Water quality and your appliances

Different manufacturers of household appliances may refer to water hardness in their instruction manuals. Hardness is an indicator of the ability to get a lather using soap, which is affected by calcium and magnesium salts. Hard water is difficult to lather.

In Australia, water hardness is measured as the concentration of calcium carbonate (CaCO3) in units of milligrams per Litre (mg/L).

Canberra’s water is defined as soft, containing approximately 38 mg/L (or 0.38 mmol/L) as CaCO3 *. 

*based on 2015-16 data.