DRYDEN – The presence of a blue-green algae bloom has been confirmed in Wabigoon Lake, the Northwestern Health Unit reports.
A possible bloom was reported earlier this month on the lake. Results from a sample taken from the Bonny Bay area showed the presence of toxins exceeded Ontario Drinking Water Standard, the health unit said in a statement Tuesday.
The agency also received a report of a second suspected bloom in the Larson Bay area of Wabigoon Lake, it said. That bloom will not be sampled according to Ministry of Environment, Conservation, and Parks policy as a bloom had already been confirmed on the lake.
Residents in the area are advised to avoid drinking, swimming in, or using the water for bathing or other household purposes, the health unit said.
Pets are also vulnerable to the microscopic organisms known as cyanobacteria that make up the blooms.
Cyanobacteria is naturally present in lakes and streams, usually in low numbers, but can rapidly increase in warm, shallow surface water under sunny conditions, forming blooms that can resemble green pea soup or turquoise paint.
Some blue-green algae blooms produce toxins that are harmful to human and animal health when consumed, inhaled, or even from skin contact.
If contact with a bloom does occur, the health unit advises to wash the area with soap and clean water.
Blue-green algae blooms have been relatively rare in Northwestern Ontario, but have become more common in recent years. Health authorities warn the trend could worsen as climate change causes water temperatures to rise.
Residents who spot a suspected blue-green algae bloom can report it to the Spills Action Centre at 1-866-663-8477.
