San Antonio vs Dallas
Water hardness comparison — how the two cities differ and what it means for your home.
HarderFull San Antonio data →
San Antonio
united states
299mg/L
Very Hard Water
20.93°e
Very Hard
Base Unit (CaCO3): 299 mg/LLocal Unit
Dallas
united states
259mg/L
Very Hard Water
18.13°e
Very Hard
Base Unit (CaCO3): 259 mg/LLocal Unit
Side-by-Side Impact
| Impact Area | San Antonio | Dallas |
|---|---|---|
| Limescale buildup | Rapid — visible within weeks | Rapid — visible within weeks |
| Boiler/heating risk | Annual descaling required | Annual descaling required |
| Dishwasher salt setting | Max salt setting (5–7) | Max salt setting (5–7) |
| Skin & hair impact | High eczema/dry skin risk | High eczema/dry skin risk |
| Detergent usage | +30–40% more detergent | +30–40% more detergent |
Key Findings
Hardness Difference: 40 mg/L
San Antonio is meaningfully harder than Dallas. Residents moving between these cities should adjust dishwasher salt settings, descaling frequency, and boiler service schedules.
Compare With Other Cities
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