2007/17 – Gulin Gulin/Bulman (Northern Territory) – Hardness

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Gulin Gulin/Bulman (Northern Territory) Hardness

2007/08: Bulman Hardness 336mg/L

2008/09: Bulman Hardness 322mg/L

2009/10: Gulin Gulin Hardness 316mg/L

2010/11: Gulin Gulin Hardness 315mg/L

2013/14: Bulman Hardness 308mg/L

2015/16: Gulin Gulin Hardness 311mg/L

2016/17: Bulman Hardness 296mg/L

GUIDELINE

“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.”

Australian Drinking Water Guidelines 2011