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23 August 2019

Coliban Water is planning targeted treatment dosing and flushing works in parts of the Castlemaine water supply network from next Tuesday 27 August 2019.

Urban Services Manager Carl Oliver said these routine works will be carried out in the areas of Yapeen, Guildford and Campbells Creek and should be complete by Thursday 29 August 2019.

“We have contacted these residents by mail to let them know about the upcoming works which are part of the broader 12 month trial period for chlorination treatment across the Castlemaine water supply network. We are now more than nine months into this period.

“The reason for these routine flushing works is to ensure disinfection is meeting requirements at the extremeties of the supply network, which is made up of long lengths of water main and several storage tanks to reach all of the towns which we provide a treated water supply to,” Mr Oliver said.

There will be no interruption to water supply however customers may notice a change to the water taste and odour during the works period. The water continues to be safe to drink and meets the requirements of the Australian Drinking Water Guidelines. 

“The water quality results from the trial period are showing that the chlorination treatment overall is performing well across the network,” Mr Oliver said.

Adjustments to the chlorine dosing rate were made at the Castlemaine Water Treatment Plant in January 2019 following feedback that some customers were experiencing strong chlorine taste and odour. 

“Customers may have noticed the difference at that time due to the lowered dose of chlorine added at the plant.

“We continue to monitor chlorine dosing rates, especially as we approach the warmer months, to ensure that seasonal fluctuations do not have a greater impact on customers,” Mr Oliver said.

“At the end of the 12 month trial period, a decision will be made regarding this treatment process going forward. If chlorination is not the chosen treatment method, it is likely we would revert back to the previous treatment method of chloramination. 

“Further investigations and knowledge gained from the trial, as well as consideration of future capital works, will help us make this decision.”

For more information about the chlorination treatment trial please visit the planned works and interruptions page of our website at or call our Customer Support Team 
on 1300 363 200 (1300 COLIBAN). 

Last updated on 23 Aug 2019
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