Water hardness, which indicates the concentration of dissolved minerals like calcium and magnesium in water, can vary significantly across the vast state of Texas. Texas, situated in the southern central region of the U.S., exhibits a diverse range of water hardness levels, influenced by its expansive geological diversity.
Within Texas, hardness levels can range from soft in some areas to very hard in others, often reflecting the local geology and the source of water supply. For example, regions such as the Hill Country are known for having very hard water due to the limestone formations that contribute minerals to the water. In contrast, other areas may have comparatively softer water.
This variation in water hardness across Texas affects both the taste of the water and the performance of cleaning agents like soaps and detergents. It can also have implications for the maintenance of water pipes and appliances. Given the state’s size and geological complexity, water hardness levels are not uniform and can change, emphasizing the need for localized water treatment solutions and monitoring.
The data below illustrates a wide spectrum of water hardness measurements across different cities, quantified in Parts Per Million (ppm) and Grains Per Gallon (gpg). Some cities, including San Angelo, Kyle, and Round Rock display significantly high water hardness levels, reaching up to 472 ppm, 27.57 gpg. On the other end of the spectrum, cities like College Station and Bryan boast exceptionally low water hardness figures, downwards of 6.0 ppm, 0.35 gpg. Nonetheless, there is a noticeable absence of water hardness data for several cities, such as San Antonio, Dallas, and Austin, as no current figures are available for these locations.
City | Hardness ppm (mg/L) | Hardness gpg | Information Source | Notes |
Houston | 136.0 | 7.9 | Link | |
San Antonio | n/a | n/a | Link | |
Dallas | n/a | n/a | Link | |
Austin | n/a | n/a | Link | Report mentions they soften the water, but don’t provide a ppm or gpg value |
Fort Worth | 135.5 | 7.9 | Link | |
El Paso | 171.4 | 10.0 | Link | From the “Chemical Analysis” report at bottom of this page, not the water CCR |
Arlington | 95.1 | 5.6 | Link | |
Corpus Christi | 163.0 | 9.5 | Link | |
Plano | 142.0 | 8.3 | Link | |
Lubbock | 201.0 | 11.7 | Link | |
Laredo | n/a | n/a | Link | |
Irving | n/a | n/a | Link | |
Garland | 142.0 | 8.3 | Link | |
Frisco | 142.0 | 8.3 | Link | |
McKinney | n/a | n/a | Link | |
Amarillo | n/a | n/a | Link | |
Grand Prairie | 170.0 | 9.9 | Link | |
Brownsville | 77.3 | 4.5 | Link | |
Killeen | n/a | n/a | Link | |
Pasadena | 136.0 | 7.9 | Link | Purchases water from Houston |
Denton | n/a | n/a | Link | Only alkalinity reported, not hardness |
Mesquite | 142.0 | 8.3 | Link | |
McAllen | n/a | n/a | Link | |
Waco | n/a | n/a | Link | |
Carrollton | n/a | n/a | Link | |
Midland | n/a | n/a | Link | |
Pearland | n/a | n/a | Link | |
Abilene | 227.0 | 13.3 | Link | |
Round Rock | 241.0 | 14.1 | Link | |
College Station | 6.0 | 0.4 | Link | |
Richardson | 142.0 | 8.3 | Link | |
League City | n/a | n/a | Link | |
Lewisville | n/a | n/a | Link | |
Beaumont | n/a | n/a | Link | |
Odessa | n/a | n/a | Link | |
Sugar Land | 148.0 | 8.6 | Link | |
Tyler | 31.8 | 1.9 | Link | |
Allen | 142.0 | 8.3 | Link | |
