Work has been completed on WA’s new 3.4 kilometre pipeline, which joins the Denmark River Dam to the Quickup Dam.

The pipeline will let water from Quickup boost Denmark's summer supply, at a time when the nearby town's demands hit almost a million litres of water a day.

For now, engineers are moving water from the Denmark River Dam – which is currently overflowing - to bring Quickup to capacity.

WA Water Minister Mia Davies said the state’s Water Corporation is now looking at installing portable desalination units as back-up.

“It's not going to be necessary to desalinate the water that's going to [be] transferred from the Denmark River Dam at the moment but we still are progressing works on the portable desalination units,” she said.

“We have a number of options being looked at by the Water Corporation.

“There will be community consultation before we put the solution in place, so the community can rest assured that before any work is done on final solutions the community will be consulted.”