The Waterwise Towns program is being rolled-out across Western Australia's south-west and Great Southern regions, with thousands expected to save water and money.

Waterwise Towns is an initiative of the WA Water Corporation, and is being introduced across the regions to provide valuable, personalised advice to around 3000 local residents.

The Water Corporation’s plan will also spend around $400,000 to reduce water use by retrofitting over 400 homes and 100 businesses with water saving devices.

WA’s Minister for Water, Mia Davies, says household is eligible to sign up within the defined region for this phase of the plan.

She says the scheme has lofty goals.

“We're trying to ... reduce water [use] by 10 per cent and the aim is to save 250 million litres over the next 12 months in the Great Southern and south-west with the rollout of that Waterwise Towns program.”

The ten eligible towns include Collie, Gnowangerup, Katanning, Kojonup, Narrogin, Tambellup and Wagin.

“The Water Corporation is going to be writing in April to all the residents in these communities and offering for them to register their interest in being involved in taking part in personal one-on-one coaching and there'll be also resources and practical advice provided,” Ms Davies said.