Water Quality in Texas
Water hardness and contaminant data for 31 cities across Texas. Find your city below to see a detailed water quality profile.
31
Cities
177
Avg Hardness (PPM)
298
Hardest City (PPM)
Texas Cities by Water Hardness
| City | Hardness (PPM) | Level | PFAS (ppt) | Source |
|---|---|---|---|---|
| San Angelo | 298 | Extremely Hard | 4 | O.C. Fisher Lake, Twin Buttes Reservoir |
| McAllen | 290 | Extremely Hard | 7 | Rio Grande |
| Abilene | 290 | Extremely Hard | 6 | Fort Phantom Hill Lake, Hubbard Creek Re… |
| Lubbock | 284 | Extremely Hard | 4 | Ogallala Aquifer, Lake Meredith |
| Midland | 283 | Extremely Hard | 4 | T-Bar Ranch wellfield, Colorado River |
| Odessa | 278 | Extremely Hard | 4 | Ward County wellfields |
| Laredo | 277 | Extremely Hard | 5 | Rio Grande |
| Amarillo | 274 | Extremely Hard | 7 | Ogallala Aquifer |
| El Paso | 265 | Extremely Hard | 6 | Rio Grande, Hueco Bolson, desal |
| Denton | 246 | Very Hard | 5 | Lake Lewisville, Lake Ray Roberts |
| Allen | 242 | Very Hard | 4 | Lavon Lake, Lake Texoma |
| San Antonio | 240 | Very Hard | 3 | Edwards Aquifer |
| Brownsville | 236 | Very Hard | 5 | Rio Grande |
| Round Rock | 195 | Very Hard | 4 | Lake Georgetown |
| Waco | 177 | Hard | 5 | Lake Waco |
| Arlington | 124 | Hard | 4 | Dallas/Fort Worth blend |
| Plano | 124 | Hard | 3 | North Texas MWD |
| Houston | 120 | Hard | 5 | Surface water |
| Garland | 120 | Hard | 4 | North Texas MWD |
| Frisco | 119 | Moderately Hard | 4 | North Texas MWD |
| Corpus Christi | 113 | Moderately Hard | 3 | Lake Corpus Christi, Choke Canyon |
| College Station | 113 | Moderately Hard | 4 | Brazos River Authority, Alluvial wells |
| Fort Worth | 110 | Moderately Hard | 5 | Cedar Creek, Richland-Chambers |
| Dallas | 100 | Moderately Hard | 4 | Surface reservoirs |
| Irving | 94 | Moderately Hard | 4 | Dallas Water Utilities |
| McKinney | 93 | Moderately Hard | 3 | North Texas MWD |
| Killeen | 92 | Moderately Hard | 3 | Belton Lake |
| Sugar Land | 90 | Moderately Hard | 6 | Brazos River Authority, groundwater |
| Tyler | 75 | Moderately Hard | 4 | Lake Palestine, Lake Tyler |
| Pearland | 70 | Moderately Hard | 5 | Groundwater, surface water blend |
| Beaumont | 67 | Moderately Hard | 5 | Neches River |