Cecil Hills - Liverpool Reservoir achieves operational completion

On 2 February 2022, Sydney Water’s contractor Saunders has achieved operational completion on the new 60ML reservoir at the Liverpool Reservoir facility in Cecil Hills.


The reservoir is part of the Prospect to Macarthur (ProMac) project which is securing drinking water for the expanding communities in the South West Growth Area and Western Sydney Aerotropolis Growth Area. At Liverpool Reservoir, work is continuing to build a new drinking water pipeline, pumping station and re-chlorination plant.


The reservoir will be temporarily used as back-up storage to the existing tank until it is connected to the new ProMac water main in March. The new tank doubles the water storage capacity at the Liverpool Reservoir facility.


To ensure the tank was leak free before commencing service, Saunders undertook a final fill to 100% capacity throughout late January. This involved filling the tank in 20% increments over a three week period. At each increment, water was held for 24-hours and monitored.


The tank stands 13 metres high and is 80 metres in diameter, and can hold more than 24 Olympic-sized swimming pools worth of drinking water. 530 tonnes of steel were used in its construction and 15,000 litres of paint were applied to the interior and exterior.

The new reservoir will feed the main pipeline which travels up to the Cecil Park Reservoir. It will additionally feed pipelines within the wider ProMac network. The ProMac project is anticipated for completion in late 2023.


The new tank doubles the water storage capacity at the Liverpool Reservoir facility


Internal view of the reservoir, which is 13 metres high and is 80 metres in diameter


The roof is approximately 5000m² of surface area


15,000 litres of paint were applied to the interior and exterior


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.

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