New lease on life for century-old Williamstown sewer
Work will commence this month on upgrading Williamstown’s century-old sewer to ensure the local community receives a reliable sewage service for the next 50 years.
Recent inspections of the 100-year-old Williamstown Main Sewer revealed that the sewer is experiencing significant deterioration and groundwater infiltration along its 4.4km length.
Melbourne Water will reline the existing sewer between Pasco Street in Williamstown and Scienceworks in Spotswood and rehabilitate the associated manholes along the alignment.
Melbourne Water Principal Project Manager Nestor Ioannou said the upgrade will ensure a reliable system for the future and ensure the local community continues to receive safe and consistent sewage services.
“Ageing infrastructure poses a risk to public health and safety and must be upgraded to cater for our growing population,” said Mr Ioannou.
“Since 1906 the Williamstown Main Sewer has been removing wastewater from over 7,600 residential and industrial properties in Williamstown, Newport and Spotswood areas and transferring it to the pump station near Scienceworks, and we want to ensure it can continue to provide a reliable service for another 50 years.
“The sewer is located between eight and 15 metres underground. Rather than digging the entire length up, disruption will be minimised by using innovative technology to upgrade the inside of the sewer section by section,” explained Mr Ioannou.
Sewer relining works will be carried out at night to take advantage of low sewage flows, and no impacts to water or sewerage services are anticipated during the rehabilitation works.
As majority of the manholes are located in residential streets, there will be some changes to traffic conditions for motorists, cyclists and pedestrians and some on street parking spaces will be temporarily unavailable. Melbourne Water will work closely with the local community and council to minimise these impacts.
There will be some noise during these works, primarily from truck movements and the use of equipment. Melbourne Water will mitigate this with noise abatement measures wherever feasible, including acoustic mats around work sites and noisy machinery.
The local community will be kept informed through letter drops to households and businesses, newsletters and information sessions, with the project expected to be completed by mid-2018.