Ostrava vs Brno
Water hardness comparison — how the two cities differ and what it means for your home.
HarderFull Ostrava data →
Ostrava
czech republic
188mg/L
Hard Water
13.16°e
Very Hard
Base Unit (CaCO3): 188 mg/LLocal Unit
Side-by-Side Impact
| Impact Area | Ostrava | Brno |
|---|---|---|
| Limescale buildup | Moderate — monthly descaling | Moderate — monthly descaling |
| Boiler/heating risk | Monitor annually | Monitor annually |
| Dishwasher salt setting | High salt setting (3–5) | High salt setting (3–5) |
| Skin & hair impact | Moderate risk | Moderate risk |
| Detergent usage | +15–25% more | +15–25% more |
Key Findings
Hardness Difference: 32 mg/L
Ostrava is meaningfully harder than Brno. Residents moving between these cities should adjust dishwasher salt settings, descaling frequency, and boiler service schedules.