State distribution
Hardness across indexed ZIPs
Counts describe published ZIP profiles, not a population-weighted statewide sample.
Soft · 0–60 PPM70
Moderately hard · 61–120 PPM353
Hard · 121–180 PPM114
Very hard · 181+ PPM204
State water index
Texas water hardness
Search 529 indexed communities and 1,026 ZIP profiles, then compare the underlying utility, source, distance, and reporting context.
Median regional evidence
118PPM
Moderately Hard
Indexed range 5.4–1400 PPM
- ZIP profiles
- 1,026
- Cities
- 529
- Matched utilities
- 537
- Counties
- 220
Understanding Texas
Why local comparisons matter here
Texas contains numerous aquifers, major reservoirs and rivers, Gulf Coastal Plain systems, limestone regions, and arid western basins. Many metros blend several sources.
In this index, moderately hard is the largest category, covering 353 of 741 profiles with hardness data. The state median is 118 PPM, but the full indexed range is 5.4–1400 PPM.
Evidence coverage
What the current records support
- Hardness estimate
- 72%
- Lead 90th percentile
- 100%
- Copper 90th percentile
- 4%
218
Low-confidence hardness profiles
315
Research-comparison eligible profiles
Reported source water
Utility source mix
- Surface water
- 313
- Groundwater
- 222
- Groundwater influenced by surface water
- 2
Highest medians
Highest eligible city medians
- 1. Austin248 PPM
- 2. Wichita Falls199 PPM
- 3. San Antonio159 PPM
- 4. Fort Worth118 PPM
- 5. Arlington118 PPM
Lowest medians
Lowest eligible city medians
- 1. Conroe65 PPM
- 2. Houston67 PPM
- 3. Denton110 PPM
- 4. Garland115 PPM
- 5. Wylie116 PPM
City directory
Explore Texas by city
Search by city or county, then sort by name, hardness, or ZIP coverage.
529 cities · 1,026 ZIP profiles
529 cities found
Page 1 of 23
Abernathy
Hale County · 1 ZIP
325PPM regional
Single regional valueNo active flag
Abilene
Taylor County · 6 ZIPs
183PPM regional
Regional range 177.5–183No active flag
Alamo
Hidalgo County · 1 ZIP
—
No regional sampleNo active flag
Albany
Shackelford County · 1 ZIP
218PPM regional
Single regional valueNo active flag
Alice
Jim Wells County · 1 ZIP
—
No regional sampleNo active flag
Allen
Collin County · 1 ZIP
118PPM regional
Single regional valueNo active flag
Alpine
Brewster County · 2 ZIPs
—
No regional sampleNo active flag
Alto
Cherokee County · 1 ZIP
—
No regional sampleNo active flag
Alvarado
Johnson County · 1 ZIP
107PPM regional
Single regional valueNo active flag
Alvin
Brazoria County · 1 ZIP
51PPM regional
Single regional valueNo active flag
Alvord
Wise County · 1 ZIP
475PPM regional
Single regional valueNo active flag
Amarillo
Potter County · 8 ZIPs
134PPM regional
Regional range 134–248No active flag
Anahuac
Chambers County · 1 ZIP
—
No regional sampleNo active flag
Andrews
Andrews County · 1 ZIP
411PPM regional
Single regional valueNo active flag
Angleton
Brazoria County · 1 ZIP
128PPM regional
Single regional valueNo active flag
Anna
Collin County · 1 ZIP
105PPM regional
Single regional valueNo active flag
Anson
Jones County · 1 ZIP
178PPM regional
Single regional valueNo active flag
Aransas Pass
San Patricio County · 1 ZIP
—
No regional sampleNo active flag
Arlington
Tarrant County · 13 ZIPs
118PPM regional
Regional range 109.5–120No active flag
Arp
Smith County · 1 ZIP
—
No regional sampleNo active flag
Asherton
Dimmit County · 1 ZIP
165PPM regional
Single regional valueNo active flag
Athens
Henderson County · 2 ZIPs
83PPM regional
Regional range 46.9–120No active flag
Atlanta
Cass County · 1 ZIP
72PPM regional
Single regional valueNo active flag
Austin
Travis County · 39 ZIPs
248PPM regional
Regional range 153.4–247.5No active flag
County comparison
Highest regional-evidence county medians
| County | Median | Range | ZIP profiles |
|---|---|---|---|
| Real County | 810 PPM | 219–1400 | 2 |
| Archer County | 561 PPM | 560.5–560.5 | 1 |
| El Paso County | 559 PPM | 559–559 | 18 |
| Cochran County | 551 PPM | 550.5–550.5 | 1 |
| Goliad County | 527 PPM | 527–527 | 1 |
| Lubbock County | 514 PPM | 329–674 | 4 |
| Hockley County | 482 PPM | 482–482 | 2 |
| Wise County | 475 PPM | 97.8–475 | 4 |
| Yoakum County | 473 PPM | 473–473 | 1 |
| Pecos County | 459 PPM | 459–459 | 1 |
| Gaines County | 451 PPM | 411–491 | 2 |
| La Salle County | 442 PPM | 442–442 | 1 |