The swimming pool at West Kirby Concourse is closed after ceiling tiles fell to the floor.
It’s understood the incident happened on Monday, and that nobody was hurt.
A subsequent inspection identified issues that needed further investigation, requiring the pool to be emptied and scaffolding to be erected.
On Facebook, the Council’s leisure services team said: “The swimming pool at West Kirby Concourse has been closed for unforeseen essential maintenance.
“We are in the process of contacting customers who are booked onto swimming sessions, lessons and classes in the next few days.
“We’re sorry about the inconvenience and will share updates as soon as we can.
“Swimming sessions are available at our other pools, with timetables on our website.”
The rest of the Concourse is open as normal.