Water hardness in Australia
307 cities with published hardness data, sorted by population. Median: 85 mg/L.
Median
85 mg/L
moderately hard
- 112 soft
- 121 moderately hard
- 43 hard
- 31 very hard
Australian Drinking Water Guidelines: aesthetic target ≤ 200 mg/L CaCO₃.
Water hardness by postcode in Australia
Ranking of the hardest and softest water in Australia →
Regions
Largest places, hardest first
Every place is listed on its region page.
| mg/L | mg/L | ||
|---|---|---|---|
| Esperance · Western Australia | 340 | 340 | very hard |
| Karratha · Western Australia | 280 | 280 | very hard |
| Albany · Western Australia | 255 | 255 | very hard |
| Port Hedland · Western Australia | 218 | 218 | very hard |
| Goulburn · New South Wales | 200 | 200 | very hard |
| Kingaroy · Queensland | 173 | 173 | hard |
| Dalby · Queensland | 162 | 162 | hard |
| Newman · Western Australia | 150 | 150 | hard |
| Mudgee · New South Wales | 142 | 142 | hard |
| Bendigo · Victoria | 121 | 121 | hard |
| Geraldton · Western Australia | 119 | 119 | moderately hard |
| Brisbane · Queensland | 117 | 117 | moderately hard |
| Adelaide · South Australia | 114 | 114 | moderately hard |
| Kempsey · New South Wales | 112 | 112 | moderately hard |
| Maryborough · Queensland | 107 | 107 | moderately hard |
| Kalgoorlie · Western Australia | 105 | 105 | moderately hard |
| Casino · New South Wales | 100 | 100 | moderately hard |
| Perth · Western Australia | 95 | 95 | moderately hard |
| Taree · New South Wales | 93 | 93 | moderately hard |
| Gladstone · Queensland | 91 | 91 | moderately hard |
| Young · New South Wales | 88 | 88 | moderately hard |
| Australind · Western Australia | 85 | 85 | moderately hard |
| Logan City · Queensland | 80 | 80 | moderately hard |
| Mount Isa · Queensland | 75 | 75 | moderately hard |
| Gympie · Queensland | 73 | 73 | moderately hard |
| Emerald · Queensland | 72 | 72 | moderately hard |
| Capalaba · Queensland | 68 | 68 | moderately hard |
| Victoria Point · Queensland | 68 | 68 | moderately hard |
| Redland Bay · Queensland | 68 | 68 | moderately hard |
| Cleveland · Queensland | 68 | 68 | moderately hard |
| Bundaberg · Queensland | 65 | 65 | moderately hard |
| Warrnambool · Victoria | 64 | 64 | moderately hard |
| Hervey Bay · Queensland | 59 | 59 | soft |
| Sunshine Coast · Queensland | 58 | 58 | soft |
| Caloundra · Queensland | 58 | 58 | soft |
| Maroochydore · Queensland | 58 | 58 | soft |
| Nambour · Queensland | 58 | 58 | soft |
| Caboolture · Queensland | 57 | 57 | soft |
| North Lakes · Queensland | 57 | 57 | soft |
| Coffs Harbour · New South Wales | 53 | 53 | soft |
| Newcastle · New South Wales | 53 | 53 | soft |
| Mandurah · Western Australia | 50 | 50 | soft |
| Port Macquarie · New South Wales | 50 | 50 | soft |
| Broome · Western Australia | 48 | 48 | soft |
| Sydney · New South Wales | 47 | 47 | soft |
| Mildura · Victoria | 43 | 43 | soft |
| Shepparton · Victoria | 42 | 42 | soft |
| Grafton · New South Wales | 39 | 39 | soft |
| Gold Coast · Queensland | 38 | 38 | soft |
| Moranbah · Queensland | 37 | 37 | soft |
| Melbourne · Victoria | 18 | 18 | soft |
| Frankston East · Victoria | 18 | 18 | soft |
| Echuca · Victoria | 17 | 17 | soft |