Geeveston/Kermandie (Tasmania) – Trichloroacetic Acid :
25/6/14: Trichloroacetic Acid: 170μg/L
Australian Guideline Level Trichloroacetic Acid 100μg/L
“Chloroacetic acids are produced in drinking water as by-products of the reaction between chlorine and naturally occurring humic and fulvic acids. Concentrations reported overseas range up to 0.16mg/L and are typically about half the chloroform concentration.
The chloroacetic acids are used commercially as reagents or intermediates in the preparation of a wide variety of chemicals. Monochloroacetic acid can be used as a pre-emergent herbicide, dichloroacetic acid as an ingredient in some pharmaceutical products, and trichloroacetic acid as a herbicide, soil sterilant and antiseptic.” Australian Drinking Water Guidelines – National Health and Medical Research Council…
Geeveston – Tasmania – Temperature
January 20 2016: Geeveston (Tasmania) – Temperature 20.6C
January 27 2016: Geeveston (Tasmania) – Temperature 21.2C
February 3 2016: Geeveston (Tasmania) – Temperature 20.3C
February 3 2016: Geeveston (Tasmania) – Temperature 20.8C
February 10 2016: Geeveston (Tasmania) – Temperature 21C
February 10 2016: Geeveston (Tasmania) – Temperature 20.6C
February 17 2016: Geeveston (Tasmania) – Temperature 20.7C
February 23 2016: Geeveston (Tasmania) – Temperature 20.9C
February 23 2016: Geeveston (Tasmania) – Temperature 22.2C
March 2 2016: Geeveston (Tasmania) – Temperature 20.6C
March 2 2016: Geeveston (Tasmania) – Temperature 20.7C
GUIDELINE
“No guideline is set due to the impracticality of controlling water temperature.
Drinking water temperatures above 20°C may result in an increase in the number of
complaints.
Temperature is primarily an aesthetic criterion for drinking water. Generally, cool water is more palatable than warm or cold water. In general, consumers will react to a change in water temperature. Complaints are most frequent when the temperature suddenly increases.
The turbidity and colour of filtered water may be indirectly affected by temperature, as low water temperatures tend to decrease the efficiency of water treatment processes by, for instance, affecting floc formation rates and sedimentation efficiency.
Chemical reaction rates increase with temperature, and this can lead to greater corrosion of pipes and fittings in closed systems. Scale formation in hard waters will also be greater at higher temperatures…
Water temperatures in major Australian reticulated supplies range from 10°C to 30°C. In some long, above-ground pipelines, water temperatures up to 45°C may be experienced…
The effectiveness of chlorine as a disinfectant is influenced by the temperature of the water being dosed. Generally higher temperatures result in more effective disinfection at a particular chlorine dose, but this may be counterbalanced by a more rapid loss of chlorine to the atmosphere (AWWA 1990).