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Perth Water Quality · Yanchep

Water quality in Yanchep

Your local water hardness and the full breakdown of 16 parameters, sourced from Water Corporation's 2023–24 report.

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Yanchep supply zone
Very hard water
204mg/L total hardness (range 190–220)
Water in Yanchep is very hard — among the hardest in Perth. Limescale will build up quickly on appliances and hot water systems. Scale prevention is well worth it here.
Other figures worth knowing
Chlorine by-products (THMs)0.053mg/L
pH7.64
Dissolved solids576mg/L
Sodium82mg/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 Yanchep they run at about 21% of the safety guideline.

What this means for your home

Water in Yanchep is very hard — among the hardest in Perth. Limescale will build up quickly on appliances and hot water systems. Scale prevention is well worth it here.

✓
Our honest take: Scale prevention is strongly worth it here — it meaningfully extends the life of your hot water system and appliances.
See your filtration options → Learn about hard water
Full water quality breakdown — Yanchep
Scale & hardness
Total hardness204190–220 mg/L as CaCO3
Total dissolved solids576559–605 mg/L
Alkalinity174160–210 mg/L as CaCO3
Silica1918–20 mg/L
General chemistry
pH7.647.27–7.9 pH units
Sodium8277–85 mg/L
Chloride157145–165 mg/L
Sulphate1413–15 mg/L
Aesthetic (taste, colour, staining)
Iron0.0170.008–0.05 mg/L
Manganese0.0070.003–0.02 mg/L
Aluminium0.0080.008–0.008 mg/L
True colour11–1 HU
Turbidity0.30.1–0.6 NTU
Health-related
Fluoride0.840.75–0.95 mg/L
Nitrate7.56.6–8.4 mg/L
Trihalomethanes (THMs)0.0530.017–0.087 mg/L
Suburbs in the Yanchep supply area: Capel, Eglinton, Two Rocks North, Yanchep. Water Corporation reports quality by supply locality rather than individual suburb, so these suburbs share the Yanchep figures above. Your exact property may vary slightly.

Check a different suburb

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. Yanchep 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.