Water Quality in Texas
4,713 water systems • 1238 cities • EPA SDWIS Data
4,713
Water Systems
263,180
Total Violations
39,140
Health-Based Violations
32,406,355
Population Served
Overview
Texas has 4,713 active community water systems serving 32,406,355 people. These systems have accumulated 263,180 EPA Safe Drinking Water Act violations on record, of which 39,140 are health-based violations (meaning a contaminant exceeded safe levels).
Common contaminants found in violations: E. coli, TTHM, Disinfection Byproducts, Stage 2 DBP, Gross Alpha, Barium, Lead, HAA5, Total Haloacetic Acids (HAA5), Bromate.
Cities with Most Violations in Texas
| # | City | Violations | Health-Based | Water Systems | Population |
|---|---|---|---|---|---|
| 1 | Houston | 13,053 | 745 | 718 | 5,913,001 |
| 2 | Austin | 12,912 | 1147 | 616 | 1,788,805 |
| 3 | Des Peres | 12,153 | 1817 | 86 | 30,946 |
| 4 | Collinsville | 10,266 | 22 | 17 | 4,824 |
| 5 | Cypress | 5,741 | 873 | 144 | 75,711 |
| 6 | Wolfforth | 4,690 | 477 | 2 | 9,789 |
| 7 | Shallowater | 4,335 | 512 | 3 | 3,241 |
| 8 | Lubbock | 3,957 | 1353 | 14 | 276,842 |
| 9 | Huntington | 3,010 | 710 | 9 | 9,721 |
| 10 | Weatherford | 2,778 | 137 | 17 | 35,629 |
Largest Cities in Texas
| # | City | Population | Violations | Water Systems |
|---|---|---|---|---|
| 1 | Houston | 5,913,001 | 13,053 | 718 |
| 2 | San Antonio | 2,172,460 | 422 | 18 |
| 3 | Austin | 1,788,805 | 12,912 | 616 |
| 4 | Dallas | 1,438,601 | 520 | 27 |
| 5 | Fort Worth | 963,481 | 1,101 | 13 |
| 6 | El Paso | 756,263 | 1,048 | 11 |
| 7 | Arlington | 405,681 | 227 | 3 |
| 8 | Corpus Christi | 325,435 | 21 | 2 |
| 9 | Plano | 292,155 | 10 | 2 |
| 10 | Lubbock | 276,842 | 3,957 | 14 |
All Cities in Texas
| City | Population | Violations | Health Violations | Contaminants |
|---|---|---|---|---|
| Houston | 5,913,001 | 13,053 | 745 | Barium, Bromate, Chlorine Dioxide +12 more |
| San Antonio | 2,172,460 | 422 | 14 | Disinfection Byproducts, Lead, Stage 2 DBP |
| Austin | 1,788,805 | 12,912 | 1147 | Barium, Bromate, Chlorine Dioxide +12 more |
| Dallas | 1,438,601 | 520 | 120 | Bromate, Disinfection Byproducts, Selenium +2 more |
| Fort Worth | 963,481 | 1,101 | 21 | Bromate, Chlorine Dioxide, E. coli +2 more |
| El Paso | 756,263 | 1,048 | 161 | Barium, Disinfection Byproducts, E. coli +2 more |
| Arlington | 405,681 | 227 | 2 | Stage 2 DBP |
| Corpus Christi | 325,435 | 21 | 14 | E. coli, Gross Alpha, TTHM |
| Plano | 292,155 | 10 | 0 | |
| Lubbock | 276,842 | 3,957 | 1353 | Arsenic, Barium, Disinfection Byproducts +6 more |
| Laredo | 271,820 | 1,273 | 123 | Bromate, E. coli, Stage 2 DBP +2 more |
| Irving | 264,546 | 3 | 0 | |
| Edinburg | 256,419 | 42 | 9 | TTHM |
| Garland | 248,822 | 5 | 0 | |
| Frisco | 234,889 | 26 | 0 | |
| Mckinney | 227,407 | 10 | 0 | |
| Brownsville | 211,415 | 32 | 2 | Stage 2 DBP |
| Mission | 206,177 | 153 | 13 | Contaminant 1009, TTHM |
| Amarillo | 203,657 | 1,761 | 10 | Gross Alpha, HAA5, Stage 2 DBP |
| Tyler | 202,514 | 476 | 86 | E. coli, Gross Alpha, Surface Water Treatment +2 more |
| Grand Prairie | 202,173 | 398 | 4 | E. coli, Stage 2 DBP |
| Georgetown | 191,729 | 101 | 1 | Stage 2 DBP |
| Mcallen | 189,957 | 3 | 0 | |
| Sugar Land | 176,205 | 239 | 1 | Stage 2 DBP |
| Waco | 168,024 | 1,029 | 72 | Barium, Disinfection Byproducts, E. coli +1 more |
| the Woodlands | 165,267 | 386 | 21 | Disinfection Byproducts, E. coli, HAA5 +2 more |
| College Station | 165,159 | 39 | 1 | Stage 2 DBP |
| Midland | 164,405 | 500 | 114 | Barium, Disinfection Byproducts, E. coli +3 more |
| Round Rock | 161,539 | 114 | 7 | Disinfection Byproducts, Stage 2 DBP, TTHM |
| Killeen | 158,538 | 44 | 5 | Disinfection Byproducts, Stage 2 DBP |
| Pasadena | 153,662 | 64 | 0 | |
| Mesquite | 152,020 | 6 | 0 | |
| Denton | 151,438 | 410 | 2 | Stage 2 DBP |
| Conroe | 150,453 | 1,177 | 76 | Barium, Disinfection Byproducts, Gross Alpha +3 more |
| Lewisville | 140,905 | 30 | 1 | Stage 2 DBP |
| Odessa | 139,068 | 281 | 102 | E. coli, Selenium, Stage 2 DBP |
| Abilene | 137,705 | 173 | 38 | Disinfection Byproducts, E. coli, Gross Alpha +2 more |
| San Marcos | 137,288 | 313 | 96 | Bromate, Disinfection Byproducts, Fecal Coliform +2 more |
| Beaumont | 136,731 | 123 | 25 | Disinfection Byproducts, E. coli, TTHM |
| Carrollton | 136,170 | 1 | 0 | |
| Pearland | 132,991 | 2,185 | 6 | E. coli, Stage 2 DBP |
| League City | 128,682 | 163 | 130 | Barium, Stage 2 DBP |
| New Braunfels | 122,959 | 131 | 19 | Bromate, Contaminant 1011, Disinfection Byproducts +1 more |
| Richardson | 122,690 | 118 | 64 | HAA5, Stage 2 DBP, Total Organic Carbon |
| Aubrey | 119,078 | 260 | 1 | Stage 2 DBP |
| Wichita Falls | 118,265 | 990 | 824 | Contaminant 1006, Contaminant 1009, Disinfection Byproducts +5 more |
| San Angelo | 116,256 | 227 | 76 | Disinfection Byproducts, HAA5, Selenium +3 more |
| Bryan | 108,216 | 70 | 2 | Stage 2 DBP |
| Bastrop | 106,885 | 330 | 68 | Disinfection Byproducts, TTHM |
| Leander | 105,038 | 1,177 | 3 | Chlorine Dioxide, E. coli, Stage 2 DBP |
| Allen | 104,870 | 1 | 0 | |
| Temple | 103,642 | 71 | 45 | Bromate, Stage 2 DBP, TTHM |
| Longview | 103,492 | 378 | 13 | E. coli, Stage 2 DBP, TTHM +1 more |
| Huntsville | 102,453 | 624 | 207 | Barium, Chlorine Dioxide, Disinfection Byproducts +5 more |
| Canyon Lake | 93,402 | 1,066 | 30 | Chlorine Dioxide, Disinfection Byproducts, E. coli +2 more |
| Cedar Park | 93,224 | 61 | 0 | |
| Harlingen | 92,311 | 76 | 1 | Stage 2 DBP |
| Baytown | 88,573 | 1,494 | 4 | Stage 2 DBP |
| Burleson | 86,822 | 92 | 0 | |
| Flower Mound | 80,222 | 71 | 1 | Stage 2 DBP |
| Pharr | 79,715 | 5 | 0 | |
| Lufkin | 79,119 | 660 | 281 | Stage 2 DBP, TTHM, Total Haloacetic Acids (HAA5) |
| Mansfield | 77,142 | 10 | 0 | |
| Greenville | 77,019 | 32 | 1 | Stage 2 DBP |
| Wylie | 76,434 | 44 | 0 | |
| Cypress | 75,711 | 5,741 | 873 | Barium, Chlorine Dioxide, Disinfection Byproducts +6 more |
| Rockwall | 73,330 | 43 | 4 | Disinfection Byproducts, Stage 2 DBP |
| Midlothian | 72,423 | 36 | 4 | Contaminant 1009, Total Haloacetic Acids (HAA5) |
| North Richland Hills | 71,600 | 8 | 0 | |
| Nacogdoches | 70,577 | 304 | 21 | Chlorine Dioxide, Gross Alpha, Stage 2 DBP +1 more |
| Forney | 69,148 | 63 | 4 | Disinfection Byproducts |
| Victoria | 68,991 | 262 | 61 | Barium, Stage 2 DBP |
| Magnolia | 68,441 | 642 | 0 | |
| Seguin | 68,371 | 412 | 31 | E. coli, Stage 2 DBP, TTHM +1 more |
| Rowlett | 66,212 | 8 | 0 | |
| Joshua | 65,583 | 206 | 0 | |
| Red Oak | 65,191 | 23 | 0 | |
| Pflugerville | 63,464 | 139 | 29 | Bromate, TTHM |
| Princeton | 61,634 | 29 | 0 | |
| Euless | 61,601 | 6 | 0 | |
| Hutto | 59,726 | 26 | 10 | Gross Alpha, TTHM |
| Waxahachie | 59,149 | 314 | 192 | Lead, Nitrate, Stage 2 DBP +1 more |
| Clint | 59,049 | 31 | 0 | |
| Desoto | 57,999 | 15 | 0 | |
| Eagle Pass | 56,600 | 103 | 35 | Contaminant 1008, Contaminant 1009, E. coli +1 more |
| Port Arthur | 56,039 | 17 | 5 | E. coli |
| Marion | 54,468 | 48 | 2 | TTHM |
| Texas City | 54,357 | 11 | 4 | E. coli, Stage 2 DBP |
| Celina | 52,701 | 18 | 0 | |
| Galveston | 52,326 | 9 | 0 | |
| Stafford | 52,272 | 8 | 0 | |
| Kyle | 52,000 | 6 | 4 | TTHM |
| Cedar Hill | 50,904 | 5 | 0 | |
| Paris | 50,701 | 21 | 13 | E. coli, Total Haloacetic Acids (HAA5) |
| Grapevine | 50,631 | 10 | 0 | |
| Bedford | 49,900 | 4 | 0 | |
| Texarkana | 49,773 | 2,527 | 9 | E. coli, Gross Alpha, Stage 2 DBP |
| Sherman | 47,845 | 76 | 0 | |
| Katy | 47,623 | 307 | 44 | Contaminant 1006, Disinfection Byproducts, E. coli +2 more |
| Livingston | 47,492 | 1,676 | 672 | Barium, Chlorine Dioxide, Contaminant 1008 +6 more |
