Skip to main content

Upcoming infrastructure projects

Western Water is investing in innovative capital projects across our service area to keep pace with the region’s growing population.

On this page you will find a non-exhaustive list of projects that Western Water is planning.

The list provides an indication of possible future projects, but should not be relied upon for tendering purposes. To see and respond to tenders or expressions of interests, please visit the Buying for Victoria portal.

Grant Street Sewer Pump Station, sewer rising main and water main

Planning is currently under way for a major sewerage upgrade in the southern end of Bacchus Marsh. The project also includes a section of water main to bolster the water supply in the Parwan area. The new infrastructure will cater for population growth in Maddingley to the west and the area south of Grant Street.

  • Grant Street Sewer Pump Station: Capacity upgrade to replace the existing sewer pump station in the reserve at the corner of Grant Street and Peelmans Lane, from 35 litres per second to interim upgrade of 100 litres per second (with an ultimate upgrade of 145 litres per second). This involves the construction of a new 9m deep precast concrete segmental wet well, mechanical and electrical fit out, and a 6.5m deep emergency storage tank.
  • Grant Street Sewer Rising Main: Construction of an 8km sewer rising main, 375/600mm diameter, commencing at the pump station on Peelmans Lane and traversing Grant Street, Parwan Road, Geelong–Bacchus Marsh, Exford Road and Parwan Road South before connecting to the Bacchus Marsh Recycled Water Plant. It includes the trenchless crossing of the Ballarat rail line.
  • East Maddingley Water Main: Construction of a new 800m polyethylene water main, 280mm diameter, from Griffith Street to East Maddingley Road. Water pipe will be laid alongside sewer pipe in the same trench along part of the construction alignment, mainly along Parwan Road between Mitchem Road and East Maddingley Road.

The project may be delivered as separate contracts.

Melton Recycled Water Plant to Bacchus Marsh Recycled Water Plant pipeline

Western Water has commenced planning for the construction of a 13.5km recycled water pipeline, 600mm diameter, between the Bacchus Marsh and Melton recycled water plants.

This is a new pipeline that will enable the transfer of excess recycled water between both plants. It traverses through mainly private land and includes a crossing at the Werribee River. A pump station will also be constructed at each end of the pipeline—at Bacchus Marsh RWP (approx. 85 L/s) and Melton RWP (400 L/s ).

The project will be split into separate contracts for delivery.

Melton Recycled Water Plant—Winter storage upgrade

Western Water has begun planning to upgrade the storage capacity of the plant’s recycled water ponds by an additional 1,000 megalitres. The pond’s internal dimensions are approximately 400m x 400m and 10m high. It is likely to be clay lined and connected to a new pump station via one 900mm underground pipe.

Sunbury Outfall Sewer duplication

Western Water is planning for the construction of a duplicate sewer that will transfer sewage from the corner of Powlett and Brook Street to the Sunbury Recycled Water Plant on Harker Street. 1.3km of 750mm diameter gravity sewer pipe will be constructed beside the existing sewer main, which was built in 1975 and is now nearing capacity.

Sunbury Bald Hill to Diggers Rest water main

Planning is under way for a new water pipe from ‘Bald Hill’ in Sunbury to development land in Diggers Rest. The project involves the laying of 600mm pipe in the road reserve along Moore Road, Sunbury, and a 375mm pipe from Moore Road to land just west of Bloomdale Estate. Work also involves boring underneath the Calder Freeway.

Sunbury redundancy pumps at Loemans Road and Shepherds Lane Water Pump Stations

This project involves the installation of redundancy pumps at our Loemans Road and Shepherds Lane Water Pump Stations in Sunbury.

The Shepherds Lane WPS will include the installation of a permanent pump as well as the replacement of an existing pump with vertical mounted pumps. This includes changes to suction and discharge pipework and the inclusion of additional valving and electrical connections.


Eynesbury Sewer Rising Main replacement

This project involves the partial replacement of a 280-metre section of the existing sewer rising main at Eynesbury township near Melton. Temporary bypass pumping will be required during the works.


Merrimu Water Filtration Plant fluoridation system upgrade

This project involves the upgrade of the Merrimu Water Filtration Plant’s existing system with a sodium fluoridation system. The project will be delivered as a design and construct contract.


Instagram Updates

Email Notifications & Updates