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Perth · Sourced from Water Corporation 2023–24

What's actually in your water?

Type your suburb to see your local water quality — hardness, what it means for your home, and the full breakdown. Figures come from your water utility's official report — not estimates.

See all 8 capitals ranked by hardness →

Verified June 2026 · 28 Perth supply localities

    All 28 Perth localities

    Tap any row to see its full breakdown.

    LocalityHardnessRatingTDSpH

    About this data

    Source: Water Corporation Drinking Water Quality Annual Report 2023–24. Figures are annual means for each supply locality. Verified June 2026.

    How we match your suburb: Water is reported by supply locality / zone, not individual suburb. Your suburb is matched to the zone that supplies it, so neighbouring suburbs on the same supply read the same.
    Every Perth locality met the Australian Drinking Water Guidelines’ health limits. Hardness and taste are aesthetic — they affect appliances and flavour, not safety.

    Common questions about Australian city water

    Which Australian capital cities use chloramine?

    Sydney, Adelaide and Brisbane use chloramine across their networks, as do Melbourne’s western and growth suburbs (Greater Western Water). Perth, Canberra, Hobart, Darwin and Melbourne’s eastern and south-eastern suburbs use free chlorine. It matters because chloramine needs catalytic carbon to remove, while free chlorine is handled by any standard carbon filter.

    Which capital city has the hardest water?

    Adelaide and parts of Perth have the hardest mains water — Adelaide around 100–130 mg/L, with some Perth groundwater zones higher still. Brisbane is moderately hard in its inner zones. Melbourne, Sydney, Hobart, Canberra and Darwin are all soft, generally under 50 mg/L.

    Is tap water fluoridated in every Australian capital?

    Yes. Every Australian capital fluoridates within the 0.6–1.1 mg/L range recommended for dental health, well below the 1.5 mg/L ADWG limit. Reverse osmosis is the effective option if you want to reduce fluoride.

    Where does this water quality data come from?

    Each city’s figures come from the responsible utility’s own annual drinking water quality report — Water Corporation, Sydney Water, Melbourne Water and its retailers, SA Water, Seqwater, Icon Water, TasWater and Power & Water. Where a utility doesn’t publish a figure (such as Darwin’s TDS and pH), it is shown as “not published” rather than estimated.

    Do I actually need a water filter?

    It depends on your city. In soft, chlorine-treated cities like Melbourne, Hobart and Canberra, filtering is mainly about taste. In hard-water cities like Adelaide and Perth, scale is the bigger concern. In chloramine cities you need catalytic carbon rather than a standard jug filter.