Tap water hardness in New South Wales
We have published hardness data for 13 cities in New South Wales. The median is 93 mg/L; the hardest water is in Goulburn (200 mg/L), the softest in Grafton (39 mg/L).
31 % of these cities have hard or very hard water (over 120 mg/L).
Australian Drinking Water Guidelines: aesthetic target ≤ 200 mg/L CaCO₃.
Cities in New South Wales, hardest first
| mg/L | mg/L | ||
|---|---|---|---|
| Goulburn | 200 | 200 | very hard |
| Gunnedah | 169 | 169 | hard |
| Mudgee | 142 | 142 | hard |
| Parkes | 124 | 124 | hard |
| Kempsey | 112 | 112 | moderately hard |
| Casino | 100 | 100 | moderately hard |
| Taree | 93 | 93 | moderately hard |
| Young | 88 | 88 | moderately hard |
| Coffs Harbour | 53 | 53 | soft |
| Newcastle | 53 | 53 | soft |
| Port Macquarie | 50 | 50 | soft |
| Sydney | 47 | 47 | soft |
| Grafton | 39 | 39 | soft |