| Terrell | 46,524 | 242 | 11 | E. coli, Gross Alpha, Stage 2 DBP |
| Port Isabel | 46,341 | 13 | 0 | |
| Keller | 46,308 | 4 | 0 | |
| Haltom City | 46,260 | 5 | 0 | |
| San Dimas | 45,961 | 19 | 0 | |
| the Colony | 45,367 | 5 | 0 | |
| Friendswood | 43,319 | 9 | 0 | |
| Coppell | 43,193 | 6 | 0 | |
| Corsicana | 42,786 | 101 | 20 | Gross Alpha, Stage 2 DBP, TTHM +1 more |
| Rosenberg | 42,781 | 50 | 1 | Stage 2 DBP |
| Prosper | 42,598 | 3 | 0 | |
| Schertz | 41,948 | 9 | 0 | |
| Little Elm | 41,234 | 15 | 1 | Stage 2 DBP |
| Lancaster | 40,491 | 23 | 1 | Stage 2 DBP |
| Hurst | 40,454 | 3 | 2 | Gross Alpha |
| Farmers Branch | 40,246 | 9 | 0 | |
| Weslaco | 40,233 | 42 | 1 | Stage 2 DBP |
| Palestine | 40,122 | 89 | 9 | E. coli, TTHM |
| Richmond | 40,032 | 494 | 3 | E. coli, Stage 2 DBP |
| Coupland | 39,648 | 13 | 5 | TTHM |
| Duncanville | 39,413 | 8 | 0 | |
| Mabank | 39,189 | 94 | 21 | E. coli, Stage 2 DBP, TTHM +1 more |
| Porter | 38,417 | 262 | 38 | Disinfection Byproducts, HAA5, Stage 2 DBP |
| Belton | 38,333 | 120 | 36 | Disinfection Byproducts, E. coli, TTHM +1 more |
| Del Rio | 38,235 | 774 | 155 | Disinfection Byproducts, E. coli, HAA5 +2 more |
| Copperas Cove | 38,188 | 7 | 0 | |
| Cleburne | 37,639 | 54 | 1 | Stage 2 DBP |
| Athens | 37,381 | 1,150 | 155 | Disinfection Byproducts, E. coli, Stage 2 DBP +2 more |
| La Porte | 36,911 | 10 | 0 | |
| Ennis | 36,579 | 14 | 0 | |
| Fort Hood | 35,669 | 4 | 0 | |
| Weatherford | 35,629 | 2,778 | 137 | Disinfection Byproducts, E. coli, HAA5 +3 more |
| Navasota | 35,260 | 134 | 4 | E. coli, Stage 2 DBP |
| Niederwald | 34,893 | 20 | 7 | TTHM |
| Harker Heights | 34,834 | 63 | 21 | E. coli |
| Brownwood | 34,779 | 20 | 2 | Gross Alpha, Total Haloacetic Acids (HAA5) |
| Fate | 34,502 | 17 | 0 | |
| Deer Park | 34,495 | 15 | 1 | E. coli |
| Denison | 34,254 | 179 | 10 | Disinfection Byproducts, TTHM |
| Springtown | 34,235 | 108 | 79 | Contaminant 1009, Stage 2 DBP, TTHM +1 more |
| Fulshear | 34,000 | 4 | 0 | |
| Mount Pleasant | 33,879 | 21 | 0 | |
| Kingsville | 33,529 | 58 | 24 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| Sulphur Springs | 33,127 | 86 | 4 | E. coli, TTHM |
| Jacksonville | 32,330 | 206 | 59 | TTHM |
| Gatesville | 32,307 | 261 | 112 | Disinfection Byproducts, E. coli, Stage 2 DBP +2 more |
| Missouri City | 32,114 | 668 | 8 | E. coli, Stage 2 DBP |
| Kilgore | 32,012 | 173 | 28 | Stage 2 DBP, TTHM |
| Progreso | 31,697 | 96 | 65 | Barium, TTHM, Total Haloacetic Acids (HAA5) |
| Southlake | 31,684 | 61 | 2 | Gross Alpha |
| Horizon City | 31,542 | 3 | 0 | |
| Des Peres | 30,946 | 12,153 | 1817 | Barium, Bromate, Chlorine Dioxide +12 more |
| Henderson | 30,575 | 382 | 41 | Stage 2 DBP, TTHM, Total Haloacetic Acids (HAA5) |
| Dickinson | 30,477 | 41 | 4 | Disinfection Byproducts, E. coli, Stage 2 DBP |
| Lumberton | 30,462 | 5 | 0 | |
| San Juan | 30,000 | 10 | 0 | |
| Converse | 29,709 | 5 | 0 | |
| Angleton | 29,376 | 248 | 27 | Barium, Stage 2 DBP |
| Rio Hondo | 29,349 | 381 | 115 | Bromate, Contaminant 1008, E. coli +3 more |
| Sachse | 29,042 | 1 | 0 | |
| Melissa | 28,694 | 17 | 3 | E. coli, Gross Alpha |
| Balch Springs | 28,300 | 6 | 1 | Stage 2 DBP |
| Marshall | 28,120 | 341 | 19 | E. coli, Gross Alpha, Stage 2 DBP +1 more |
| Lake Jackson | 27,992 | 272 | 3 | E. coli, Stage 2 DBP |
| Spring | 27,940 | 398 | 35 | E. coli, Stage 2 DBP, TTHM |
| Alvin | 27,884 | 270 | 6 | E. coli, Stage 2 DBP |
| Pleasanton | 27,606 | 56 | 0 | |
| Big Spring | 27,282 | 64 | 43 | E. coli, TTHM |
| Adkins | 27,019 | 32 | 0 | |
| Gainesville | 26,645 | 86 | 12 | Stage 2 DBP, TTHM, Total Haloacetic Acids (HAA5) |
| Orange | 26,596 | 67 | 1 | Stage 2 DBP |
| Azle | 26,128 | 174 | 6 | Gross Alpha, Stage 2 DBP, TTHM |
| Colleyville | 26,057 | 4 | 1 | Gross Alpha |
| Kerrville | 25,866 | 883 | 272 | E. coli, HAA5, Stage 2 DBP +2 more |
| Buda | 25,824 | 77 | 0 | |
| Lytle | 25,800 | 31 | 2 | E. coli, Stage 2 DBP |
| Boerne | 25,420 | 164 | 34 | Lead, Nitrate, Stage 2 DBP +1 more |
| Portland | 25,266 | 393 | 50 | Disinfection Byproducts, HAA5, Stage 2 DBP +1 more |
| Lindale | 25,123 | 31 | 1 | Stage 2 DBP |
| Wellborn | 25,065 | 15 | 10 | Total Haloacetic Acids (HAA5) |
| Cleveland | 24,949 | 75 | 6 | Disinfection Byproducts, Gross Alpha, Stage 2 DBP |
| Stephenville | 24,870 | 297 | 23 | HAA5, Haloacetic Acids, Stage 2 DBP +1 more |
| Jbsa Lackland | 24,557 | 30 | 0 | |
| Benbrook | 24,437 | 100 | 0 | |
| Tool | 24,414 | 16 | 0 | |
| San Benito | 24,250 | 8 | 3 | E. coli, TTHM |
| Gilmer | 23,970 | 56 | 4 | Gross Alpha, Stage 2 DBP |
| Anna | 23,960 | 37 | 3 | Stage 2 DBP, TTHM |
| Saginaw | 23,890 | 4 | 0 | |
| Watauga | 23,660 | 1 | 0 | |
| Jasper | 23,574 | 324 | 141 | Contaminant 1011, Disinfection Byproducts, Stage 2 DBP +2 more |
| Nederland | 23,461 | 35 | 24 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| Plainview | 23,225 | 847 | 34 | Disinfection Byproducts, Selenium, Stage 2 DBP |
| Corinth | 23,213 | 5 | 0 | |
| Granbury | 23,093 | 1,092 | 19 | Chromium, Disinfection Byproducts, E. coli +1 more |
| Giddings | 22,728 | 236 | 6 | Disinfection Byproducts, Stage 2 DBP |
| Sanger | 22,616 | 186 | 0 | |
| Crockett | 22,370 | 193 | 122 | E. coli, Stage 2 DBP, TTHM +1 more |
| Mineral Wells | 22,285 | 66 | 10 | Contaminant 1009, Stage 2 DBP, TTHM |
| Royse City | 22,217 | 19 | 1 | Stage 2 DBP |
| Roma | 21,687 | 337 | 69 | Contaminant 1009, E. coli, Stage 2 DBP +1 more |
| Argyle | 21,471 | 46 | 0 | |
| Clarendon | 21,367 | 77 | 2 | Stage 2 DBP, TTHM |
| Bellaire | 21,348 | 7 | 0 | |
| Alamo | 21,065 | 26 | 0 | |
| Alice | 21,054 | 177 | 91 | Barium, HAA5, Haloacetic Acids +1 more |
| New Waverly | 21,045 | 153 | 27 | Disinfection Byproducts, Stage 2 DBP, TTHM |
| Brenham | 21,029 | 116 | 61 | Contaminant 1009, Stage 2 DBP, TTHM +1 more |
| Lavernia | 20,766 | 1 | 0 | |
| Willis | 20,657 | 275 | 19 | Disinfection Byproducts, E. coli, TTHM |
| Uvalde | 20,652 | 205 | 0 | |
| Taylor | 20,622 | 6 | 1 | Gross Alpha |
| Crowley | 20,513 | 28 | 3 | Gross Alpha, Stage 2 DBP |
| Cibolo | 20,331 | 11 | 0 | |
| Channelview | 20,324 | 23 | 5 | Gross Alpha, TTHM |
| Pittsburg | 20,229 | 117 | 5 | Stage 2 DBP, TTHM |
| Wills Point | 20,205 | 75 | 13 | E. coli, Total Haloacetic Acids (HAA5) |
| Seagoville | 20,156 | 16 | 1 | Stage 2 DBP |
| Universal City | 20,119 | 3 | 0 | |
| Mineola | 19,854 | 14 | 0 | |
| New Boston | 19,736 | 19 | 1 | Stage 2 DBP |
| Manor | 19,657 | 15 | 0 | |
| Floresville | 19,628 | 39 | 1 | Stage 2 DBP |
| Uhland | 19,609 | 15 | 2 | Gross Alpha |
| Gonzales | 19,522 | 46 | 0 | |
| Sheppard Afb | 19,500 | 7 | 0 | |
| Crystal Beach | 19,476 | 8 | 0 | |
| Robstown | 19,370 | 67 | 32 | Stage 2 DBP, TTHM |
| West University Place | 19,200 | 10 | 0 | |
| Murphy | 19,185 | 9 | 0 | |
| Commerce | 19,067 | 115 | 46 | Contaminant 1041, E. coli, Stage 2 DBP +2 more |
| Pampa | 19,044 | 17 | 1 | Stage 2 DBP |
| Glenn Heights | 18,943 | 99 | 0 | |
| New Caney | 18,925 | 208 | 13 | Disinfection Byproducts |
| Rio Grande | 18,912 | 84 | 8 | E. coli, Gross Alpha |
| Hallsville | 18,804 | 31 | 9 | TTHM |
| Lockhart | 18,800 | 1 | 0 | |
| Cameron | 18,758 | 310 | 102 | E. coli, Gross Alpha, Stage 2 DBP +1 more |
| Bay City | 18,527 | 159 | 21 | Barium, E. coli, Stage 2 DBP |
| Tomball | 18,524 | 75 | 16 | Disinfection Byproducts, E. coli, HAA5 +1 more |
| White Settlement | 18,522 | 52 | 9 | Disinfection Byproducts, E. coli, HAA5 |
| Mount Vernon | 18,457 | 14 | 8 | TTHM, Total Haloacetic Acids (HAA5) |
| Whitehouse | 18,346 | 10 | 8 | Gross Alpha, TTHM |
| Lake Dallas | 18,237 | 7 | 0 | |
| Silsbee | 18,098 | 756 | 16 | Disinfection Byproducts, E. coli, Gross Alpha +1 more |
