
Amarillo Municipal Water System Potter County |
201,291 | 1 | 0 | |
|
Brownsville Public Utilities Board Cameron County |
201,249 | 0 | 0 | |
|
City of Georgetown Williamson County |
191,639 | 3 | 0 | |
|
Dallas Fort Worth International Airport Dallas County |
177,673 | 1 | 0 | |
|
North Alamo WSC Hidalgo County |
171,195 | 3 | 0 | |
|
City of Killeen Bell County |
161,027 | 0 | 0 | |
|
City of Mesquite Dallas County |
158,412 | 1 | 0 | |
|
City of Midland Water Purification Plant Midland County |
157,000 | 3 | 1 | |
|
City of Pasadena Harris County |
152,000 | 1 | 1 | |
|
City of Denton Denton County |
150,037 | 0 | 0 | |
|
City of League City Galveston County |
149,557 | 1 | 0 | |
|
City of Waco McLennan County |
146,241 | 0 | 0 | |
|
McAllen Public Utility Hidalgo County |
145,050 | 1 | 0 | |
|
City of Lewisville Denton County |
140,880 | 1 | 0 | |
|
City of Carrollton Dallas County |
136,170 | 0 | 0 | |
|
City of Round Rock Williamson County |
130,662 | 0 | 0 | |
|
City of Abilene Taylor County |
130,501 | 0 | 0 | |
|
Mustang SUD Denton County |
127,911 | 3 | 1 | |
|
City of Pearland Brazoria County |
125,828 | 4 | 0 | |
|
City of Odessa Ector County |
123,334 | 4 | 1 | |
|
City of Richardson Dallas County |
122,615 | 0 | 0 | |
|
New Braunfels Utilities Comal County |
116,477 | 1 | 0 | |
|
City of Conroe Montgomery County |
113,912 | 0 | 0 | |
|
City of Allen Collin County |
113,746 | 0 | 0 | |
|
City of Beaumont Water Utility Dept Jefferson County |
113,567 | 1 | 0 | |
|
City of Tyler Smith County |
107,000 | 2 | 0 | |
|
City of San Angelo Tom Green County |
105,229 | 5 | 0 | |
|
City of College Station Brazos County |
104,103 | 0 | 0 | |
|
City of Wichita Falls Wichita County |
101,915 | 1 | 0 | |
|
City of Leander Williamson County |
98,330 | 4 | 3 | |
|
City of Temple Bell County |
94,935 | 1 | 1 | |
|
City of Bryan Brazos County |
91,031 | 1 | 0 | |
|
Clear Lake City Water Authority Harris County |
89,702 | 0 | 0 | |
|
City of Mansfield Tarrant County |
89,227 | 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.