Residents in Avoca, Copacabana and MacMasters Beach are being urged to minimise their water use due to emergency works on the local drinking water supply network.

Central Coast Council crews are working hard to repair a large submerged water main that crosses Avoca Lake.

The water main – which supplies drinking water to the Avoca, Copacabana and MacMasters Beach reservoirs – broke earlier today.

At this stage, crews are expected to be on-site over the next two days to fix the damaged main.

Council is urging residents to conserve water to make sure the current storage levels in these reservoirs can continue to supply these areas if repairs take longer than expected.

Avoca Lake will be opened to lower its water level and then closed again so the repair works can be undertaken.

Council apologises for any inconvenience and thanks the community for their patience during this period.