A swimming advisory has been issued for Moose Beach at Tudhope Park in Orillia.
The Simcoe Muskoka District Health Unit says bacteria levels in the water are higher than normal.
During a swimming advisory, the beach is not closed but it is posted with warning signs for increased risk of developing minor skin irritations and infections.
Swimming advisories have also been issued for Washago Centennial Park Beach and Minet's Point Park Beach in Barrie.
