London vs Bristol
Water hardness comparison — how the two cities differ and what it means for your home.
HarderFull London data →
London
united kingdom
277mg/L
Very Hard Water
19.39°e
Very Hard
Base Unit (CaCO3): 277 mg/LLocal Unit
Bristol
united kingdom
195mg/L
Hard Water
13.65°e
Very Hard
Base Unit (CaCO3): 195 mg/LLocal Unit
Side-by-Side Impact
| Impact Area | London | Bristol |
|---|---|---|
| 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 | Moderate risk |
| Detergent usage | +30–40% more detergent | +15–25% more |
Key Findings
Hardness Difference: 82 mg/L
London is meaningfully harder than Bristol. Residents moving between these cities should adjust dishwasher salt settings, descaling frequency, and boiler service schedules.
Moving from Bristol to London?
If you're relocating from Bristol 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.