Perth vs New York
Water hardness comparison — how the two cities differ and what it means for your home.
HarderFull Perth data →
Perth
australia
202mg/L
Very Hard Water
14.14°e
Very Hard
Base Unit (CaCO3): 202 mg/LLocal Unit
New York
united states
52mg/L
Soft Water
3.64°e
Soft
Base Unit (CaCO3): 52 mg/LLocal Unit
Side-by-Side Impact
| Impact Area | Perth | New York |
|---|---|---|
| Limescale buildup | Rapid — visible within weeks | Minimal |
| Boiler/heating risk | Annual descaling required | Low risk |
| Dishwasher salt setting | Max salt setting (5–7) | Low setting (1–2) |
| Skin & hair impact | High eczema/dry skin risk | Low risk |
| Detergent usage | +30–40% more detergent | Standard dose |
Key Findings
Hardness Difference: 150 mg/L
Perth is significantly harder than New York — a difference that has major household implications. Appliances, boiler warranties, and detergent costs will differ substantially.
Moving from New York to Perth?
If you're relocating from New York to Perth, 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.