2015/17 – Bolon (Queensland) – Sodium, Total Dissolved Solids, pH

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Bolon (Queensland) – Sodium

2015/16:  Bolon (Queensland)  Sodium 228mg/L (maximum), 226mg/L (average)

2016/17:  Bolon (Queensland)  Sodium 230mg/L (maximum), 226mg/L (average)

http://www.balonne.qld.gov.au/documents/43835162/3fd01eb5-d54f-47c8-a82c-6fde19dd1c50

http://www.balonne.qld.gov.au/documents/43835162/3d39e5fe-8f36-4754-aa09-f889052d34f9

“Based on aesthetic considerations (taste), the concentration of sodium in drinking water
should not exceed 180 mg/L….The sodium ion is widespread in water due to the high solubility of sodium salts and the abundance of mineral deposits. Near coastal areas, windborne sea spray can make an important contribution either by fallout onto land surfaces where it can drain to drinking water sources, or from washout by rain. Apart from saline intrusion and natural contamination, water treatment chemicals, domestic water softeners and
sewage effluent can contribute to the sodium content of drinking water.” ADWG 2011

Bolon – Queensland – Total Dissolved Solids

2015/16: Bolon (Queensland) – Total Dissolved Solids 577mg/L (Maximum Level) 572mg/L (average)

2015/16: Bolon (Queensland) – Total Dissolved Solids 573mg/L (Maximum Level) 567.75mg/L (average)

http://www.balonne.qld.gov.au/documents/43835162/3fd01eb5-d54f-47c8-a82c-6fde19dd1c50

http://www.balonne.qld.gov.au/documents/43835162/3d39e5fe-8f36-4754-aa09-f889052d34f9

GUIDELINE

“No specific health guideline value is provided for total dissolved solids (TDS), as there are no
health effects directly attributable to TDS. However for good palatability total dissolved solids
in drinking water should not exceed 600 mg/L.

Bolon (Queensland) – pH (alkaline)

2016/17: Average pH: 8.54 pH units

http://www.balonne.qld.gov.au/documents/43835162/3d39e5fe-8f36-4754-aa09-f889052d34f9

Based on the need to reduce corrosion and encrustation in pipes and fittings, the pH of
drinking water should be between 6.5 and 8.5.

New concrete tanks and cement-mortar lined pipes can significantly increase pH and
a value up to 9.2 may be tolerated, provided monitoring indicates no deterioration in
microbiological quality.

pH is a measure of the hydrogen ion concentration of water. It is measured on a logarithmic scale from 0 to 14. A pH of 7 is neutral, greater than 7 is alkaline, and less than 7 is acidic.

One of the major objectives in controlling pH is to minimise corrosion and encrustation in pipes and fittings. Corrosion can be reduced by the formation of a protective layer of calcium carbonate on the inside of the pipe or fitting, and the formation of this layer is affected by pH, temperature, the availability of calcium (hardness) and carbon dioxide. If the water is too alkaline (above pH 8.5), the rapid deposition and build-up of calcium carbonate that can result may eventually block the pipe.