Dallas vs Houston
Water hardness comparison — how the two cities differ and what it means for your home.
HarderFull Dallas data →
Dallas
united states
259mg/L
Very Hard Water
18.13°e
Very Hard
Base Unit (CaCO3): 259 mg/LLocal Unit
Houston
united states
137mg/L
Hard Water
9.59°e
Hard
Base Unit (CaCO3): 137 mg/LLocal Unit
Side-by-Side Impact
| Impact Area | Dallas | Houston |
|---|---|---|
| Limescale buildup | Rapid — visible within weeks | Moderate — monthly descaling |
| Boiler/heating risk | Annual descaling required | Monitor annually |
| Dishwasher salt setting | Max salt setting (5–7) | High salt setting (3–5) |
| Skin & hair impact | High eczema/dry skin risk | Low risk |
| Detergent usage | +30–40% more detergent | +15–25% more |
Key Findings
Hardness Difference: 122 mg/L
Dallas is significantly harder than Houston — a difference that has major household implications. Appliances, boiler warranties, and detergent costs will differ substantially.
Moving from Houston to Dallas?
If you're relocating from Houston to Dallas, expect visible limescale on taps and shower heads within weeks. You'll need to recalibrate your dishwasher's salt setting, increase kettle descaling frequency, and check your boiler warranty requirements. A shower filter and under-sink scale inhibitor are worth considering immediately.