text: 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