| Mercedes | 17,858 | 198 | 12 | Disinfection Byproducts, Stage 2 DBP, TTHM |
| Kempner | 17,721 | 61 | 45 | TTHM, Total Haloacetic Acids (HAA5) |
| Graham | 17,651 | 85 | 17 | Contaminant 1008, Stage 2 DBP, TTHM |
| Addison | 17,403 | 102 | 2 | E. coli, Stage 2 DBP |
| South Houston | 17,397 | 0 | 0 | |
| Itasca | 17,387 | 347 | 46 | Lead, Stage 2 DBP, TTHM |
| Rockdale | 17,387 | 62 | 9 | TTHM |
| Zapata | 17,075 | 330 | 72 | E. coli, Stage 2 DBP, TTHM +1 more |
| Hewitt | 16,978 | 10 | 0 | |
| Vidor | 16,653 | 1,295 | 514 | Barium, E. coli, TTHM +1 more |
| Hemphill | 16,605 | 382 | 160 | Chlorine Dioxide, E. coli, Stage 2 DBP +2 more |
| Highland Village | 16,500 | 3 | 0 | |
| Groves | 16,452 | 10 | 7 | E. coli, Fecal Coliform, Stage 2 DBP |
| Hereford | 16,438 | 972 | 8 | E. coli, Gross Alpha, HAA5 +1 more |
| Crosby | 16,275 | 579 | 2 | Stage 2 DBP |
| Canyon | 16,183 | 216 | 2 | Selenium |
| Donna | 16,176 | 5 | 0 | |
| Pinehurst | 16,145 | 966 | 27 | Disinfection Byproducts, Stage 2 DBP |
| Stowell | 16,092 | 37 | 8 | E. coli |
| Humble | 16,045 | 6 | 0 | |
| Lavon | 15,822 | 1 | 0 | |
| Dayton | 15,772 | 496 | 1 | Stage 2 DBP |
| Sweetwater | 15,374 | 71 | 1 | Chlorine Dioxide |
| La Marque | 15,154 | 7 | 0 | |
| Freeport | 15,123 | 841 | 343 | Disinfection Byproducts, E. coli, Stage 2 DBP +2 more |
| Devine | 15,097 | 45 | 19 | Contaminant 1094, Disinfection Byproducts, HAA5 +1 more |
| Port Neches | 14,994 | 6 | 2 | Total Haloacetic Acids (HAA5) |
| Port Aransas | 14,880 | 14 | 12 | TTHM |
| Hidalgo | 14,800 | 29 | 1 | Stage 2 DBP |
| Kaufman | 14,758 | 63 | 2 | E. coli, Stage 2 DBP |
| Borger | 14,705 | 41 | 1 | Stage 2 DBP |
| Dumas | 14,565 | 24 | 4 | E. coli, Stage 2 DBP |
| Rockport | 14,354 | 22 | 4 | Stage 2 DBP, TTHM |
| Andrews | 14,331 | 502 | 184 | Barium, E. coli, HAA5 +2 more |
| Mexia | 14,270 | 69 | 6 | Stage 2 DBP |
| Atascosa | 13,905 | 61 | 33 | HAA5, Selenium |
| Van Alstyne | 13,750 | 103 | 0 | |
| Beeville | 13,749 | 243 | 57 | E. coli, Stage 2 DBP, TTHM +1 more |
| Webster | 13,710 | 1 | 0 | |
| Forest Hill | 13,701 | 4 | 0 | |
| Trophy Club | 13,649 | 0 | 0 | |
| Kingsland | 13,587 | 11 | 2 | Gross Alpha |
| Seabrook | 13,560 | 1 | 0 | |
| El Campo | 13,535 | 62 | 4 | Disinfection Byproducts, Stage 2 DBP |
| Horseshoe Bay | 13,476 | 104 | 38 | Bromate, E. coli, TTHM +1 more |
| Dripping Springs | 13,347 | 373 | 57 | Disinfection Byproducts, Stage 2 DBP, TTHM |
| Lantana | 13,325 | 18 | 0 | |
| Yancey | 13,287 | 7 | 0 | |
| Montgomery | 13,224 | 214 | 22 | Disinfection Byproducts, HAA5, Stage 2 DBP +1 more |
| La Grange | 13,216 | 122 | 36 | Barium, TTHM |
| Elgin | 13,188 | 8 | 0 | |
| Mont Belvieu | 13,153 | 202 | 14 | Disinfection Byproducts, TTHM |
| Jarrell | 13,131 | 25 | 0 | |
| Pecos | 12,916 | 13 | 0 | |
| Levelland | 12,872 | 666 | 303 | Barium, E. coli, Lead +1 more |
| Winnsboro | 12,725 | 84 | 4 | Disinfection Byproducts |
| Robinson | 12,650 | 3 | 1 | TTHM |
| Fort Stockton | 12,554 | 85 | 66 | HAA5, Stage 2 DBP, Total Organic Carbon |
| Prairie View | 12,550 | 11 | 1 | Stage 2 DBP |
| Bonham | 12,456 | 36 | 0 | |
| Gladewater | 12,079 | 145 | 62 | Disinfection Byproducts, E. coli, Stage 2 DBP +2 more |
| Port Lavaca | 12,025 | 156 | 75 | TTHM |
| Snyder | 11,974 | 94 | 0 | |
| Center | 11,915 | 452 | 33 | TTHM, Total Haloacetic Acids (HAA5) |
| Raymondville | 11,788 | 101 | 32 | Stage 2 DBP, TTHM |
| Fredericksburg | 11,773 | 220 | 78 | HAA5, Selenium, Stage 2 DBP +1 more |
| Alvarado | 11,723 | 429 | 0 | |
| Trinity | 11,650 | 1,217 | 137 | Chlorine Dioxide, Disinfection Byproducts, E. coli +3 more |
| Lago Vista | 11,632 | 82 | 12 | E. coli, Stage 2 DBP, TTHM |
| San Leon | 11,622 | 22 | 0 | |
| Waller | 11,506 | 243 | 112 | Barium, Disinfection Byproducts, HAA5 +2 more |
| Clyde | 11,485 | 280 | 206 | Contaminant 1041, E. coli, TTHM +1 more |
| Selma | 11,418 | 9 | 0 | |
| Marlin | 11,320 | 257 | 206 | Barium, Bromate, E. coli +2 more |
| Keene | 11,317 | 1,214 | 25 | Contaminant 1041, Disinfection Byproducts, Stage 2 DBP |
| Vernon | 11,252 | 133 | 86 | Selenium, Stage 2 DBP |
| Scurry | 11,169 | 14 | 0 | |
| Lucas | 11,117 | 28 | 1 | Disinfection Byproducts |
| Fairview | 11,100 | 16 | 2 | Gross Alpha |
| Hillsboro | 11,083 | 85 | 5 | Stage 2 DBP |
| Splendora | 11,069 | 872 | 2 | Stage 2 DBP |
| Hondo | 11,044 | 41 | 1 | Stage 2 DBP |
| Karnes City | 11,031 | 43 | 25 | Stage 2 DBP, TTHM |
| Whitesboro | 10,996 | 147 | 0 | |
| Burkburnett | 10,978 | 21 | 12 | Disinfection Byproducts, Selenium |
| Carthage | 10,958 | 167 | 88 | E. coli, Stage 2 DBP, TTHM +1 more |
| Rusk | 10,798 | 73 | 0 | |
| Ingleside | 10,764 | 64 | 1 | Stage 2 DBP |
| Bacliff | 10,739 | 7 | 0 | |
| Quinlan | 10,735 | 629 | 4 | Gross Alpha, Stage 2 DBP |
| Clarksville | 10,703 | 68 | 32 | Stage 2 DBP, TTHM, Total Haloacetic Acids (HAA5) |
| Breckenridge | 10,669 | 25 | 6 | E. coli, Stage 2 DBP |
| Bellmead | 10,664 | 31 | 4 | Barium |
| Clute | 10,604 | 17 | 0 | |
| Canton | 10,530 | 126 | 6 | E. coli |
| Lakeway | 10,512 | 1 | 0 | |
| Galena Park | 10,487 | 9 | 3 | Gross Alpha, Stage 2 DBP |
| Holliday | 10,434 | 10 | 0 | |
| Northlake | 10,430 | 15 | 0 | |
| Coldspring | 10,375 | 38 | 2 | HAA5 |
| Mauriceville | 10,374 | 12 | 0 | |
| Elkhart | 10,188 | 180 | 10 | Disinfection Byproducts, E. coli, Stage 2 DBP |
| Savoy | 10,164 | 116 | 65 | Barium, Selenium, Stage 2 DBP |
| Highlands | 10,162 | 95 | 13 | Disinfection Byproducts, Stage 2 DBP, Total Haloacetic Acids (HAA5) |
| Roanoke | 10,127 | 15 | 2 | Gross Alpha |
| Liberty Hill | 10,074 | 117 | 8 | HAA5, Total Organic Carbon |
| Tuscola | 10,068 | 35 | 24 | TTHM |
| Salado | 10,056 | 3 | 0 | |
| Marble Falls | 9,986 | 135 | 20 | Disinfection Byproducts, E. coli, TTHM |
| Bridgeport | 9,947 | 151 | 102 | Stage 2 DBP, TTHM, Total Haloacetic Acids (HAA5) |
| Bridge City | 9,904 | 39 | 12 | TTHM |
| Heath | 9,890 | 18 | 0 | |
| Fairfield | 9,855 | 177 | 4 | Disinfection Byproducts, E. coli |
| Fair Oaks Ranch | 9,834 | 30 | 0 | |
| Marquez | 9,831 | 106 | 3 | Stage 2 DBP |
| Cuero | 9,807 | 0 | 0 | |
| Josephine | 9,800 | 7 | 0 | |
| Wolfforth | 9,789 | 4,690 | 477 | Barium, Lead |
| Lamesa | 9,753 | 435 | 244 | Barium, Disinfection Byproducts, Gross Alpha +4 more |
| Huntington | 9,721 | 3,010 | 710 | Chlorine Dioxide, Disinfection Byproducts, Stage 2 DBP +2 more |
| Teague | 9,702 | 25 | 1 | Stage 2 DBP |
| Taft | 9,675 | 37 | 11 | Stage 2 DBP, TTHM |
| Rio Grande City | 9,639 | 43 | 1 | Stage 2 DBP |
| Jacinto City | 9,613 | 1 | 0 | |
| Blue Ridge | 9,595 | 46 | 1 | Stage 2 DBP |
| Pollok | 9,592 | 18 | 2 | Gross Alpha |
| West Lake Hills | 9,589 | 21 | 0 | |
| La Grulla | 9,500 | 104 | 25 | E. coli, Stage 2 DBP |
| Fabens | 9,444 | 3 | 0 | |
| Woodway | 9,383 | 10 | 1 | TTHM |
| Liberty | 9,344 | 19 | 0 | |
| Crandall | 9,337 | 39 | 6 | Gross Alpha, Stage 2 DBP |
| Monahans | 9,307 | 8 | 0 | |
| Coleman | 9,136 | 80 | 31 | Contaminant 1041, Disinfection Byproducts, Stage 2 DBP +2 more |
| Fort Woth | 9,000 | 7 | 1 | Gross Alpha |
| Pearsall | 8,985 | 18 | 2 | Gross Alpha |
| Olmito | 8,952 | 18 | 3 | TTHM |
| Wharton | 8,861 | 195 | 1 | Gross Alpha |
| Manvel | 8,859 | 411 | 2 | Stage 2 DBP |
| Sunnyvale | 8,839 | 16 | 0 | |
| Live Oak | 8,724 | 1 | 0 | |
| Brownfield | 8,652 | 27 | 2 | E. coli |
| Hitchcock | 8,537 | 117 | 33 | Disinfection Byproducts, TTHM |
| Richland Hills | 8,505 | 8 | 0 | |
| Perryton | 8,492 | 12 | 2 | Disinfection Byproducts |
| Jonestown | 8,327 | 477 | 10 | Disinfection Byproducts, Stage 2 DBP, TTHM |
| Millsap | 8,278 | 22 | 2 | TTHM |
| Dalhart | 8,256 | 7 | 0 | |
