2007/22 – Kalkarindji/Wave Hill (Northern Territory) – Hardness

Kalkaringi (Northern Territory) Hardness

2007/08: Kalkaringji Hardness 252mg/L

2008/09: Kalkarindji Hardness 262mg/L

2009/10: Kalkarindji Hardness 276mg/L

2010/11: Kalkarindji Hardness 262mg/L

2013/14: Kalkarindji Hardness 251mg/L

2015/16: Kalkarindji Hardness 260mg/L

2016/17: Kalkarindji Hardness 276mg/L

2021/22: Kalkarindji Hardness 300mg/L


“To minimise undesirable build‑up of scale in hot water systems, total hardness (as calcium
carbonate) in drinking water should not exceed 200 mg/L.

Hard water requires more soap than soft water to obtain a lather. It can also cause scale to form on hot water pipes and fittings. Hardness is caused primarily by the presence of calcium and magnesium ions, although other cations such as strontium, iron, manganese and barium can also contribute.”