Dortmund vs London
Water hardness comparison — how the two cities differ and what it means for your home.
Dortmund
germany
159mg/L
Hard Water
11.13°e
Hard
Base Unit (CaCO3): 159 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 | Dortmund | 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: 118 mg/L
London is significantly harder than Dortmund — a difference that has major household implications. Appliances, boiler warranties, and detergent costs will differ substantially.
Moving from Dortmund to London?
If you're relocating from Dortmund 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.
Compare With Other Cities
Dortmund vs IstanbulDortmund vs MoscowDortmund vs ParisDortmund vs New YorkDortmund vs MadridDortmund vs BarcelonaDortmund vs AnkaraDortmund vs Saint PetersburgLondon vs IstanbulLondon vs MoscowLondon vs ParisLondon vs New YorkLondon vs MadridLondon vs BarcelonaLondon vs AnkaraLondon vs Saint Petersburg