Texas Drinking Water Compliance Records
4,749 water systems serving 33,188,144 people. 39,050 historical EPA violation records in the Q2 2026 snapshot.
TapScore Compliance-History Grades
A
4,163
88%
B
213
4%
C
194
4%
D
115
2%
F
64
1%
4,749
Water Systems
33,188,144
Population Served
39,050
Historical Records
7,748
Health-Based (All Years)
Systems With the Most Recent EPA Records
VALLEY ESTATES
68 served1,241 historical records453 recent
F
LEE LIMAS MOBILE HOME PARK
39 served669 historical records390 recent
D
SOUTH MIDLAND COUNTY WATER SYSTEM
165 served755 historical records198 recent
F
ROCKWELL ACRES WATER SYSTEM
250 served423 historical records192 recent
D
SEVEN ESTATES
189 served2,758 historical records191 recent
F
GRASSLAND WSC
55 served323 historical records136 recent
F
PLEASURE POINT
110 served299 historical records120 recent
D
LOMA LINDA WATER SUPPLY
216 served187 historical records109 recent
D
COUNTRY VIEW MHP
54 served196 historical records102 recent
F
MAPLE WSC
30 served158 historical records98 recent
C
Large Systems With No Recent Records
CITY OF HOUSTON
2,970,543 served1 historical record
A
SAN ANTONIO WATER SYSTEM
2,643,729 served22 historical records
A
DALLAS WATER UTILITY
1,356,479 served0 historical records
A
CITY OF AUSTIN WATER & WASTEWATER
1,115,323 served1 historical record
A
CITY OF FORT WORTH
955,900 served1 historical record
A
CITY OF ARLINGTON
413,955 served1 historical record
A
CITY OF CORPUS CHRISTI
318,387 served1 historical record
A
CITY OF PLANO
292,059 served0 historical records
A
LUBBOCK PUBLIC WATER SYSTEM
275,041 served2 historical records
A
CITY OF IRVING
264,546 served0 historical records
A
Largest Water Systems in Texas
| Water System | Grade | Population | Historical Records |
|---|---|---|---|
| CITY OF HOUSTON | A | 2,970,543 | 1 |
| SAN ANTONIO WATER SYSTEM | A | 2,643,729 | 22 |
| DALLAS WATER UTILITY | A | 1,356,479 | 0 |
| CITY OF AUSTIN WATER & WASTEWATER | A | 1,115,323 | 1 |
| CITY OF FORT WORTH | A | 955,900 | 1 |
| EL PASO WATER UTILITIES | C | 747,168 | 39 |
| CITY OF ARLINGTON | A | 413,955 | 1 |
| CITY OF CORPUS CHRISTI | A | 318,387 | 1 |
| CITY OF PLANO | A | 292,059 | 0 |
| LUBBOCK PUBLIC WATER SYSTEM | A | 275,041 | 2 |
| CITY OF IRVING | A | 264,546 | 0 |
| CITY OF LAREDO | D | 260,046 | 78 |
| CITY OF GARLAND | A | 248,822 | 1 |
| CITY OF FRISCO | A | 231,910 | 6 |
| CITY OF MCKINNEY | A | 224,043 | 0 |
| CITY OF GRAND PRAIRIE | A | 201,843 | 2 |
| AMARILLO MUNICIPAL WATER SYSTEM | B | 201,291 | 192 |
| BROWNSVILLE PUBLIC UTILITIES BOARD | A | 201,249 | 1 |
| CITY OF GEORGETOWN | A | 191,639 | 3 |
| MCALLEN PUBLIC UTILITY | A | 189,957 | 1 |
Contaminants in Texas
Lead in TexasArsenic in TexasNitrate in TexasFluoride in TexasPFOS in TexasPFOA in TexasTHMs in TexasHAA5 in Texas
Cities in Texas
HOUSTON(730)SAN ANTONIO(19)AUSTIN(673)DALLAS(34)FORT WORTH(14)EL PASO(11)ARLINGTON(3)CORPUS CHRISTI(2)PLANO(2)LUBBOCK(13)LAREDO(4)IRVING(1)EDINBURG(2)GARLAND(1)FRISCO(2)MCKINNEY(2)BROWNSVILLE(4)MISSION(4)AMARILLO(10)GRAND PRAIRIE(3)TYLER(10)GEORGETOWN(2)MCALLEN(1)SUGAR LAND(33)KILLEEN(4)WACO(12)MIDLAND(11)COLLEGE STATION(3)ROUND ROCK(10)THE WOODLANDS(21)PASADENA(3)MESQUITE(1)DENTON(5)CONROE(60)LEAGUE CITY(2)ABILENE(6)LEWISVILLE(2)ODESSA(5)SAN MARCOS(5)BEAUMONT(8)CARROLLTON(1)PEARLAND(10)NEW BRAUNFELS(14)RICHARDSON(2)AUBREY(6)WICHITA FALLS(34)SAN ANGELO(13)ALLEN(1)BRYAN(5)BASTROP(5)LEANDER(2)TEMPLE(5)HUNTSVILLE(25)LONGVIEW(5)CANYON LAKE(17)CEDAR PARK(4)HARLINGEN(3)MANSFIELD(1)BAYTOWN(6)BURLESON(2)CYPRESS(146)ROCKWALL(4)FLOWER MOUND(4)PHARR(1)LUFKIN(12)WYLIE(7)GREENVILLE(4)NORTH RICHLAND HILLS(1)MAGNOLIA(46)MIDLOTHIAN(3)FORNEY(4)VICTORIA(4)NACOGDOCHES(8)SEGUIN(4)ROWLETT(1)JOSHUA(2)RED OAK(2)PFLUGERVILLE(2)PRINCETON(2)EULESS(1)TEXAS CITY(2)HUTTO(3)CLINT(1)WAXAHACHIE(2)DESOTO(1)EAGLE PASS(3)PORT ARTHUR(1)MARION(2)CELINA(1)TEXARKANA(7)GRAPEVINE(1)GALVESTON(1)STAFFORD(2)KYLE(1)PARIS(2)CEDAR HILL(1)BEDFORD(1)SHERMAN(2)LIVINGSTON(45)TERRELL(7)