| Orangefield | 8,231 | 36 | 5 | Disinfection Byproducts, Stage 2 DBP |
| Windcrest | 8,154 | 4 | 0 | |
| Kirby | 8,142 | 11 | 0 | |
| Plantersville | 8,141 | 143 | 25 | Gross Alpha, HAA5, TTHM +1 more |
| Aransas Pass | 8,088 | 10 | 1 | Stage 2 DBP |
| Graford | 8,087 | 50 | 18 | E. coli, Stage 2 DBP, TTHM |
| Woodville | 8,026 | 108 | 9 | Chlorine Dioxide, Disinfection Byproducts |
| Quitman | 8,017 | 3 | 0 | |
| Pilot Point | 7,920 | 52 | 2 | Chlorine Dioxide, Stage 2 DBP |
| Nolanville | 7,836 | 14 | 0 | |
| Hawley | 7,830 | 0 | 0 | |
| Leon Valley | 7,794 | 235 | 0 | |
| Jersey Village | 7,792 | 11 | 0 | |
| Crystal City | 7,778 | 84 | 0 | |
| River Oaks | 7,691 | 70 | 50 | Gross Alpha, TTHM, Total Haloacetic Acids (HAA5) |
| Alba | 7,686 | 29 | 4 | TTHM |
| Kennedale | 7,670 | 43 | 0 | |
| Madisonville | 7,634 | 21 | 0 | |
| Burnet | 7,623 | 199 | 81 | Disinfection Byproducts, HAA5, Selenium +2 more |
| Richwood | 7,605 | 26 | 0 | |
| Zephyr | 7,575 | 13 | 6 | TTHM |
| Luling | 7,530 | 50 | 3 | Disinfection Byproducts, E. coli |
| Sealy | 7,502 | 22 | 1 | E. coli |
| Granite Shoals | 7,470 | 191 | 70 | Disinfection Byproducts, E. coli, Gross Alpha +2 more |
| Emory | 7,451 | 76 | 16 | Gross Alpha, TTHM |
| Farmersville | 7,427 | 64 | 9 | Disinfection Byproducts, Stage 2 DBP |
| Castroville | 7,418 | 94 | 2 | E. coli |
| Santa Fe | 7,387 | 337 | 14 | Stage 2 DBP, TTHM |
| Seminole | 7,386 | 275 | 234 | Barium, Lead |
| Carrizo Springs | 7,372 | 325 | 5 | Disinfection Byproducts, Stage 2 DBP |
| Lampasas | 7,346 | 112 | 23 | Disinfection Byproducts, Gross Alpha, Stage 2 DBP +1 more |
| Glen Rose | 7,341 | 357 | 73 | TTHM, Total Haloacetic Acids (HAA5) |
| Mc Gregor | 7,331 | 90 | 1 | TTHM |
| Diana | 7,320 | 45 | 0 | |
| Douglass | 7,280 | 64 | 4 | TTHM |
| Lacy Lakeview | 7,275 | 25 | 0 | |
| Linden | 7,244 | 965 | 3 | Stage 2 DBP, TTHM |
| White Oak | 7,239 | 25 | 0 | |
| La Feria | 7,226 | 46 | 13 | E. coli, TTHM |
| Dyess Afb | 7,183 | 11 | 0 | |
| Decatur | 7,183 | 180 | 12 | E. coli, TTHM |
| Comanche | 7,109 | 86 | 52 | Disinfection Byproducts, E. coli, Stage 2 DBP +2 more |
| West Columbia | 7,100 | 50 | 1 | Stage 2 DBP |
| Buffalo | 7,099 | 208 | 4 | E. coli, Stage 2 DBP |
| Iowa Park | 7,072 | 9 | 0 | |
| Whitney | 7,041 | 63 | 3 | Stage 2 DBP |
| Bellville | 6,968 | 374 | 7 | E. coli, Stage 2 DBP |
| Anthony | 6,955 | 121 | 15 | Barium, Stage 2 DBP |
| Riverside | 6,954 | 224 | 130 | Stage 2 DBP, TTHM |
| Montalba | 6,882 | 57 | 8 | TTHM |
| Merkel | 6,871 | 84 | 44 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| Los Fresnos | 6,855 | 140 | 33 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| San Diego | 6,836 | 54 | 24 | Barium, Stage 2 DBP |
| Stockdale | 6,757 | 8 | 1 | Stage 2 DBP |
| Clifton | 6,744 | 185 | 25 | Lead, Stage 2 DBP, TTHM |
| Wilmer | 6,690 | 42 | 1 | E. coli |
| Hempstead | 6,687 | 21 | 5 | Barium |
| West | 6,590 | 172 | 2 | TTHM |
| Powell | 6,546 | 4 | 2 | TTHM |
| Littlefield | 6,534 | 82 | 1 | Stage 2 DBP |
| Wimberley | 6,514 | 228 | 6 | HAA5, Stage 2 DBP |
| Onalaska | 6,489 | 16 | 1 | Stage 2 DBP |
| Parker | 6,486 | 9 | 0 | |
| Kenedy | 6,454 | 34 | 7 | Barium, Stage 2 DBP |
| Bowie | 6,347 | 38 | 6 | Disinfection Byproducts, Stage 2 DBP |
| Bullard | 6,327 | 39 | 1 | Stage 2 DBP |
| Frankston | 6,309 | 178 | 3 | Gross Alpha, Stage 2 DBP |
| Everman | 6,279 | 20 | 0 | |
| Grand Saline | 6,243 | 289 | 1 | Stage 2 DBP |
| Jefferson | 6,209 | 82 | 34 | Stage 2 DBP, TTHM |
| Ben Wheeler | 6,204 | 21 | 1 | Stage 2 DBP |
| Celeste | 6,182 | 35 | 0 | |
| Scottsville | 6,164 | 45 | 6 | TTHM |
| Alpine | 6,145 | 339 | 2 | E. coli, Stage 2 DBP |
| Moody | 6,145 | 38 | 2 | Stage 2 DBP |
| Hardin | 6,132 | 0 | 0 | |
| Sinton | 6,113 | 82 | 1 | Stage 2 DBP |
| Childress | 6,105 | 55 | 10 | Disinfection Byproducts, Gross Alpha, Stage 2 DBP +1 more |
| Groesbeck | 6,101 | 442 | 159 | Bromate, Disinfection Byproducts, E. coli +3 more |
| Krum | 6,062 | 50 | 0 | |
| Van | 6,027 | 23 | 0 | |
| Brownsboro | 6,009 | 12 | 1 | Stage 2 DBP |
| Palacios | 6,005 | 18 | 2 | Gross Alpha, Stage 2 DBP |
| Cut and Shoot | 6,000 | 3 | 0 | |
| Edna | 5,987 | 7 | 0 | |
| Yoakum | 5,965 | 9 | 1 | Gross Alpha |
| Wake Village | 5,945 | 7 | 0 | |
| Hutchins | 5,902 | 2 | 0 | |
| Spurger | 5,872 | 16 | 0 | |
| Slaton | 5,858 | 8 | 3 | Gross Alpha |
| Honey Grove | 5,824 | 38 | 0 | |
| Maxwell | 5,823 | 91 | 67 | TTHM |
| Cotulla | 5,814 | 138 | 2 | Stage 2 DBP |
| Garciasville | 5,793 | 10 | 1 | Stage 2 DBP |
| Eddy | 5,769 | 4 | 0 | |
| Fritch | 5,736 | 48 | 1 | Stage 2 DBP |
| Jourdanton | 5,721 | 102 | 3 | Stage 2 DBP, Total Organic Carbon |
| Whitewright | 5,721 | 14 | 1 | Stage 2 DBP |
| Kermit | 5,708 | 27 | 1 | Stage 2 DBP |
| Surfside Beach | 5,697 | 458 | 226 | Barium, Disinfection Byproducts, E. coli +1 more |
| Brookshire | 5,694 | 17 | 0 | |
| Post | 5,687 | 101 | 40 | Stage 2 DBP, TTHM |
| Buna | 5,594 | 45 | 1 | Stage 2 DBP |
| Yantis | 5,570 | 37 | 9 | Stage 2 DBP, TTHM |
| Shelbyville | 5,567 | 259 | 188 | TTHM, Total Haloacetic Acids (HAA5) |
| Presidio | 5,514 | 16 | 1 | Stage 2 DBP |
| Elsa | 5,500 | 75 | 0 | |
| Denver City | 5,500 | 6 | 0 | |
| Brady | 5,434 | 1,222 | 1157 | Disinfection Byproducts, HAA5, Total Organic Carbon |
| Atlanta | 5,418 | 29 | 13 | Stage 2 DBP, TTHM |
| Seymour | 5,414 | 17 | 0 | |
| Bandera | 5,397 | 110 | 1 | Stage 2 DBP |
| Hebbronville | 5,397 | 160 | 139 | Barium |
| Franklin | 5,273 | 27 | 0 | |
| Hooks | 5,246 | 27 | 1 | Stage 2 DBP |
| Goodfellow Afb | 5,241 | 20 | 4 | Disinfection Byproducts, TTHM |
| Blum | 5,223 | 53 | 4 | Stage 2 DBP |
| Alto | 5,221 | 237 | 9 | Stage 2 DBP, TTHM |
| Diboll | 5,210 | 19 | 1 | Stage 2 DBP |
| San Augustine | 5,197 | 231 | 142 | Stage 2 DBP, TTHM, Total Haloacetic Acids (HAA5) |
| China Spring | 5,196 | 160 | 0 | |
| Muleshoe | 5,158 | 8 | 0 | |
| Albany | 5,154 | 83 | 41 | TTHM |
| Leonard | 5,136 | 44 | 0 | |
| Winters | 5,111 | 242 | 25 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| Garden Ridge | 5,100 | 16 | 0 | |
| Glendale | 5,088 | 1,076 | 1 | Stage 2 DBP |
| Chandler | 5,072 | 237 | 3 | Stage 2 DBP |
| Savannah | 5,061 | 11 | 0 | |
| Hubbard | 5,034 | 41 | 2 | Stage 2 DBP |
| Lorena | 5,031 | 39 | 9 | Stage 2 DBP, TTHM |
| Aledo | 5,010 | 16 | 1 | Stage 2 DBP |
| Mathis | 5,001 | 98 | 65 | Stage 2 DBP, TTHM, Total Haloacetic Acids (HAA5) |
| Morgans Point Resort | 5,000 | 26 | 20 | TTHM |
| Meadows Place | 5,000 | 6 | 0 | |
| Hearne | 4,959 | 13 | 0 | |
| Bells | 4,936 | 19 | 1 | Stage 2 DBP |
| Willow Park | 4,936 | 25 | 2 | E. coli |
| Cooper | 4,913 | 29 | 13 | E. coli, Stage 2 DBP |
| Ranger | 4,906 | 305 | 107 | Bromate, Contaminant 1008, Contaminant 1009 +5 more |
| Smithville | 4,901 | 14 | 1 | E. coli |
| Columbus | 4,885 | 129 | 7 | E. coli, Gross Alpha, Stage 2 DBP |
| Crawford | 4,829 | 127 | 9 | TTHM |
| Collinsville | 4,824 | 10,266 | 22 | Chlorine Dioxide, E. coli, Gross Alpha +1 more |
| Golden | 4,821 | 2 | 0 | |
| Como | 4,797 | 67 | 0 | |
| Lake Worth | 4,797 | 73 | 33 | HAA5, Stage 2 DBP, Total Organic Carbon |
| Hudson Oaks | 4,786 | 188 | 7 | Disinfection Byproducts, Stage 2 DBP |
| Arp | 4,723 | 367 | 309 | Contaminant 1094, Disinfection Byproducts, TTHM +1 more |
| Falfurrias | 4,698 | 92 | 39 | Arsenic, E. coli, Stage 2 DBP |
| Caddo Mills | 4,688 | 21 | 2 | Gross Alpha |
| Friona | 4,653 | 11 | 2 | Contaminant 2946, Stage 2 DBP |
| Saratoga | 4,630 | 31 | 1 | Disinfection Byproducts |
| Timpson | 4,540 | 244 | 110 | Chlorine Dioxide, Disinfection Byproducts, Stage 2 DBP +1 more |
| Ovilla | 4,532 | 2 | 0 | |
| Valley View | 4,515 | 46 | 1 | Stage 2 DBP |
