Analysis of water hardness in major Australian cities by the Australian Water Association shows a range from very soft (Melbourne) to hard (Adelaide).
Total hardness levels of calcium carbonate in ppm are:
*Canberra: 40
* Melbourne: 10&ndash;26
* Sydney: 39.4&ndash;60.1
* Perth: 29&ndash;226
* Brisbane: 100
* Adelaide: 134&ndash;148
* Hobart: 5.8&ndash;34.4
* Darwin: 31