Water Hardness in Texas (TX)
Texas has an average water hardness of 230 ppm (13.5 grains per gallon), which is classified as Hard . Most households in Texas would benefit from a water softener to protect plumbing and appliances from mineral scale buildup. The estimated annual cost of untreated hard water for Texas households is approximately $10 per year in extra energy, cleaning products, and premature appliance wear. Water hardness varies between cities — from 140 ppm in Dallas to 420 ppm in Midland.
Water Hardness by City in Texas
The table below shows water hardness data for 11 cities in Texas, sorted from hardest to softest. Click any city name for detailed information including water source, treatment recommendations, and estimated hard water costs.
| City | Hardness (PPM) | Grains/Gallon | Level | Water Source | pH | TDS | Utility |
|---|---|---|---|---|---|---|---|
| Midland | 420 ppm | 24.6 gpg | Very Hard | Ground | 8.2 | 680 | City of Midland Utilities |
| Lubbock | 380 ppm | 22.2 gpg | Very Hard | Ground | 8.1 | 620 | City of Lubbock Water Utilities |
| Amarillo | 340 ppm | 19.9 gpg | Very Hard | Ground | 8 | 560 | City of Amarillo |
| El Paso | 300 ppm | 17.5 gpg | Very Hard | Ground | 8 | 500 | El Paso Water |
| San Antonio | 260 ppm | 15.2 gpg | Very Hard | Ground | 7.9 | 420 | San Antonio Water System |
| Austin | 200 ppm | 11.7 gpg | Hard | Surface | 7.8 | 320 | Austin Water |
| Corpus Christi | 190 ppm | 11.1 gpg | Hard | Surface | 7.7 | 305 | City of Corpus Christi Water Department |
| Waco | 175 ppm | 10.2 gpg | Moderately Hard | Surface | 7.6 | 275 | City of Waco Water Utility Services |
| Fort Worth | 160 ppm | 9.4 gpg | Moderately Hard | Surface | 7.6 | 250 | Fort Worth Water Department |
| Houston | 150 ppm | 8.8 gpg | Moderately Hard | Surface | 7.5 | 235 | City of Houston Public Works |
| Dallas | 140 ppm | 8.2 gpg | Moderately Hard | Surface | 7.6 | 220 | Dallas Water Utilities |
Understanding Water Hardness in Texas
Water Sources in Texas
The majority of cities in Texas draw their water from surface sources such as rivers, lakes, and reservoirs. Surface water generally contains fewer dissolved minerals than groundwater, which helps explain the overall hardness profile of the state. Cities that rely on surface water tend to have softer water because the water has less contact time with mineral-bearing rock formations underground.
Hardness Variation Across Texas
Water hardness in Texas ranges from 140 ppm in Dallas to 420 ppm in Midland — a difference of 280 ppm. This variation means that treatment recommendations differ significantly between cities. Residents of Midland and other cities with hard water should seriously consider installing a water softener to protect their homes. At 420 ppm, the annual cost of hard water damage to appliances, plumbing, and increased cleaning product usage can easily exceed $18. Dallas has the softest water in the state, though at 140 ppm it still contains some dissolved minerals.
Recommended Treatment for Texas Water
Based on the average water hardness of 230 ppm in Texas, a water softener is recommended for most households. The most effective treatment options for Texas's water hardness level include:
- Salt-Based Water Softener ($800 - $2,500) — Removes hardness minerals. Highly effective.
- Salt-Free Water Conditioner ($1,000 - $3,000) — Conditions water without removing minerals. Moderately effective.
- Reverse Osmosis System ($200 - $500) — Removes hardness minerals. Highly effective.
- Electronic Descaler ($150 - $400) — Conditions water without removing minerals. Moderately effective.
How Texas Compares to Other States
Below is a comparison of Texas with five states that have similar average water hardness levels. Understanding how your state compares can help you gauge whether your water is typical for the region or unusually hard or soft.
| State | Avg Hardness | Level | Cities |
|---|---|---|---|
| Texas (TX) | 230 ppm | Hard | 11 |
| Florida (FL) | 220 ppm | Hard | 11 |
| Iowa (IA) | 240 ppm | Hard | 8 |
| Nevada (NV) | 240 ppm | Hard | 8 |
| Wisconsin (WI) | 240 ppm | Hard | 10 |
| Minnesota (MN) | 210 ppm | Hard | 9 |
Find Your City's Water Hardness
Use our water hardness lookup tool to find your specific city in Texas, or browse all 50 states to compare water hardness across the country. If your water is hard, visit our treatment solutions guide to find the right softener or conditioner for your home.