AquaScaleEurope

Rotterdam vs New York

Water hardness comparison — how the two cities differ and what it means for your home.

Harder

Rotterdam

netherlands

83mg/L

Moderately Hard Water

5.81°e
Medium
Base Unit (CaCO3): 83 mg/LLocal Unit
Full Rotterdam data →

New York

united states

52mg/L

Soft Water

3.64°e
Soft
Base Unit (CaCO3): 52 mg/LLocal Unit
Full New York data →

Side-by-Side Impact

Impact AreaRotterdamNew York
Limescale buildupMinimalMinimal
Boiler/heating riskLow riskLow risk
Dishwasher salt settingLow setting (1–2)Low setting (1–2)
Skin & hair impactLow riskLow risk
Detergent usageStandard doseStandard dose

Key Findings

Hardness Difference: 31 mg/L

Rotterdam is meaningfully harder than New York. Residents moving between these cities should adjust dishwasher salt settings, descaling frequency, and boiler service schedules.

Compare With Other Cities