Improving our wastewater network in Mosman

Sydney Water is working to improve the wastewater network in Mosman.

This is part of Sydney Water’s Wet Weather Internal Surcharge Program which aims to minimise wastewater spills, overflows and drainage issues that occur during wet weather (heavy rains).

What we’ve been working on

• Last year we spoke with residents experiencing issues with drainage and wastewater spills in their homes. This helped us to better understand the problem and develop a solution.
• In 2021, we carried out investigation work in the area to refine a solution; the design has now been finalised and we are planning to start work to repair and upgrade the network.

To make the necessary improvements to the network to avoid future spills and overflows, we will need to install:

• a new wastewater pipe on Glen Street
• six new maintenance holes in the roadway and road verges in Glen Street and Killarney Street.
• work will involve excavating in the roadway and road verges to install the new infrastructure.

What to expect during construction

Noise, dust, and vibration

There will be some noise from the digging and machinery in your street. You may also experience some dust and vibration. We’ll keep noise to a minimum and avoid unnecessary loud noises. We will have measures in place to suppress dust and vibration as much as possible.

Detours and traffic changes

Glen Street will be closed to general traffic for the duration of our work. We will maintain pedestrian access at all times.

Signage and temporary traffic lights will be in place to guide traffic along the detour routes.

For more details on traffic changes, you can view our Traffic Management Plan in the 'Documents library'.

Changes to site compound location

We previously advised that we need to establish a site compound at Stan McCabe Park.

Based on your feedback, we have since reassessed the site compound location and will no longer be establishing a site compound at Stan McCabe Park.

We will store all our equipment and amenities within the construction area on Glen Street. We thank you for your feedback on this and hope this will help to minimise impacts to the community during our work