| Caldwell | 4,511 | 139 | 10 | Disinfection Byproducts, Gross Alpha, Stage 2 DBP |
| Dilley | 4,505 | 24 | 4 | E. coli, Stage 2 DBP |
| Tulia | 4,501 | 16 | 0 | |
| Holland | 4,489 | 9 | 1 | Stage 2 DBP |
| Winona | 4,446 | 196 | 20 | Stage 2 DBP, TTHM |
| Three Rivers | 4,428 | 15 | 0 | |
| Justin | 4,409 | 10 | 0 | |
| Jacksboro | 4,397 | 12 | 5 | Disinfection Byproducts, TTHM, Total Haloacetic Acids (HAA5) |
| Dimmitt | 4,393 | 0 | 0 | |
| Eastland | 4,379 | 108 | 42 | Disinfection Byproducts, Stage 2 DBP, TTHM +1 more |
| Copeville | 4,375 | 5 | 0 | |
| Redwater | 4,356 | 24 | 1 | Gross Alpha |
| Elmendorf | 4,317 | 857 | 4 | E. coli, Stage 2 DBP |
| Daingerfield | 4,220 | 34 | 4 | Total Haloacetic Acids (HAA5) |
| Nevada | 4,218 | 4 | 0 | |
| Shenandoah | 4,172 | 3 | 0 | |
| Nassau Bay | 4,170 | 4 | 0 | |
| Malakoff | 4,158 | 178 | 37 | E. coli, Fecal Coliform, Stage 2 DBP +2 more |
| Beckville | 4,128 | 68 | 20 | E. coli, TTHM |
| Harleton | 4,107 | 31 | 7 | Stage 2 DBP, TTHM |
| Italy | 4,097 | 58 | 0 | |
| Dublin | 4,072 | 515 | 59 | Disinfection Byproducts, Stage 2 DBP, TTHM |
| Waskom | 4,021 | 34 | 0 | |
| Laughlin Afb | 4,010 | 5 | 0 | |
| El Lago | 4,002 | 17 | 8 | Endrin |
| Edgecliff Village | 3,992 | 19 | 0 | |
| Colorado City | 3,991 | 19 | 2 | Disinfection Byproducts, Stage 2 DBP |
| Millersview | 3,987 | 350 | 274 | Disinfection Byproducts, E. coli, HAA5 +3 more |
| San Saba | 3,984 | 202 | 88 | Total Organic Carbon |
| Sweeny | 3,978 | 23 | 3 | Disinfection Byproducts |
| Detroit | 3,898 | 123 | 28 | Disinfection Byproducts, Stage 2 DBP, TTHM +1 more |
| Milano | 3,891 | 0 | 0 | |
| Ballinger | 3,862 | 75 | 48 | E. coli, Stage 2 DBP, TTHM |
| Purdon | 3,852 | 19 | 0 | |
| Gordon | 3,826 | 92 | 49 | Contaminant 1009, Disinfection Byproducts, E. coli +3 more |
| Nash | 3,818 | 12 | 0 | |
| Tatum | 3,807 | 296 | 67 | Stage 2 DBP, TTHM |
| Ozona | 3,800 | 10 | 0 | |
| Stamford | 3,786 | 150 | 107 | Disinfection Byproducts, Stage 2 DBP, TTHM |
| Troup | 3,782 | 47 | 2 | Stage 2 DBP |
| Nocona | 3,770 | 25 | 1 | Stage 2 DBP |
| Fruitvale | 3,747 | 2 | 0 | |
| Deweyville | 3,729 | 142 | 0 | |
| Comfort | 3,678 | 1,370 | 291 | HAA5, Stage 2 DBP, Total Organic Carbon |
| Bertram | 3,665 | 14 | 0 | |
| Rancho Viejo | 3,644 | 17 | 8 | E. coli |
| Haslet | 3,627 | 420 | 0 | |
| Gordonville | 3,615 | 52 | 2 | E. coli, Stage 2 DBP |
| Mart | 3,613 | 154 | 15 | Barium |
| Shepherd | 3,612 | 46 | 3 | Chlorine Dioxide, E. coli, Stage 2 DBP |
| Tornillo | 3,600 | 46 | 42 | Barium |
| Point | 3,600 | 297 | 16 | Disinfection Byproducts, E. coli, Total Haloacetic Acids (HAA5) |
| Falcon Heights | 3,600 | 54 | 3 | E. coli, Stage 2 DBP, TTHM |
| Oak Ridge North | 3,585 | 4 | 0 | |
| Eagle Lake | 3,580 | 20 | 0 | |
| Coahoma | 3,552 | 84 | 62 | TTHM |
| Brackettville | 3,552 | 11 | 0 | |
| Santo | 3,546 | 14 | 2 | TTHM |
| Axtell | 3,515 | 395 | 308 | Barium, Stage 2 DBP |
| Haskell | 3,508 | 118 | 10 | Gross Alpha, Stage 2 DBP, TTHM |
| Gardendale | 3,477 | 3 | 0 | |
| New London | 3,471 | 16 | 1 | Stage 2 DBP |
| Reno | 3,460 | 9 | 2 | Stage 2 DBP, TTHM |
| Sierra Blanca | 3,447 | 48 | 0 | |
| Joaquin | 3,430 | 1,181 | 82 | E. coli, Gross Alpha, Stage 2 DBP +1 more |
| Laneville | 3,402 | 64 | 20 | Stage 2 DBP, TTHM, Total Haloacetic Acids (HAA5) |
| Corrigan | 3,401 | 30 | 1 | Stage 2 DBP |
| Omaha | 3,400 | 10 | 0 | |
| Poteet | 3,396 | 49 | 1 | Stage 2 DBP |
| De Leon | 3,353 | 210 | 104 | Stage 2 DBP, TTHM, Total Haloacetic Acids (HAA5) |
| Llano | 3,352 | 9 | 1 | Gross Alpha |
| Sargent | 3,328 | 162 | 134 | Barium, TTHM |
| Blanco | 3,321 | 212 | 45 | Gross Alpha, TTHM |
| Olney | 3,285 | 16 | 1 | Stage 2 DBP |
| Shallowater | 3,241 | 4,335 | 512 | Arsenic, Barium, HAA5 +4 more |
| Bishop | 3,186 | 1 | 0 | |
| Avinger | 3,180 | 22 | 10 | Stage 2 DBP, Total Haloacetic Acids (HAA5) |
| Spearman | 3,172 | 27 | 0 | |
| Venus | 3,170 | 54 | 10 | Total Haloacetic Acids (HAA5) |
| Gary | 3,156 | 437 | 122 | Disinfection Byproducts, E. coli, Stage 2 DBP +1 more |
| Crane | 3,150 | 45 | 37 | Barium, Stage 2 DBP |
| Newton | 3,121 | 30 | 1 | Stage 2 DBP |
| Pendleton | 3,111 | 7 | 0 | |
| Henrietta | 3,111 | 17 | 2 | Gross Alpha, Stage 2 DBP |
| Sour Lake | 3,110 | 24 | 18 | TTHM |
| Martindale | 3,102 | 38 | 5 | Stage 2 DBP, TTHM, Total Haloacetic Acids (HAA5) |
| Elm Mott | 3,100 | 3 | 0 | |
| Needville | 3,089 | 5 | 1 | Stage 2 DBP |
| Anson | 3,078 | 9 | 0 | |
| Ferris | 3,070 | 61 | 2 | Lead, Stage 2 DBP |
| Cisco | 3,069 | 94 | 41 | TTHM, Total Haloacetic Acids (HAA5) |
| George West | 3,056 | 238 | 1 | Stage 2 DBP |
| Woodlawn | 3,051 | 302 | 103 | Stage 2 DBP, TTHM |
| Elysian Fields | 3,048 | 222 | 1 | Stage 2 DBP |
| La Joya | 3,033 | 135 | 15 | E. coli, Stage 2 DBP, TTHM |
| Overton | 3,023 | 83 | 9 | TTHM, Total Haloacetic Acids (HAA5) |
| Palmer | 3,015 | 39 | 0 | |
| Tennessee Colony | 3,012 | 3 | 0 | |
| Schulenberg | 3,000 | 4 | 0 | |
| Cactus | 3,000 | 21 | 0 | |
| Poth | 2,994 | 10 | 1 | Stage 2 DBP |
| Big Lake | 2,965 | 13 | 1 | Stage 2 DBP |
| Bangs | 2,964 | 37 | 3 | E. coli, Stage 2 DBP |
| Cumby | 2,950 | 147 | 16 | Stage 2 DBP, TTHM |
| Bartlett | 2,950 | 72 | 3 | E. coli, Lead, Stage 2 DBP |
| the Hills | 2,937 | 32 | 1 | Stage 2 DBP |
| Valley Mills | 2,929 | 84 | 2 | Stage 2 DBP |
| Pottsboro | 2,928 | 102 | 1 | Stage 2 DBP |
| Freer | 2,923 | 66 | 51 | Barium |
| Industry | 2,910 | 0 | 0 | |
| Combes | 2,895 | 21 | 8 | TTHM |
| Brazoria | 2,892 | 77 | 1 | Stage 2 DBP |
| Santa Rosa | 2,883 | 58 | 5 | Contaminant 1009, Stage 2 DBP, TTHM |
| Hamlin | 2,881 | 41 | 2 | Stage 2 DBP |
| Del Valle | 2,880 | 109 | 5 | Disinfection Byproducts, Stage 2 DBP |
| Edcouch | 2,878 | 27 | 0 | |
| Hamilton | 2,871 | 35 | 27 | TTHM |
| Floydada | 2,868 | 3 | 0 | |
| Abernathy | 2,865 | 10 | 0 | |
| Deanville | 2,850 | 131 | 4 | E. coli, Stage 2 DBP |
| Lake Kiowa | 2,848 | 36 | 0 | |
| Pennington | 2,839 | 10 | 0 | |
| Richland Springs | 2,830 | 85 | 9 | Disinfection Byproducts, Stage 2 DBP |
| Panorama Village | 2,800 | 8 | 0 | |
| Vinton | 2,792 | 3 | 0 | |
| La Villa | 2,781 | 45 | 2 | E. coli |
| Gunter | 2,772 | 26 | 0 | |
| Sonora | 2,766 | 28 | 1 | Stage 2 DBP |
| Leakey | 2,764 | 57 | 2 | Disinfection Byproducts |
| Oakwood | 2,738 | 71 | 5 | Disinfection Byproducts, Stage 2 DBP |
| Hallettsville | 2,733 | 1 | 0 | |
| Refugio | 2,728 | 142 | 0 | |
| Ponder | 2,711 | 18 | 0 | |
| Stanton | 2,702 | 123 | 66 | Barium, Lead, Selenium +1 more |
| Junction | 2,700 | 151 | 56 | Bromate, Fecal Coliform, Stage 2 DBP +2 more |
| East Tawakoni | 2,686 | 71 | 25 | Stage 2 DBP, TTHM, Total Haloacetic Acids (HAA5) |
| Rotan | 2,682 | 299 | 54 | Contaminant 1041, E. coli, Stage 2 DBP +1 more |
| Bivins | 2,670 | 170 | 47 | Stage 2 DBP, TTHM |
| Odem | 2,670 | 97 | 3 | Stage 2 DBP, TTHM |
| Quanah | 2,662 | 114 | 3 | TTHM |
| Benavides | 2,645 | 366 | 238 | Barium, E. coli, Stage 2 DBP |
| Kirbyville | 2,630 | 120 | 1 | Stage 2 DBP |
| Sacramento | 2,600 | 22 | 5 | Selenium, Stage 2 DBP |
| Campbell | 2,598 | 1 | 0 | |
| Westworth Village | 2,597 | 4 | 0 | |
| Ross | 2,589 | 4 | 0 | |
| Tiki Island | 2,568 | 6 | 0 | |
| Electra | 2,559 | 23 | 2 | Gross Alpha |
| Hughes Springs | 2,527 | 13 | 11 | Stage 2 DBP, Total Haloacetic Acids (HAA5) |
| La Vernia | 2,526 | 31 | 0 | |
| Annetta | 2,517 | 17 | 0 | |
| Bloomington | 2,516 | 879 | 28 | Barium, E. coli, Stage 2 DBP |
| Tahoka | 2,514 | 363 | 179 | Barium, E. coli, Lead +3 more |
| Spring Branch | 2,508 | 60 | 0 | |
| Dodge | 2,500 | 31 | 3 | Barium, E. coli |
| Pantego | 2,500 | 16 | 0 | |
| Farmington Hills | 2,499 | 60 | 2 | Disinfection Byproducts |
