Perth Water Quality · Mandurah
Water quality in Mandurah
Your local water hardness and the full breakdown of 16 parameters, sourced from Water Corporation's 2023–24 report.
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Mandurah supply zone
Soft water
54mg/L total hardness (range 50–56)
Water in Mandurah is naturally soft. You likely don’t need softening — scale build-up should be minimal. A sediment and carbon filter still improves taste and removes chlorine.
Other figures worth knowing
Chlorine by-products (THMs)0.018mg/L
pH8.47
Dissolved solids147mg/L
Sodium22mg/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 Mandurah they run at about 7% of the safety guideline.
What this means for your home
Water in Mandurah is naturally soft. You likely don’t need softening — scale build-up should be minimal. A sediment and carbon filter still improves taste and removes 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 — Mandurah
Scale & hardness
Total hardness5450–56 mg/L as CaCO3
Total dissolved solids147141–153 mg/L
Alkalinity5146–56 mg/L as CaCO3
Silica1.41–1.9 mg/L
General chemistry
pH8.478.04–8.79 pH units
Sodium2220–24 mg/L
Chloride3836–42 mg/L
Sulphate21–4 mg/L
Aesthetic (taste, colour, staining)
Iron0.010.003–0.02 mg/L
Manganese0.0020.002–0.004 mg/L
Aluminium0.0250.016–0.03 mg/L
True colour11–1 HU
Turbidity0.10.1–0.2 NTU
Health-related
Fluoride0.820.75–0.9 mg/L
Nitrate0.4?–1.8 mg/L
Trihalomethanes (THMs)0.0180.001–0.077 mg/L
Suburbs in the Mandurah supply area: Coodanup, Dudley Park, Erskine, Falcon, Greenfields, Halls Head, Lakelands, Madora Bay, Mandurah, Meadow Springs, San Remo, Silver Sands, Wannanup. Water Corporation reports quality by supply locality rather than individual suburb, so these suburbs share the Mandurah figures above. Your exact property may vary slightly.
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Source: Water Corporation Drinking Water Quality Annual Report 2023–24, Perth Region (aesthetic & health tables). Figures are locality means with min–max range. Verified June 2026. Mandurah met all health-related safety requirements in 2023–24. See all Perth suburbs →
Complete Home Filtration and CHF are trademarks used by Environmental Water Solutions Pty Ltd. ProperWater is not affiliated with, endorsed by, or sponsored by Complete Home Filtration or Environmental Water Solutions Pty Ltd. Model references including CHF-6000 and CHF-6200 are used solely to indicate product compatibility — PW Series replacement filters are independently designed for compatibility with standard 15" × 4.5" filter housings. All comparative pricing based on Complete Home Filtration's publicly published rates as of 2025.