Austin, Texas water hardness
Utility: Austin Water. Metro: Austin-Round Rock.
| Measure | Value |
|---|---|
| Hardness as CaCO3 (mg/L or ppm) | 93 mg/L average, 70 to 126 mg/L |
| Hardness (grains per gallon) | 5.4 gpg average, 4.1 to 7.4 gpg |
| USGS class on this site | moderately hard |
| Data year | 2025 |
| Retrieved | 2026-11-09 |
Source: Austin Water Annual Water Quality Report 2025. Open the source.
Primary table: Total Hardness (as CaCO3) low 70 [4.1 gpg] high 126 [7.4] average 93 [5.4]. Report states one grain per gallon equals approximately 17.1 ppm.
What this means at home
Hard water can leave scale on fixtures and appliances and can reduce soap lather. It is not listed as a health contaminant on EPA’s secondary standards list. A softener or whole-house filter is a purchase decision based on your fixtures, taste preferences, and a test of your own tap, not on a city average alone.
Product research placeholders
- SpringWell whole-house systems: #TODO-affiliate-springwell
- Aquasana filtration: #TODO-affiliate-aquasana
- SoftPro softeners: #TODO-affiliate-softpro