| Mount Calm | 2,492 | 165 | 29 | Barium, Stage 2 DBP |
| Meadowlakes | 2,480 | 22 | 2 | E. coli |
| Elmo | 2,475 | 64 | 6 | Disinfection Byproducts |
| Runaway Bay | 2,458 | 84 | 31 | E. coli, Stage 2 DBP, TTHM +1 more |
| Ivanhoe | 2,441 | 5 | 0 | |
| Premont | 2,441 | 25 | 0 | |
| D Hanis | 2,439 | 14 | 2 | Stage 2 DBP |
| Westminster | 2,424 | 1 | 0 | |
| Lyford | 2,421 | 34 | 0 | |
| Phoenix | 2,417 | 43 | 2 | Stage 2 DBP, TTHM |
| Seagraves | 2,417 | 327 | 305 | Barium, Lead |
| Blue Mound | 2,396 | 17 | 0 | |
| Somerville | 2,383 | 55 | 19 | Stage 2 DBP, TTHM |
| Nixon | 2,378 | 7 | 0 | |
| Lexington | 2,376 | 9 | 1 | Stage 2 DBP |
| Colmesneil | 2,373 | 1,667 | 28 | Disinfection Byproducts, Stage 2 DBP |
| Troy | 2,350 | 20 | 5 | TTHM |
| Pickton | 2,345 | 9 | 0 | |
| Goliad | 2,339 | 43 | 1 | Stage 2 DBP |
| Bethany | 2,334 | 11 | 0 | |
| Dalworthington Gardens | 2,330 | 23 | 0 | |
| Shamrock | 2,311 | 18 | 5 | Selenium |
| Canadian | 2,300 | 4 | 0 | |
| Anahuac | 2,296 | 3 | 1 | Contaminant 1008 |
| Neches | 2,295 | 5 | 0 | |
| Memphis | 2,290 | 4 | 1 | Stage 2 DBP |
| Panhandle | 2,284 | 7 | 0 | |
| Callisburg | 2,277 | 17 | 0 | |
| Forreston | 2,277 | 5 | 0 | |
| Idalou | 2,250 | 81 | 64 | Stage 2 DBP, Trichloroethylene |
| Garrison | 2,250 | 46 | 5 | Chlorine Dioxide, Stage 2 DBP |
| Charlotte | 2,247 | 77 | 0 | |
| Mason | 2,228 | 343 | 276 | HAA5, Total Organic Carbon |
| Weimar | 2,226 | 7 | 0 | |
| Riesel | 2,220 | 303 | 235 | Barium, Stage 2 DBP |
| Sabinal | 2,211 | 51 | 2 | E. coli, Stage 2 DBP |
| Mt Enterprise | 2,205 | 9 | 1 | Stage 2 DBP |
| Shavano Park | 2,200 | 23 | 9 | Contaminant 1094 |
| East Bernard | 2,200 | 11 | 0 | |
| Wellington | 2,191 | 11 | 4 | Selenium |
| Manchaca | 2,164 | 45 | 3 | Stage 2 DBP |
| Pointblank | 2,163 | 276 | 173 | Barium, Stage 2 DBP |
| Johnson City | 2,160 | 258 | 0 | |
| Cottonwood Shores | 2,157 | 23 | 0 | |
| Cranfils Gap | 2,152 | 4 | 0 | |
| Prairie Hill | 2,145 | 92 | 61 | Barium |
| Etoile | 2,136 | 27 | 0 | |
| Shiner | 2,127 | 6 | 0 | |
| Bailey | 2,125 | 23 | 1 | Stage 2 DBP |
| Eden | 2,120 | 118 | 100 | HAA5, Total Organic Carbon |
| Van Horn | 2,063 | 12 | 1 | Stage 2 DBP |
| Boyd | 2,044 | 56 | 2 | Disinfection Byproducts |
| La Pryor | 2,043 | 12 | 0 | |
| Chilton | 2,033 | 62 | 2 | Stage 2 DBP |
| Kountze | 2,029 | 4 | 0 | |
| Blossom | 2,007 | 51 | 4 | Disinfection Byproducts, Stage 2 DBP, Total Haloacetic Acids (HAA5) |
| Westlake | 2,002 | 10 | 0 | |
| Verhalen | 2,001 | 1 | 0 | |
| Denver | 1,995 | 567 | 1 | Stage 2 DBP |
| Larue | 1,995 | 8 | 0 | |
| Ganado | 1,994 | 17 | 1 | Stage 2 DBP |
| Village Mills | 1,992 | 6 | 0 | |
| Flatonia | 1,969 | 36 | 15 | Barium, Stage 2 DBP |
| Little River Academy | 1,961 | 10 | 0 | |
| Big Sandy | 1,960 | 67 | 1 | Disinfection Byproducts |
| Marfa | 1,958 | 983 | 51 | Barium, Stage 2 DBP |
| Chico | 1,956 | 476 | 126 | Gross Alpha, Stage 2 DBP, TTHM +1 more |
| Olton | 1,953 | 6 | 0 | |
| Eldorado | 1,951 | 13 | 0 | |
| Snook | 1,948 | 575 | 1 | Stage 2 DBP |
| West Tawakoni | 1,931 | 31 | 3 | Disinfection Byproducts, Stage 2 DBP |
| Stratford | 1,923 | 5 | 0 | |
| Streetman | 1,917 | 184 | 4 | TTHM, Total Haloacetic Acids (HAA5) |
| Joinerville | 1,917 | 6 | 0 | |
| Granger | 1,914 | 32 | 0 | |
| Naples | 1,908 | 303 | 1 | Stage 2 DBP |
| Montague | 1,890 | 60 | 4 | Stage 2 DBP |
| Mccamey | 1,885 | 18 | 1 | Stage 2 DBP |
| New Summerfield | 1,884 | 303 | 214 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| Sebastian | 1,884 | 38 | 1 | Stage 2 DBP |
| Grandview | 1,879 | 11 | 0 | |
| Bovina | 1,874 | 8 | 0 | |
| Rocksprings | 1,857 | 25 | 0 | |
| Matagorda | 1,846 | 168 | 153 | TTHM, Total Haloacetic Acids (HAA5) |
| Wink | 1,839 | 12 | 1 | Stage 2 DBP |
| Hunt | 1,823 | 2,402 | 146 | HAA5, Stage 2 DBP, Total Organic Carbon |
| Hawkins | 1,802 | 178 | 2 | Disinfection Byproducts, Stage 2 DBP |
| Fort Hancock | 1,800 | 9 | 1 | Stage 2 DBP |
| North Zulch | 1,800 | 7 | 1 | Gross Alpha |
| Grapeland | 1,798 | 28 | 1 | Stage 2 DBP |
| Gregory | 1,760 | 21 | 1 | Stage 2 DBP |
| San Jose | 1,757 | 154 | 14 | E. coli, HAA5, Stage 2 DBP +1 more |
| Munday | 1,746 | 121 | 12 | Contaminant 1009, TTHM |
| Tenaha | 1,746 | 69 | 25 | Disinfection Byproducts, Stage 2 DBP, TTHM |
| Crosbyton | 1,741 | 30 | 1 | Stage 2 DBP |
| Goldthwaite | 1,738 | 83 | 4 | TTHM |
| Kerens | 1,737 | 124 | 54 | Gross Alpha, Stage 2 DBP, TTHM |
| Yorktown | 1,726 | 17 | 0 | |
| Queen City | 1,716 | 75 | 3 | Disinfection Byproducts, Stage 2 DBP |
| Concan | 1,715 | 85 | 14 | E. coli |
| Warren | 1,712 | 14 | 0 | |
| Sunray | 1,709 | 12 | 1 | Stage 2 DBP |
| Hale Center | 1,705 | 13 | 0 | |
| Oyster Creek | 1,701 | 11 | 1 | Stage 2 DBP |
| Fentress | 1,698 | 15 | 1 | Fecal Coliform |
| Dorchester | 1,696 | 3 | 0 | |
| Lockney | 1,692 | 5 | 0 | |
| Goodrich | 1,690 | 175 | 10 | Barium, Disinfection Byproducts, E. coli +1 more |
| Rhome | 1,690 | 45 | 30 | HAA5, TTHM, Total Haloacetic Acids (HAA5) |
| Leroy | 1,680 | 93 | 88 | Barium |
| Danbury | 1,673 | 86 | 20 | Barium |
| Lakeside | 1,671 | 3 | 0 | |
| Windthorst | 1,662 | 0 | 0 | |
| Karnack | 1,656 | 53 | 17 | TTHM |
| Clayton | 1,650 | 155 | 38 | Disinfection Byproducts, Stage 2 DBP, TTHM |
| Pattison | 1,650 | 34 | 0 | |
| Cushing | 1,649 | 134 | 19 | Contaminant 1011, Disinfection Byproducts, Stage 2 DBP +1 more |
| Ralls | 1,639 | 28 | 6 | Disinfection Byproducts |
| Morton | 1,638 | 661 | 71 | Barium, Lead, Selenium +1 more |
| Apple Springs | 1,638 | 298 | 128 | Chlorine Dioxide, Stage 2 DBP, TTHM +1 more |
| Moscow | 1,616 | 27 | 2 | Stage 2 DBP |
| Rollingwood | 1,611 | 8 | 0 | |
| Port O Connor | 1,610 | 737 | 36 | Stage 2 DBP, TTHM |
| Raywood | 1,605 | 11 | 2 | Gross Alpha |
| Wheeler | 1,602 | 91 | 84 | Disinfection Byproducts, Selenium |
| Spur | 1,600 | 22 | 1 | Stage 2 DBP |
| Arcola | 1,599 | 0 | 0 | |
| Stinnett | 1,599 | 22 | 0 | |
| Archer City | 1,595 | 2 | 0 | |
| Carlsbad | 1,590 | 30 | 1 | Stage 2 DBP |
| Iraan | 1,579 | 58 | 2 | Stage 2 DBP |
| Eustace | 1,578 | 9 | 1 | Stage 2 DBP |
| Seadrift | 1,577 | 29 | 0 | |
| Provo | 1,576 | 30 | 0 | |
| Klondike | 1,563 | 2 | 0 | |
| Muenster | 1,536 | 7 | 0 | |
| Pattonville | 1,534 | 17 | 0 | |
| Edgewood | 1,530 | 72 | 40 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| Sunset Valley | 1,524 | 5 | 0 | |
| Van Vleck | 1,518 | 21 | 2 | Stage 2 DBP |
| Booker | 1,516 | 11 | 0 | |
| Camp Wood | 1,515 | 78 | 10 | E. coli, Stage 2 DBP |
| Dekalb | 1,511 | 17 | 1 | Stage 2 DBP |
| Ore City | 1,509 | 17 | 2 | TTHM |
| Wells | 1,504 | 779 | 289 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| Buffalo Gap | 1,502 | 49 | 15 | TTHM |
| Dawson | 1,501 | 13 | 1 | Stage 2 DBP |
| Baird | 1,500 | 80 | 31 | E. coli, Stage 2 DBP, TTHM |
| Shoreacres | 1,493 | 14 | 0 | |
| La Coste | 1,488 | 10 | 0 | |
| Trinidad | 1,482 | 66 | 30 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| Runge | 1,482 | 48 | 1 | Stage 2 DBP |
| Menard | 1,471 | 5 | 1 | E. coli |
| Tolar | 1,461 | 10 | 0 | |
| Claude | 1,450 | 43 | 1 | Stage 2 DBP |
| Briarcliff | 1,438 | 6 | 0 | |
| Maud | 1,437 | 11 | 0 | |
| Robert Lee | 1,435 | 176 | 115 | Gross Alpha, TTHM, Total Haloacetic Acids (HAA5) |
| Knox City | 1,430 | 23 | 4 | E. coli, Stage 2 DBP |
| Meridian | 1,415 | 28 | 0 | |
| Poynor | 1,407 | 19 | 1 | Stage 2 DBP |
| Markham | 1,400 | 4 | 0 | |
| Thorndale | 1,400 | 4 | 0 | |
| Lone Star | 1,400 | 21 | 1 | Stage 2 DBP |
| New Baden | 1,400 | 1 | 0 | |
| Wolfe City | 1,398 | 74 | 4 | E. coli |
| Brashear | 1,395 | 11 | 2 | Stage 2 DBP |
| Hico | 1,379 | 6 | 0 | |
| Godley | 1,367 | 22 | 0 | |
| Farwell | 1,360 | 13 | 0 | |
| Alvord | 1,360 | 32 | 16 | HAA5, Haloacetic Acids |
