Australian Water Quality Reports by Postcode | Tappwater
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What's really in your tap water?

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2,864 postcodes 23 water zones 8 states 100% free
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Quick comparison
CityAuthorityDisinfectionHardnessPFAS
Sydney Sydney Water Chloramine
Soft (~43 mg/L)
 Detected → Melbourne Melbourne Water Chlorine
Very soft (~12 mg/L)
 Trace → Brisbane Urban Utilities Chloramine
Moderate (~80 mg/L)
 Detected → Perth Water Corporation Chlorine
Hard (~185 mg/L)
 Low → Adelaide SA Water Chloramine
Moderate (~95 mg/L)
 Not detected → Canberra Icon Water Chlorine
Soft (~43 mg/L)
 Not detected → Darwin Power & Water Chlorine
Soft
 Environmental → Hobart TasWater Chlorine + UV
Very soft (<10 mg/L)
 Not detected →
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Sydney
New South Wales
Chloramine Soft PFAS detected
10 dams feeding one of Australia's most complex water networks. Chloramine-treated with trace PFAS and microplastics detected.
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Melbourne
Victoria
Chlorine Very soft Trace contaminants
Protected mountain catchments deliver some of the purest tap water in the world. Minimal treatment needed.
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Brisbane
Queensland
Chloramine Moderate PFAS detected
Three treatment plants serving 1.5M people. Chloramine-disinfected with moderate hardness and PFAS from QLD contamination sites.
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Perth
Western Australia
Chlorine Hard Low PFAS
Australia's hardest water — 40% desalinated, 10% recycled groundwater. Scale buildup is a common household complaint.
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Adelaide
South Australia
Chloramine Moderate PFAS not detected
River Murray-fed with desalination backup. Moderate hardness, chloramine-treated, with no PFAS detected in drinking supply.
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Canberra
Australian Capital Territory
Chlorine Soft PFAS not detected
Some of Australia's softest, cleanest tap water. Mountain catchments, chlorine-only, and no PFAS detected.
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Darwin
Northern Territory
Chlorine Soft Environmental PFAS
Tropical water supply with seasonal quality changes between wet and dry. PFAS contamination near RAAF Base, not in drinking water.
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Hobart
Tasmania
Chlorine + UV Very soft PFAS not detected
Award-winning taste. Softest water in Australia from pristine mountain sources. Aging pipes can cause occasional discolouration.
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Browse by state
Find your water supply zone
NSW
New South Wales
980 postcodes
VIC
Victoria
698 postcodes
QLD
Queensland
492 postcodes
WA
Western Australia
268 postcodes
SA
South Australia
192 postcodes
TAS
Tasmania
112 postcodes
NT
Northern Territory
72 postcodes
ACT
Australian Capital Territory
32 postcodes