The City of Casey and the Victorian Health and Human Services Building Authority (VHHSBA) have been working together to identify a proposed location for.
The hospital welcomed 3833 babies in 2020, while 3888 were born there in 2019.
Health services chief executive Jason Payne said Werribee Mercy Hospital’s birthing numbers had remained steady over the past two years because the birthing suites were unable to accommodate any more expectant mums.
He said at the moment, some pregnant women within the Werribee Mercy Hospital catchment are using services at public hospitals outside the area.
“The demand exists for Werribee Mercy Hospital to deliver more babies locally but this cannot occur without expanded facilities,” Mr Payne said.
“It would be preferable that local families had access to more of the best high quality and safe public birthing services at Werribee Mercy Hospital, so they don’t have to travel,” he said.