| Plains | 1,355 | 305 | 301 | Barium, Lead |
| Rosebud | 1,353 | 62 | 9 | Stage 2 DBP, TTHM |
| Knollwood | 1,353 | 28 | 0 | |
| Wallis | 1,352 | 19 | 1 | Stage 2 DBP |
| Newark | 1,352 | 1,489 | 3 | Chlorine Dioxide |
| Encinal | 1,338 | 6 | 0 | |
| Natalia | 1,336 | 20 | 1 | Stage 2 DBP |
| Palm Valley | 1,310 | 5 | 0 | |
| Sundown | 1,300 | 8 | 0 | |
| Kemp | 1,283 | 39 | 10 | E. coli, Stage 2 DBP |
| Morgan | 1,281 | 7 | 0 | |
| China | 1,280 | 15 | 0 | |
| Sheridan | 1,269 | 409 | 11 | Disinfection Byproducts, E. coli, Stage 2 DBP |
| Hilltop Lakes | 1,257 | 0 | 0 | |
| Southmayd | 1,254 | 80 | 4 | Disinfection Byproducts |
| Lipan | 1,248 | 11 | 0 | |
| Zavalla | 1,244 | 499 | 124 | Bromate, E. coli, Fecal Coliform +3 more |
| Roscoe | 1,238 | 190 | 98 | Disinfection Byproducts, Selenium, Stage 2 DBP |
| Abbott | 1,237 | 27 | 0 | |
| Chester | 1,237 | 18 | 1 | Stage 2 DBP |
| Woodsboro | 1,233 | 51 | 43 | Barium |
| Asherton | 1,225 | 65 | 1 | Stage 2 DBP |
| Avalon | 1,218 | 26 | 1 | Stage 2 DBP |
| Kendleton | 1,207 | 20 | 1 | Stage 2 DBP |
| Louise | 1,206 | 11 | 0 | |
| Petersburg | 1,205 | 45 | 0 | |
| Fort Davis | 1,201 | 11 | 9 | HAA5 |
| Rogers | 1,200 | 32 | 0 | |
| Call | 1,200 | 23 | 0 | |
| Ransom Canyon | 1,189 | 3 | 0 | |
| Batesville | 1,182 | 30 | 2 | E. coli, Stage 2 DBP |
| Lindsay | 1,179 | 22 | 0 | |
| Tom Bean | 1,178 | 2 | 0 | |
| Tye | 1,176 | 42 | 1 | Stage 2 DBP |
| Orem | 1,170 | 4 | 0 | |
| Orange Grove | 1,170 | 17 | 1 | Stage 2 DBP |
| Paducah | 1,165 | 112 | 4 | Selenium, Stage 2 DBP |
| Roby | 1,147 | 41 | 1 | Stage 2 DBP |
| Daisetta | 1,141 | 67 | 0 | |
| Florence | 1,136 | 45 | 3 | Stage 2 DBP, TTHM |
| Log Cabin | 1,134 | 23 | 1 | Stage 2 DBP |
| Gruver | 1,130 | 8 | 0 | |
| Rivera | 1,125 | 13 | 0 | |
| De Berry | 1,101 | 8 | 0 | |
| Lakehills | 1,092 | 0 | 0 | |
| Murchison | 1,092 | 32 | 1 | Stage 2 DBP |
| Santa Anna | 1,090 | 9 | 1 | Stage 2 DBP |
| Bogata | 1,074 | 56 | 0 | |
| Jamaica Beach | 1,072 | 17 | 1 | Stage 2 DBP |
| Gorman | 1,051 | 67 | 45 | Gross Alpha, TTHM |
| Pineland | 1,043 | 3 | 0 | |
| Rio Vista | 1,040 | 54 | 1 | Stage 2 DBP |
| Crowell | 1,039 | 214 | 183 | Selenium, TTHM, Total Haloacetic Acids (HAA5) |
| Medina | 1,038 | 112 | 56 | HAA5, Total Organic Carbon |
| Richland | 1,020 | 17 | 2 | Stage 2 DBP |
| Jewett | 1,001 | 81 | 1 | Stage 2 DBP |
| Hart | 1,000 | 34 | 22 | PFOS, Stage 2 DBP |
| Palo Pinto | 1,000 | 14 | 3 | Stage 2 DBP, TTHM |
| Bronte | 999 | 1 | 0 | |
| Carbon | 999 | 130 | 68 | Stage 2 DBP, TTHM, Total Haloacetic Acids (HAA5) |
| Gallatin | 996 | 0 | 0 | |
| Maypearl | 994 | 26 | 0 | |
| Lovelady | 990 | 15 | 6 | E. coli, TTHM |
| Ector | 981 | 19 | 1 | Stage 2 DBP |
| Wortham | 980 | 7 | 1 | Stage 2 DBP |
| Garwood | 979 | 133 | 1 | Stage 2 DBP |
| Beasley | 977 | 23 | 1 | Stage 2 DBP |
| Thrall | 975 | 6 | 5 | TTHM |
| Waelder | 970 | 125 | 0 | |
| Paradise | 969 | 47 | 22 | TTHM, Total Haloacetic Acids (HAA5) |
| New Home | 965 | 305 | 250 | Barium, Lead, Stage 2 DBP |
| De Kalb | 963 | 1 | 0 | |
| Lakewood Village | 963 | 38 | 2 | Stage 2 DBP |
| Calvert | 962 | 71 | 3 | E. coli |
| Lorenzo | 957 | 11 | 0 | |
| Aspermont | 956 | 83 | 25 | Disinfection Byproducts, Stage 2 DBP, TTHM |
| Blessing | 950 | 3 | 0 | |
| Rule | 948 | 22 | 0 | |
| Lott | 947 | 49 | 10 | TTHM, Total Haloacetic Acids (HAA5) |
| Sudan | 940 | 6 | 1 | Selenium |
| Tioga | 938 | 3 | 0 | |
| Earth | 937 | 27 | 11 | Selenium |
| Burkeville | 933 | 131 | 1 | Stage 2 DBP |
| Price | 933 | 2 | 0 | |
| Knippa | 933 | 7 | 1 | Stage 2 DBP |
| Moore | 930 | 26 | 0 | |
| Cross Plains | 926 | 30 | 0 | |
| Holiday Lakes | 921 | 8 | 0 | |
| Miles | 920 | 40 | 10 | Selenium |
| White Deer | 918 | 11 | 0 | |
| Tilden | 918 | 125 | 3 | E. coli, Stage 2 DBP |
| Groveton | 918 | 4 | 2 | TTHM |
| Strawn | 916 | 258 | 102 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| Weston | 912 | 15 | 1 | Stage 2 DBP |
| Banquete | 912 | 62 | 1 | Stage 2 DBP |
| Anton | 907 | 9 | 3 | Chlorine Dioxide, Selenium |
| Cresson | 906 | 137 | 3 | Stage 2 DBP |
| Centerville | 903 | 2 | 0 | |
| Woodlake | 903 | 170 | 71 | Stage 2 DBP, TTHM |
| Scotland | 900 | 5 | 0 | |
| Terlingua | 888 | 62 | 22 | Disinfection Byproducts, HAA5 |
| Sterling City | 888 | 0 | 0 | |
| Vega | 885 | 33 | 1 | Gross Alpha |
| Frost | 882 | 56 | 22 | Gross Alpha, Stage 2 DBP, TTHM |
| Saint Jo | 881 | 168 | 2 | E. coli |
| Liverpool | 870 | 49 | 18 | Barium, Disinfection Byproducts |
| Big Wells | 870 | 12 | 0 | |
| Lone Oak | 867 | 8 | 0 | |
| Devers | 864 | 10 | 0 | |
| Damon | 860 | 48 | 2 | Stage 2 DBP |
| Bremond | 858 | 5 | 0 | |
| Moulton | 857 | 191 | 48 | TTHM |
| Blooming Grove | 857 | 9 | 0 | |
| Agua Dulce | 848 | 17 | 0 | |
| Rankin | 846 | 51 | 20 | HAA5, Stage 2 DBP, Total Organic Carbon |
| Boling | 845 | 31 | 0 | |
| Gause | 828 | 17 | 1 | Stage 2 DBP |
| Nome | 825 | 507 | 330 | Disinfection Byproducts, E. coli, Fecal Coliform +3 more |
| Trenton | 820 | 115 | 0 | |
| Silverton | 808 | 183 | 112 | Stage 2 DBP, TTHM, Total Haloacetic Acids (HAA5) |
| Sanderson | 800 | 39 | 1 | Stage 2 DBP |
| Hull | 798 | 30 | 0 | |
| Milford | 796 | 62 | 1 | Stage 2 DBP |
| Walnut Spring | 795 | 7 | 0 | |
| Maydelle | 795 | 34 | 1 | Stage 2 DBP |
| Helotes | 792 | 32 | 2 | Stage 2 DBP |
| Sunrise Beach | 791 | 25 | 0 | |
| Olden | 783 | 21 | 11 | TTHM, Total Haloacetic Acids (HAA5) |
| Mertzon | 781 | 70 | 0 | |
| Utopia | 780 | 18 | 0 | |
| Skidmore | 777 | 59 | 46 | HAA5 |
| Mclean | 775 | 8 | 0 | |
| Lawn | 767 | 173 | 25 | E. coli, TTHM |
| Rising Star | 765 | 49 | 3 | Gross Alpha, Stage 2 DBP |
| Point Comfort | 759 | 49 | 9 | E. coli |
| Deport | 750 | 38 | 3 | Stage 2 DBP, TTHM |
| Lincoln | 750 | 25 | 11 | TTHM |
| Barstow | 750 | 77 | 1 | Stage 2 DBP |
| Bardwell | 747 | 93 | 2 | Contaminant 1041, Lead |
| Placedo | 741 | 160 | 57 | Barium |
| Ingram | 740 | 16 | 1 | Stage 2 DBP |
| Highland Haven | 734 | 1 | 0 | |
| Dodd City | 729 | 24 | 3 | Chlorine Dioxide, Stage 2 DBP |
| Riviera | 729 | 164 | 104 | Chlorine Dioxide, HAA5, Haloacetic Acids |
| New Deal | 729 | 152 | 0 | |
| West Hollywood | 726 | 50 | 29 | TTHM |
| Mountain City | 725 | 12 | 0 | |
| Amherst | 721 | 13 | 0 | |
| Stonewall | 720 | 7 | 1 | Stage 2 DBP |
| Throckmorton | 720 | 63 | 31 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| Normangee | 719 | 17 | 0 | |
| Center Point | 717 | 113 | 4 | Stage 2 DBP |
| Covington | 717 | 62 | 0 | |
| Happy | 712 | 64 | 1 | Stage 2 DBP |
| Talco | 711 | 2 | 0 | |
| Laird Hill | 705 | 27 | 0 | |
| Odonnell | 704 | 9 | 0 | |
| Bon Wier | 700 | 6 | 1 | Stage 2 DBP |
| Lyons | 699 | 64 | 23 | Disinfection Byproducts, Stage 2 DBP, TTHM |
| Christine | 696 | 40 | 0 | |
| Mcdade | 696 | 9 | 1 | Stage 2 DBP |
| Spicewood | 687 | 30 | 0 | |
| Bloomburg | 681 | 20 | 0 | |
| Driscoll | 680 | 70 | 5 | Stage 2 DBP, TTHM |
| Ira | 680 | 104 | 15 | Stage 2 DBP, TTHM |
| Chillicothe | 675 | 85 | 52 | Selenium, Stage 2 DBP, TTHM |
| Tivoli | 665 | 40 | 16 | Barium |
| Reklaw | 660 | 26 | 11 | TTHM |
| Lolita | 660 | 4 | 0 | |
| Pettus | 650 | 15 | 0 | |
| Hays | 639 | 3 | 0 | |
| Winfield | 614 | 23 | 2 | Gross Alpha |
| Ladonia | 597 | 53 | 0 | |
| Kileen | 594 | 0 | 0 | |
| Meadow | 592 | 131 | 32 | Barium |
| Matador | 578 | 11 | 0 | |
| Ellinger | 573 | 210 | 199 | Barium |
| Bryson | 570 | 72 | 8 | Stage 2 DBP, TTHM |
| Wadsworth | 570 | 2 | 0 | |
| Anderson | 569 | 950 | 11 | Disinfection Byproducts, Stage 2 DBP |
| Wickett | 567 | 12 | 0 | |
| Cedaredge | 563 | 56 | 3 | Stage 2 DBP |
| Evadale | 559 | 90 | 1 | Stage 2 DBP |
| Royal Oak | 555 | 21 | 0 | |
