Porto vs Seville
Water hardness comparison — how the two cities differ and what it means for your home.
HarderFull Seville data →
Seville
spain
219mg/L
Very Hard Water
15.33°e
Very Hard
Base Unit (CaCO3): 219 mg/LLocal Unit
Side-by-Side Impact
| Impact Area | Porto | Seville |
|---|---|---|
| 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 | Low risk | High eczema/dry skin risk |
| Detergent usage | +15–25% more | +30–40% more detergent |
Key Findings
Hardness Difference: 71 mg/L
Seville is meaningfully harder than Porto. Residents moving between these cities should adjust dishwasher salt settings, descaling frequency, and boiler service schedules.
Moving from Porto to Seville?
If you're relocating from Porto to Seville, 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.