First early works connection completed for Mount Annan to Sugarloaf water main

On Saturday 30 October, the first connection was made between the newly completed pipeline in William Howe Regional Park, and the existing network which feeds into the Narellan South Reservoir in Mount Annan. There will be multiple points of connection following this event, with the next to occur in just over two weeks time.

To complete the connection, Sydney Water shutdown the reservoir for 24 hours from 7 am on Saturday. This involved closing the valves and flushing water from the existing main. The connection was made without affecting the water supply for Sydney Water customers. It took one hour for the existing capped end to be sawed open, with an additional 4 hours spent welding a new flanged rim to the existing end. The final fitting of the new pipeline was then lifted into position and bolted to the existing main.

The ProMac team has kept the Mount Annan community up to date with the progress of works in William Howe Regional Park. Prior to the connection works commencing, the 12 properties within 100 metres of the works were doorknocked so the team could explain the proposed activities and answer any questions.

This area of pipeline is just one of 18 packages of work within the Prospect to Macarthur (ProMac) program. To date, our contractor Vaughan Civil has installed around 50 percent of the 4,379m pipeline in Menangle Park, William Howe Regional Park and Australian Botanic Garden in Mount Annan.

Welding the flanged rim onto the existing pipeline after the capped end was sawed open. The newly installed pipeline is located bottom left.

Wiping the welded flanged rim with cleaning solution prior to connection of the existing and new pipeline.

What you need to know

The health and wellbeing of Sydney Water crews are our top priority. All crews are adhering to testing, social distancing, and mask wearing requirements.

Members of the public can rest easy knowing that Sydney Water's front line crews are authorised to work safely to continue delivering these essential services for their communities.

We know our work can be disruptive, so we’ll make every effort to reduce any impact this work may have on you. Thank you for your cooperation during this essential work.