The construction of four new or upgraded wastewater trunk mains in the Mount Barker area is required to ensure the collection network has the required capacity to cater for growth. The trunk mains are needed to enable the provision of an essential public health service and to satisfy legal obligations entered into with a number of developers in the Mount Barker growth area to supply development sites with a sewer service. The Nairne trunk sewer, completed in April 2025, was the first to be delivered followed by the Mount Barker CBD Sewer Trunk Main Project (nearing completion), and followed by the Central and Eastern Stage Two projects.

The CBD Sewer Trunk Main project is nearing the finish line, with most sections along the route completed and reopened.

Connection and commissioning works are now underway, as are minor defect rectification activities which may require temporary closures, and pedestrian detours may be in effect.

The temporary use of Dunn Park Oval as a laydown area has now finished, with all materials and equipment removed from the site. The area has been tidied and reinstated, including levelling, applying topsoil, and hydroseeding to establish grass. Hydro-seeding has been applied to assist with dust suppression over the wetter months to give the new grass the est chance to establish.

The Contractor responsible for installing the pipes as part of the Sewer Trunk Main Program of Works is BMD Construction, and they have appointed Andrea Shaw of CPR Communications to assist with community and stakeholder relations, and to keep directly impacted parties informed about the works.

Projects and works

We’re continually working to future-proof your water and wastewater services. We are committed to investing in major infrastructure projects across our service area. Through our capital and minor works programs, we’re addressing growing demand and securing water supplies. This includes constructing new infrastructure and upgrading existing assets—renewing water and sewer pipelines and enhancing treatment plants. Investing in infrastructure is vital to maintaining reliable services for our communities today and for generations to come. As we plan for future growth, we’re also progressing toward our goal of 100% reuse. By embracing innovative technologies and sustainable practices, we’re improving plant efficiency, enhancing water quality, and delivering better environmental outcomes.