Local MP Alan Mak has restated his opposition after Southern Water officially submitted its plans for water recycling at the new Havant Thicket reservoir.
The reservoir is being built by Portsmouth Water in partnership with Southern Water, which is now also seeking permission for what it calls the Hampshire Water Transfer and Water Recycling Project.
This £1.3bn project would involve wastewater from Budds Farm Wastewater Treatment Works being used to top up the new reservoir.
A water recycling plant would be built close to Budds Farm and treat wastewater before pumping it to the reservoir at Havant Thicket, where it would mix with water drawn from Bedhampton springs.
Mr Mak has consistently opposed the plan because he says the technology is unproven in the UK and there is a lack of confidence in Southern Water to operate the scheme.
The Labour Government’s Environment Secretary will make the final decision on whether to allow water recycling.
Mr Mak said: "I support the building of the reservoir as it will help to secure our future water supplies.
"But residents have expressed concerns about the potential impact of water recycling on the quality of our water and I share their concerns.
"I have consistently made representations highlighting these concerns and will continue my work in Parliament and locally to oppose this recycled water scheme and represent the views of Havant constituents.
"This has included launching a petition calling on the Labour Government's Environment Secretary to refuse the water recycling plan."
To sign the petition, go to https://www.alanmak.org.uk/WaterRecycling
