2016/17 – Nangwarry (South Australia) – Mercury, Hardness

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Nangwarry (South Australia) – Mercury

August 16 2016 – Nangwarry (South Australia) – Mercury 0.00329mg/L

Mercury: Australian Drinking Water  Guideline 0.001mg/L

Mercury, if it enters the ecosystem can transform into the more toxic methylmercury where it can bioaccumulate. Methylmercury is highly toxic to human embryos, fetuses, infants and children. Mercury has numerous sources including old gold mines, where mercury was used in gold recovery process. It has been estimated that 950 tonnes of
mercury was deposited into Victorian soil, rivers and streams during the various gold rushes.

Nangwarry – South Australia

August 16 2016: Nangwarry (South Australia) – Calcium Hardness 325mg/L

November 8 2016: Nangwarry (South Australia) – Calcium Hardness 362mg/L

February 28 2016: Nangwarry (South Australia) – Calcium Hardness 330mg/L

May 23 2016: Nangwarry (South Australia) – Calcium Hardness 330mg/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.”

Australian Drinking Water Guidelines 2011