The Federal Government has officially opened the upgraded water treatment plant in Tumbarumba, in New South Wales’ southeast.


The opening comes after $4 million was spent on upgrading the plant to secure drinking water for the shire’s population.


"With this new infrastructure, the plant will now be able to process an extra one million litres a day," New South Wales Senator Ursula Stephens said.


"The plant's capacity will increase from an existing two million litres a day to three million litres a day."


The water treatment plant's expanded capacity enables water from Tumbarumba Creek to be used to augment the current water supply from Burra Creek.


The upgrade was conducted under the auspices of the Federal Government’s Water for the Future initiative.