The North Bay Parry Sound District Health Unit (Health Unit) is advising residents to be cautious after a harmful algae bloom, also known as blue-green algae, was observed in Callander Bay, and confirmed through testing samples taken on August 10, 2026, by the Ministry of the Environment, Conservation and Parks.

For more information about harmful algae, visit Blue-green Algae | North Bay Parry Sound District Health Unit

Cyanobacteria (Blue Green Algae) FAQ Page.