Wichita Falls | n/a | n/a | Link | |
Edinburg | n/a | n/a | Link | |
San Angelo | 472.0 | 27.8 | Link | Taken from weekly report, was not in CCR. Used the Sept 14 Report |
New Braunfels | n/a | n/a | Link | |
Conroe | n/a | n/a | Link | |
Bryan | 8.5 | 0.5 | Link | |
Mission | n/a | n/a | Link | |
Temple | 149.0 | 8.7 | Link | |
Baytown | n/a | n/a | Link | |
Longview | 65.1 | 3.8 | Link | |
Pharr | n/a | n/a | Link | |
Cedar Park | 175.0 | 10.2 | Link | |
Flower Mound | n/a | n/a | Link | |
Georgetown | n/a | n/a | Link | |
Missouri City | n/a | n/a | Link | |
Mansfield | 105.0 | 6.0 | Link | |
Harlingen | n/a | n/a | Link | |
North Richland Hills | 137.0 | 8.0 | Link | |
San Marcos | 283.0 | 16.5 | Link | |
Leander | 171.0 | 10.0 | Link | |
Pflugerville | 212.4 | 12.4 | Link | |
Victoria | 181.0 | 10.6 | Link | |
Rowlett | 142.0 | 8.3 | Link | |
Euless | 66.9 | 3.9 | Link | Took median of the two sources serving Euless |
Wylie | 142.0 | 8.3 | Link | |
DeSoto | n/a | n/a | Link | |
Port Arthur | n/a | n/a | Link | |
Texas City | n/a | n/a | Link | |
Galveston | 173.0 | 10.1 | Link | |
Kyle | 304.0 | 16.5 | Link | |
Burleson | 136.0 | 7.9 | Link | |
Little Elm | 142.0 | 8.3 | Link | |
Grapevine | 121.0 | 7.1 | Link | Took median of two sources serving Grapevine |
Rockwall | 142.0 | 8.3 | Link | |
Bedford | 125.0 | 7.3 | Link | |
Cedar Hill | n/a | n/a | Link | |
Huntsville | n/a | n/a | Link | |
Haltom City | 135.5 | 7.9 | Link | |
Keller | 135.5 | 7.9 | Link | |
The Colony | 11.9 | 0.7 | Link | |
Sherman | 95.3 | 5.6 | Link | Took median of the range of the Distribution System sample |
Waxahachie | 94.6 | 5.5 | Link | |
Schertz | 100.0 | 5.8 | Link | |
Coppell | n/a | n/a | Link | |
Weslaco | n/a | n/a | Link | |
Friendswood | 136.0 | 7.9 | Link | Purchases from Houston |
Lancaster | n/a | n/a | Link | |
Hurst | 98.0 | 5.7 | Link | |
Duncanville | n/a | n/a | Link | |
Rosenberg | 93.2 | 5.4 | Link | |
Midlothian | n/a | n/a | Link | |
Copperas Cove | n/a | n/a | Link | |
Farmers Branch | n/a | n/a | Link | |
Socorro | 233.0 | 13.6 | Link | Lower Valley Water District Provides their water, and purchases from El Paso, took average of two Lower Valley listings on the El Paso CCR |
Texarkana | n/a | n/a | Link | |
La Porte | n/a | n/a | Link | |
San Juan | n/a | n/a | Link | |
Del Rio | n/a | n/a | Link | |
Prosper | 142.0 | 8.3 | Link | |
Lufkin | n/a | n/a | Link | |
Weatherford | 151.0 | 8.8 | Link | |
Deer Park | n/a | n/a | Link |
ppm = Parts Per Million
mg/L = Milligrams Per Liter
gpg = Grains Per Gallon
Hard water can cause issues such as mineral buildup in plumbing and appliances, reduce the efficacy of soaps and detergents, and affect the taste of the water. A tried and true solution is the use of a water softener. A water softener, like the ones from DROP, could be a worthwhile investment.
These devices work by replacing the calcium and magnesium ions that cause hardness with sodium ions, resulting in softer water. With innovative features, easy installation, and efficient operation, DROP smart water softeners provide a solution to hard water issues, extending the lifespan of appliances, improving water taste, enhancing soap effectiveness, reducing scale build-up, and increasing the overall water efficiency in your home.