Ostrava vs London
Water hardness comparison — how the two cities differ and what it means for your home.
Ostrava
czech republic
188mg/L
Hard Water
13.16°e
Very Hard
Base Unit (CaCO3): 188 mg/LLocal Unit
HarderFull London data →
London
united kingdom
277mg/L
Very Hard Water
19.39°e
Very Hard
Base Unit (CaCO3): 277 mg/LLocal Unit
Side-by-Side Impact
| Impact Area | Ostrava | London |
|---|---|---|
| Limescale buildup | Moderate — monthly descaling | Rapid — visible within weeks |
| Boiler/heating risk | Monitor annually | Annual descaling required |
| Dishwasher salt setting | High salt setting (3–5) | Max salt setting (5–7) |
| Skin & hair impact | Moderate risk | High eczema/dry skin risk |
| Detergent usage | +15–25% more | +30–40% more detergent |
Key Findings
Hardness Difference: 89 mg/L
London is meaningfully harder than Ostrava. Residents moving between these cities should adjust dishwasher salt settings, descaling frequency, and boiler service schedules.
Moving from Ostrava to London?
If you're relocating from Ostrava to London, 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.