Mundaring Weir Water Supply Improvement Project

Mundaring Weir, completed in 1902, has historically been the main source of water for the Goldfields and Agricultural Water Supply Scheme (GAWS). The scheme currently supplies water to more than 100,000 people from Mundaring to Kalgoorlie.

Whilst there have been a number of upgrades to the Weir and its associated infrastructure over the years, parts of the facility are more than 100 years old and require upgrading in order to meet increasing water demands and current Australian Drinking Water Guidelines.

The Mundaring Weir Water Supply Improvement Project involves the construction of several new assets at or near Mundaring Weir between 2010 and 2014; including a water treatment plant, pump station, pipelines, upgrades to the Weir itself as well as improvements to the Precinct.

Given the significance of Mundaring Weir to Western Australia as a tourist destination with thousands of visitors every year, the Water Corporation will liaise closely with key stakeholders and the community to ensure these works are planned and managed well.

A key component of the Mundaring Weir Water Supply Improvement Project is the provision of a water treatment plant.

In February 2008, following an extensive 18 month community consultation process, the Water Corporation announced that the Department of Environment and Conservation (DEC) Perth Hills District Office & Depot site, situated off Mundaring Weir Road, had been selected as the location for the new water treatment plant. The DEC had a long term plan to replace and upgrade its Perth Hills office and depot facilities, and this decision meant that the timing for this has been brought forward.

The Water Corporation reached further milestones in December 2009 when both the Federal and State governments granted environmental approval to build the new water treatment plant on this site.

Plans to undertake further environmental, social and heritage assessment work for all components of the Mundaring Weir Water Supply Improvement Project are currently underway. Community input will be sought during this process to ensure that all possible impacts are considered and that management plans are put in place.

In addition, the Water Corporation is currently seeking Federal and State environmental approval on behalf of the DEC to relocate its Perth Hills district office and depot facilities to the southern portion of the existing site.

To view the referral and supporting documentation for the DEC Perth Hills District Office & Depot relocation, select the Environmental Referral Documents link in the 'More Information' box on this page.

The water treatment plant is scheduled to be operational in 2013.

For further information contact Community Engagement Officer Jacqui Caldwell on 9420 3506.