Cohuna water treatment upgrades complete

Coliban Water has completed a major upgrade to its Cohuna Water Treatment Plant and Water Reclamation Plant, which included replacing clear water storage tanks and lagoon bases.

Coliban Water Manager Infrastructure Delivery Corey Bourne said the $3 million upgrades were a major investment in Cohuna’s water and sewer infrastructure and will accommodate future growth in the town.

“The $1.8 million project to replace the clear water storage tank at the Cohuna Water Treatment Plant with two 1.35ML tanks has nearly doubled the plant’s water storage capacity,” Mr Bourne said.

“The increased storage will improve the security of the water supply for around 1,400 commercial and residential customers.

“It will also ensure the plant can meet demand during peak periods and that there is additional water in reserve in the event of an outage.

Mr Bourne said construction work on the two tanks began in February 2016 and was completed in June.

“There are some minor reinstatement works still to be done at the site, including planting native shrubs along the fenceline to provide some screening and make the area more visually appealing,” Mr Bourne said.

Upgrade works at the Cohuna Water Reclamation Plant were also completed in June.

Mr Bourne said the major part of the $1.2 million project involved earthworks to rebuild the embankments and re-compact the base of two of the four lagoons.

“The lagoons are used for the biological treatment of wastewater. The plant was built in the 1960s and the embankments and bases had deteriorated over time.

“We have re-compacted the lagoon bases to the ideal density for the treatment process to take place.

“The works will improve the efficiency and extend the life of the plant, and ensure we continue to meet Environment Protection Authority Victoria guidelines,” Mr Bourne said.

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