SEWERAGE capacity woes in Wangaratta that have slowed residential housing are set to ease from late 2024 with a series of strategies to link growth areas to the city's wastewater system.

North East Water (NEW) is in the process of evaluating design options for sewer pump stations, detention storages (underground tanks) and trunk sewers that will link these growth areas in the north–west and south.

It will be an interim fix to the capacity problem caused partly by antiquated sewer lines until a large–scale wastewater treatment plant is built to service new developments for decades to come.

Guy Wilson–Browne, NEW general manager planning and infrastructure, said they are continuing to progress wastewater solutions in Wangaratta to improve the capacity of the city's sewer network and to accommodate growth.

"As part of this, we are working proactively with the Rural City of Wangaratta and developers to plan and deliver essential services," he said.

"We have already installed new pumps and pressure mains that have opened up several development areas where new housing is currently being constructed.

"A number of developers are also installing detention storages in developments under construction in the city's north–west which will help ease pressure on the city's sewer system during storm events.

"We are also developing a servicing strategy to provide sewer infrastructure to the southern and north–west growth areas of Wangaratta."

NEW announced a plan in March last year that would involve developers installing underground tanks on a parcel of land near their developments to store waste for release in the sewerage system during off–peak times.

The tanks are three metres in diameter x 21 metres long and made out of fibreglass, with each tank servicing 115 land lots.

In several years' time once the sewer system capacity is upgraded, the tanks may be removed, they could be incorporated into the longer term solution, or have another use such as stormwater collection.

Mr Wilson–Browne said in the longer term, as part of a major regional master planning program, the water authority is working to develop new, larger infrastructure and upgrades to existing assets to provide sewer capacity to the whole of Wangaratta for generations to come.

He said this phase is a large–scale complex process which will take several years to plan, and then be implemented in stages over several decades.

"We remain committed to investing in the future of the North East region with more than $286 million being invested in new and upgraded water and sewer infrastructure during our 2018–26 pricing plan," he said.

"Our team continues to encourage developers to have early discussions with our team about options for their developments."