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Perth Water Quality · South Perth/Kewdale

Water quality in South Perth/Kewdale

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

← All Perth suburbs
South Perth/Kewdale supply zone
Moderately hard
97mg/L total hardness (range 72–110)
Water in South Perth/Kewdale 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)0.105mg/L
pH7.8
Dissolved solids542mg/L
Sodium125mg/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 South Perth/Kewdale they run at about 42% of the safety guideline.

What this means for your home

Water in South Perth/Kewdale 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 — South Perth/Kewdale
Scale & hardness
Total hardness9772–110 mg/L as CaCO3
Total dissolved solids542519–568 mg/L
Alkalinity125120–140 mg/L as CaCO3
Silica1716–18 mg/L
General chemistry
pH7.87.66–7.97 pH units
Sodium125115–130 mg/L
Chloride180175–185 mg/L
Sulphate2522–28 mg/L
Aesthetic (taste, colour, staining)
Iron0.040.01–0.07 mg/L
Manganese0.0070.002–0.012 mg/L
Aluminium0.0080.008–0.008 mg/L
True colour11–1 HU
Turbidity0.10.1–0.2 NTU
Health-related
Fluoride0.820.75–0.85 mg/L
Nitrate1.30.4–1.8 mg/L
Trihalomethanes (THMs)0.1050.046–0.13 mg/L
Suburbs in the South Perth/Kewdale supply area: Ascot, Belmont, Burswood, Carlisle, Cloverdale, Como, Karawara, Kensington, Kewdale, Lathlain, Manning, Redcliffe, Rivervale, Salter Point, South Perth, Victoria Park, Waterford, Welshpool. Water Corporation reports quality by supply locality rather than individual suburb, so these suburbs share the South Perth/Kewdale 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. South Perth/Kewdale 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.