Laurenson's Lake in Kenora and Thunder Lake in Dryden are two spots were health unit staff are reporting sightings of algae. Since blue-green algae can be toxic, samples are being tested.

"People and pets should avoid contact with water that is discolored or has scum on the surface. If contact does occur, wash with soap and water or rinse thoroughly with clean water to remove algae. Water not visibly affected by a blue-green algae bloom rarely causes health effects for swimming and household contact, such as bathing or showering but some people may be sensitive," it says in a media relese from the health unit.

If you spot a bloom, report it to the Spills Action Centre at 1-800-268-6060

For more information

Ministry of Environment - Blue-green algae