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Perth Water Quality · Mundaring

Water quality in Mundaring

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

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Mundaring supply zone
Moderately hard
98mg/L total hardness (range 96–100)
Water in Mundaring is moderately hard. You may notice some scale over time on kettles and shower screens, but it’s manageable. Carbon filtration improves taste; softening is optional.
Other figures worth knowing
Chlorine by-products (THMs)0.026mg/L
pH8.44
Dissolved solids467mg/L
Sodium113mg/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 Mundaring they run at about 10% of the safety guideline.

What this means for your home

Water in Mundaring is moderately hard. You may notice some scale over time on kettles and shower screens, but it’s manageable. Carbon filtration improves taste; softening is optional.

✓
Our honest take: A carbon filter improves taste and chlorine; scale prevention is a nice-to-have, not essential.
See your filtration options → Learn about hard water
Full water quality breakdown — Mundaring
Scale & hardness
Total hardness9896–100 mg/L as CaCO3
Total dissolved solids467454–480 mg/L
Alkalinity6460–68 mg/L as CaCO3
Silica5.24.7–5.7 mg/L
General chemistry
pH8.448.29–8.58 pH units
Sodium113110–115 mg/L
Chloride203200–205 mg/L
Sulphate3029–30 mg/L
Aesthetic (taste, colour, staining)
Iron0.0070.004–0.01 mg/L
Manganese0.0020.002–0.002 mg/L
Aluminium0.0090.008–0.018 mg/L
True colour11–1 HU
Turbidity0.10.1–0.1 NTU
Health-related
Fluoride0.820.75–0.9 mg/L
Nitrate0.40.4–0.4 mg/L
Trihalomethanes (THMs)0.0260.016–0.035 mg/L
Suburbs in the Mundaring supply area: Chidlow, Gidgegannup, Mount Helena, Mundaring, Sawyers Valley, Wooroloo. Water Corporation reports quality by supply locality rather than individual suburb, so these suburbs share the Mundaring 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. Mundaring 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.