Perth Water Quality · Hamilton Hill
Water quality in Hamilton Hill
Your local water hardness and the full breakdown of 16 parameters, sourced from Water Corporation's 2024–25 report.
Updated with Water Corporation 2024-25 data.
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Covers: Beaconsfield, Beeliar, Bibra Lake, Cockburn, Coogee, Coolbellup, Fremantle, Hamilton Hill, Henderson, Hilton, Lake Coogee, Munster, North Coogee, North Lake, O'Connor, Samson, South Fremantle, South Lake, Spearwood, White Gum Valley, Yangebup
These figures are about taste, scale and appliance life — not safety. Is Perth tap water safe to drink? →
Hamilton Hill supply zone
Soft water
56mg/L total hardness (range 43–69)
Water in Hamilton Hill is naturally soft. You likely don’t need softening — scale build-up should be minimal. A sediment and carbon filter still improves taste and reduces chlorine.
Other figures worth knowing
Chlorine by-products (THMs)0.059mg/L
pH7.85
Dissolved solids273mg/L
Sodium65mg/L
Perth's water is disinfected with free chlorine at roughly 0.4–1.0 mg/L network-wide. The figure above is trihalomethanes (THMs) — by-products of chlorination that a catalytic carbon filter reduces. In Hamilton Hill they run at about 24% of the safety guideline.
What this means for your home
Water in Hamilton Hill is naturally soft. You likely don’t need softening — scale build-up should be minimal. A sediment and carbon filter still improves taste and reduces chlorine.
✓Our honest take: You probably don’t need a softener. A 3-stage filter still helps with chlorine taste and sediment.
Full water quality breakdown — Hamilton Hill
Scale & hardness
Total hardness5643–69 mg/L as CaCO3
Total dissolved solids273156–389 mg/L
Alkalinity4837–58 mg/L as CaCO3
Silica3.11.9–4.2 mg/L
General chemistry
pH7.857.79–7.91 pH units
Sodium6530–99 mg/L
Chloride11355–170 mg/L
Sulphate115–17 mg/L
Aesthetic (taste, colour, staining)
Iron0.0330.02–0.045 mg/L
Manganese0.0050.004–0.005 mg/L
Aluminium0.0080.008–0.01 mg/L
True colour11–1 HU
Turbidity0.20.2–0.2 NTU
Health-related
Fluoride0.820.75–0.9 mg/L
Trihalomethanes (THMs)0.0590.032–0.1 mg/L
About this supply area: Water Corporation reports quality by supply locality rather than individual suburb, so the suburbs listed at the top of this page all share the Hamilton Hill figures. Your exact property may vary slightly. Water Corporation doesn’t publish supply boundaries street-by-street, so matching suburbs to localities involves some interpretation — homes near a boundary may actually be served by a neighbouring locality, and figures there can differ slightly.
Source: Water Corporation Drinking Water Quality Annual Report 2024–25, Perth Region (aesthetic & health tables). Figures are locality means with min–max range. Verified July 2026. Hamilton Hill met all health-related safety requirements in 2024–25. See all Perth suburbs →