The Lake Wyangan Water Sustainability project will pump water from Griffith's Water Reclamation Plant and along a new pipeline, all the way to Lake Wyangan. It's hoped that the pipeline flushing water through will help address the blue-green algae that's been plaguing the lake.

The project will include the pipeline, along with a new UV disinfection unit, modifications to the chlorine contact tank and reclaimed water tank and a reclaimed water pump station.

The project is currently budgeted to cost just under 7 million dollars, out of the 108 million dedicated to the 40 new projects under the National Water Grid Connections funding.

Duty MLC for Murray, Wes Fang said that the project's benefits would ripple out.

"During droughts the reclaimed water will replace evaporated water from Lake Wyangan South, ensuring farmers can extract water on a continuous basis," he explained.

"By providing more reliable access to water the project has the potential to increase crop yields and revenue for landholders across the region ... The benefits of this won't stop at the farm gate, instead flowing on to boost the wider local economy."

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It's estimated that the new infrastructure will allow over 6 megalitres to flow into Lake Wyangan every day.

The North Lake will be retained as a purely recreational lake, while the South Lake will remain as a working lake.

Water from several sources (including the reclamation plant) will be mixed within the South Lake to a quality suitable for irrigation of farms to the North West.

The project falls under the NSW Connections Package and will work alongside the Walcha Off-Stream Water Storage, West Wyalong Water Reliability project, Broken Hill to Menindee Graziers Pipeline and Urbenville Water Supply projects.

Construction is expected to be finished in early 2023.

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