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Western Australia drinking water

251 localities across 6 regions, compared within each region. Data source: Water Corporation of WA 2023-2024 Annual Report.

Each pin is a Water Corporation supply locality. Open the full map →

Perth Region

28 localities

  • Hardness 96 mg/L (as CaCO₃)
  • Total Dissolved Solids (TDS) 400 mg/L
  • Chloride 142 mg/L
  • Sodium 85 mg/L

Mid West Region

51 localities

  • Hardness 134 mg/L (as CaCO₃)
  • Total Dissolved Solids (TDS) 671 mg/L
  • Chloride 275.2 mg/L
  • Sodium 164.8 mg/L

Goldfields and Agricultural Region

60 localities

  • Hardness 103 mg/L (as CaCO₃)
  • Total Dissolved Solids (TDS) 475 mg/L
  • Chloride 196.9 mg/L
  • Sodium 112.7 mg/L

South West Region

35 localities

  • Hardness 84 mg/L (as CaCO₃)
  • Total Dissolved Solids (TDS) 324 mg/L
  • Chloride 98.2 mg/L
  • Sodium 58.5 mg/L

Great Southern Region

59 localities

  • Hardness 101 mg/L (as CaCO₃)
  • Total Dissolved Solids (TDS) 324 mg/L
  • Chloride 110.9 mg/L
  • Sodium 58.9 mg/L

North West Region

18 localities

  • Hardness 171 mg/L (as CaCO₃)
  • Total Dissolved Solids (TDS) 511 mg/L
  • Chloride 88.9 mg/L
  • Sodium 66.3 mg/L