South Nowra Surcharge Main - Major Upgrades

• Project StatusIn Progress
• Last reviewed 28 May 2025

About the project

(JPEG, 822KB)

(JPEG, 596KB)

(JPEG, 914KB)

(JPG, 3MB)

(JPEG, 1MB)

(JPG, 343KB)

(JPG, 292KB)

(JPG, 492KB)

(JPG, 5MB)

Project Stages

Options Assessment: Completed in November 2020
The Options Assessment was undertaken to resolve the odours at the intersection of Killara Rd and Old Southern Rd. It was found that the existing system was not performing due to the recent residential developments in the area, and an upgrade of the system was required.

Detailed Designs: Completed in November 2022
The detailed designs compromised of five distinct packages as follows:

• Package 1: Sewer Rising Main between Amalfi Cr and Greenwell Point Rd, Nowra and Sewer Gravity Main between Greenwell Point Rd and Old Southern Rd/ Killara Rd.
• Package 2: New Sewer Pump Station at Ratcliff Park, Greenwell Point Rd, Nowra
• Package 3: Sewer Main in South Nowra (Old Southern Rd, and Browns Rd)
• Package 4: New sewer mains in Worrigee
• Package 5: Emergency storages at various pump station sites.

Review of Environmental Factors (REF): Endorsed in 2022
The REF was placed on Public Exhibition in October 2021
An Addendum REF was required, and was placed on Public Exhibition in May 2024

Construction Works: commenced August 2023 and ongoing.

• Package 1: 1.2km of sewer main has been installed between Amalfi Cr & Greenwell Point Rd Pipe installation is progressing between Old Southern Rd/ Killara Rd & Greenwell Point Rd
• Package 2: Construction of a 9m deep Sewer Pumping Station at the Corner of Greenwell Point Rd and Clipper Rd.
• Package 3: Procurement activities to commence mid 2025
• Package 4: Procurement activities to commence mid 2025
• Package 5: Emergency storages at SPS19, SPS22, and SPS24 are now operational.

Project Progress

• Review of Environmental Factors exhibited and endorsed in 2022
• Detailed designs completed 2022
• Package 1: Works have commenced and are ongoing. Works are anticipated to be completed late 2025. Current Package 1 works include:
  • Continuation of deep gravity mains installation in ratcliff park.
  • Continuation of gravity mains installation between Carrington Park drive to Ratcliff Park.
  • Commencement of gravity main works in Burradoo Crescent.
• Package 2: Works have commenced and are ongoing. Works are anticipated to be completed mid-late 2025. Current Package 2 works include:
  • Continuation of pipework testing.
  • Continuation of backfill placement and compaction.
  • Fitout of electical switchroom complete with site to be connected to power shortly.
  • Civil pavement works are upcoming, as to site fencing.

To received project updates subscribe to this web page below.