| Glen Allen | 552 | 10 | 0 | |
| Kirvin | 549 | 87 | 1 | Stage 2 DBP |
| Groom | 548 | 3 | 1 | Stage 2 DBP |
| Edroy | 540 | 57 | 0 | |
| Roxton | 538 | 34 | 27 | Stage 2 DBP, TTHM, Total Haloacetic Acids (HAA5) |
| Newcastle | 532 | 16 | 1 | Stage 2 DBP |
| Red Rock | 531 | 37 | 2 | Stage 2 DBP |
| Thornton | 530 | 19 | 0 | |
| Chicago | 528 | 9 | 0 | |
| Rowena | 528 | 413 | 215 | Disinfection Byproducts, TTHM, Total Haloacetic Acids (HAA5) |
| Vanderbilt | 525 | 21 | 2 | Stage 2 DBP |
| Morgan Mill | 522 | 8 | 1 | Stage 2 DBP |
| Martinsville | 519 | 9 | 1 | Stage 2 DBP |
| Petrolia | 514 | 181 | 1 | Stage 2 DBP |
| Falls City | 514 | 56 | 1 | Stage 2 DBP |
| Jayton | 513 | 73 | 3 | Chlorine Dioxide, Stage 2 DBP |
| Crofton | 510 | 67 | 0 | |
| Loraine | 504 | 55 | 1 | Stage 2 DBP |
| Westlake Village | 501 | 222 | 1 | Stage 2 DBP |
| Boys Ranch | 500 | 18 | 0 | |
| Broaddus | 495 | 54 | 0 | |
| Miami | 494 | 16 | 0 | |
| Kress | 493 | 19 | 1 | Stage 2 DBP |
| New Ulm | 492 | 4 | 1 | Gross Alpha |
| Bulverde | 486 | 49 | 1 | Stage 2 DBP |
| Sadler | 483 | 2 | 0 | |
| Christoval | 482 | 258 | 0 | |
| Sacul | 478 | 13 | 1 | Stage 2 DBP |
| Smyer | 474 | 174 | 157 | Barium, Lead |
| Bloomfield Hills | 474 | 12 | 1 | Stage 2 DBP |
| Era | 462 | 35 | 1 | Stage 2 DBP |
| Kosse | 461 | 26 | 0 | |
| Kennard | 460 | 3 | 0 | |
| Mirando City | 460 | 58 | 22 | Barium, Selenium, Stage 2 DBP |
| Gober | 459 | 3 | 0 | |
| Smiley | 458 | 26 | 1 | Stage 2 DBP |
| Oglesby | 454 | 8 | 0 | |
| Betram | 450 | 9 | 1 | Stage 2 DBP |
| Garden City | 450 | 11 | 0 | |
| Texline | 448 | 158 | 60 | Disinfection Byproducts, E. coli, HAA5 +1 more |
| Byers | 446 | 182 | 62 | Selenium, Stage 2 DBP, TTHM |
| Wilson | 444 | 58 | 40 | Arsenic, Selenium |
| Ropesville | 434 | 89 | 54 | Lead, Stage 2 DBP |
| Marathon | 430 | 4 | 0 | |
| Hungerford | 430 | 93 | 3 | Stage 2 DBP |
| Evant | 426 | 25 | 0 | |
| Midfield | 426 | 16 | 0 | |
| Scottsdale | 425 | 60 | 1 | Stage 2 DBP |
| Lefors | 420 | 21 | 1 | Stage 2 DBP |
| Artesia | 420 | 69 | 1 | Stage 2 DBP |
| Randolph | 417 | 29 | 0 | |
| Follett | 412 | 228 | 3 | Selenium |
| Oilton | 411 | 64 | 1 | Stage 2 DBP |
| Avery | 408 | 37 | 0 | |
| Balmorhea | 406 | 49 | 7 | Disinfection Byproducts |
| Pipe Creek | 405 | 96 | 1 | Stage 2 DBP |
| Fischer | 405 | 67 | 24 | Lead |
| Orchard | 400 | 18 | 0 | |
| Dime Box | 396 | 0 | 0 | |
| Grandfalls | 395 | 18 | 0 | |
| Skellytown | 394 | 38 | 1 | Stage 2 DBP |
| Gustine | 392 | 22 | 1 | Stage 2 DBP |
| Bushland | 380 | 14 | 0 | |
| Whiteface | 375 | 70 | 0 | |
| Carmine | 375 | 11 | 0 | |
| Hartley | 375 | 100 | 1 | Stage 2 DBP |
| Rochelle | 372 | 61 | 35 | HAA5, Stage 2 DBP, Total Organic Carbon |
| Trent | 368 | 17 | 1 | Stage 2 DBP |
| Blanket | 367 | 2 | 0 | |
| Buckholts | 365 | 97 | 0 | |
| May | 363 | 23 | 3 | Disinfection Byproducts, Stage 2 DBP |
| Annona | 363 | 113 | 21 | E. coli, TTHM |
| Iredell | 360 | 29 | 0 | |
| Bruni | 350 | 202 | 148 | Barium |
| Barker | 347 | 2,080 | 85 | Barium, E. coli, Selenium +3 more |
| Quitaque | 342 | 114 | 91 | Selenium |
| Nordheim | 336 | 18 | 1 | Stage 2 DBP |
| Elk Grove | 336 | 55 | 15 | Selenium |
| Higgins | 325 | 22 | 0 | |
| Bayside | 325 | 21 | 0 | |
| Turkey | 317 | 274 | 97 | Selenium, Stage 2 DBP |
| Welch | 315 | 175 | 156 | Barium, Selenium |
| Burton | 315 | 16 | 5 | Disinfection Byproducts |
| Nazareth | 311 | 21 | 3 | E. coli, Stage 2 DBP |
| Blackwell | 308 | 20 | 0 | |
| Darrouzett | 301 | 26 | 2 | E. coli, Stage 2 DBP |
| Cranfills Gap | 300 | 16 | 0 | |
| Big Bend National Park | 300 | 21 | 0 | |
| Loop | 300 | 218 | 145 | Barium, Lead, Selenium +1 more |
| Melvin | 300 | 197 | 128 | Disinfection Byproducts, HAA5, Stage 2 DBP +1 more |
| Bellevue | 289 | 7 | 0 | |
| Penelope | 282 | 3 | 0 | |
| Barksdale | 279 | 494 | 216 | Bromate, Fecal Coliform, Stage 2 DBP |
| Huntington Beach | 279 | 13 | 1 | Stage 2 DBP |
| Priddy | 276 | 0 | 0 | |
| Gail | 275 | 116 | 83 | Barium, Lead |
| Hedley | 275 | 74 | 0 | |
| Ratcliff | 275 | 34 | 0 | |
| Westbrook | 275 | 15 | 0 | |
| Orlando | 274 | 48 | 0 | |
| Bluff Dale | 270 | 3 | 1 | Stage 2 DBP |
| Channing | 265 | 13 | 0 | |
| Brookeland | 265 | 22 | 4 | Disinfection Byproducts, Stage 2 DBP |
| Forestburg | 264 | 21 | 0 | |
| Lueders | 259 | 166 | 94 | Gross Alpha, TTHM, Total Haloacetic Acids (HAA5) |
| Goldsmith | 257 | 32 | 3 | Barium |
| Fayetteville | 253 | 33 | 2 | Stage 2 DBP |
| Tynan | 250 | 27 | 1 | Stage 2 DBP |
| Donie | 250 | 1 | 0 | |
| Cotton Center | 250 | 52 | 6 | E. coli, Stage 2 DBP |
| Ben Franklin | 249 | 12 | 0 | |
| Rochester | 248 | 52 | 8 | Selenium, Stage 2 DBP |
| Springlake | 247 | 49 | 5 | E. coli, Stage 2 DBP |
| Ackerly | 245 | 60 | 18 | Barium, Selenium |
| Dell City | 245 | 189 | 1 | Stage 2 DBP |
| Malone | 237 | 4 | 0 | |
| Benjamin | 235 | 94 | 71 | Selenium |
| Moran | 235 | 81 | 7 | TTHM |
| Quintana | 231 | 81 | 51 | Barium, Disinfection Byproducts, Stage 2 DBP +2 more |
| Roaring Springs | 231 | 24 | 10 | Stage 2 DBP, TTHM |
| Rock Island | 230 | 12 | 0 | |
| Forsan | 228 | 130 | 1 | Stage 2 DBP |
| Synder | 225 | 361 | 155 | HAA5, Haloacetic Acids, Stage 2 DBP +1 more |
| Tehuacana | 224 | 8 | 0 | |
| Mingus | 223 | 80 | 35 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| Sarita | 222 | 71 | 13 | Haloacetic Acids, Stage 2 DBP |
| Barry | 220 | 24 | 0 | |
| Wildorado | 220 | 37 | 0 | |
| Bynum | 217 | 14 | 0 | |
| Douglassville | 211 | 139 | 1 | Stage 2 DBP |
| Dickens | 208 | 10 | 0 | |
| Goree | 203 | 14 | 0 | |
| Whitharral | 200 | 233 | 139 | Lead, Selenium, Stage 2 DBP |
| Wellman | 200 | 271 | 193 | Barium, Lead, Selenium +1 more |
| Loving | 200 | 15 | 0 | |
| Windom | 199 | 9 | 1 | Stage 2 DBP |
| Slidell | 192 | 49 | 1 | Stage 2 DBP |
| Valentine | 190 | 31 | 1 | Stage 2 DBP |
| Harrold | 189 | 54 | 1 | Stage 2 DBP |
| Torrance | 186 | 3 | 0 | |
| Flat | 180 | 14 | 1 | Stage 2 DBP |
| Mertens | 180 | 97 | 1 | Stage 2 DBP |
| Megargel | 179 | 86 | 74 | TTHM, Total Haloacetic Acids (HAA5) |
| Comstock | 175 | 6 | 0 | |
| Midway | 173 | 7 | 4 | Disinfection Byproducts, TTHM |
| Lazbuddie | 168 | 46 | 1 | Stage 2 DBP |
| Eola | 165 | 302 | 57 | Selenium, Stage 2 DBP |
| La Ward | 165 | 9 | 0 | |
| Mentone | 165 | 130 | 1 | Stage 2 DBP |
| Weinert | 162 | 187 | 132 | Selenium, Stage 2 DBP |
| Lakeview | 160 | 203 | 77 | E. coli, Selenium, Stage 2 DBP +1 more |
| Petty | 159 | 53 | 0 | |
| Briscoe | 155 | 8 | 2 | Disinfection Byproducts |
| Leesburg | 150 | 14 | 0 | |
| Barnhart | 150 | 39 | 1 | Stage 2 DBP |
| Lohn | 150 | 59 | 27 | HAA5, Stage 2 DBP, Total Organic Carbon |
| Whitt | 150 | 13 | 0 | |
| Minden | 150 | 18 | 1 | Stage 2 DBP |
| Austwell | 147 | 35 | 1 | Stage 2 DBP |
| Hockley | 144 | 11 | 1 | Stage 2 DBP |
| Morse | 140 | 43 | 1 | Stage 2 DBP |
| Thompsons | 135 | 9 | 1 | Stage 2 DBP |
| Fowlerton | 135 | 28 | 1 | Stage 2 DBP |
| Beach City | 132 | 18 | 9 | TTHM |
| Pyote | 131 | 36 | 0 | |
| Adrian | 129 | 154 | 1 | Stage 2 DBP |
| Littleton | 123 | 70 | 1 | Stage 2 DBP |
| Palm Desert | 123 | 14 | 3 | TTHM |
| Sanford | 120 | 39 | 7 | Disinfection Byproducts, Stage 2 DBP |
| Las Cruces | 120 | 180 | 101 | Selenium, Stage 2 DBP |
| Umbarger | 120 | 45 | 14 | Lead, Stage 2 DBP |
| Marietta | 115 | 23 | 16 | TTHM |
| Cuney | 115 | 201 | 5 | E. coli, Stage 2 DBP |
| Aquilla | 106 | 29 | 1 | Stage 2 DBP |
| Kingwood | 102 | 14 | 0 | |
| Spade | 100 | 90 | 9 | Selenium, Stage 2 DBP |
| Farnsworth | 100 | 11 | 1 | Stage 2 DBP |
Data Sources
Drinking water data from the EPA Safe Drinking Water Information System (SDWIS). Only active community water systems (CWS) serving 100+ people are included.