August 15 - Confirmed Blue-Green Algae Bloom on Three Mile Lake and Clark's Falls area of Lake Rosseau.

The Simcoe Muskoka District Health Unit (SMDHU) has been advised by the Ministry of Environment, Conservation and Parks (MECP) that laboratory tests have confirmed the presence of a blue-green algae bloom in Three Mile Lake and the Clark Falls area of Lake Rosseau. For more information visit the Health Unit's press release. 

Eposure to blue-green algae, whether for drinking, swimming, bathing, cooking or through eating fish caught from the lake, can result in illness. Affected residents are being asked not to use the water for drinking or food preparation, including breastmilk substitute (infant formula). Swimming and other water sport activities should also be avoided in areas where the blue-green algae bloom is visible.

Some varieties of blue-green algae are capable of producing toxins that can be harmful to humans and animals. Boiling the water will not destroy the toxins, and home treatment systems should not be relied on.

Adverse health effects are mainly caused by drinking or coming into water that is contaminated with blue-green algae toxins. Symptoms from consuming toxins can include headaches, fever, diarrhea, abdominal pain, nausea and vomiting, and can be more serious if water is swallowed in large quantities.

To learn more about blue-green algae visit the health unit website at, or call Health Connection weekdays from 8:30 a.m. to 4:30 p.m. at 705-721-7520 or 1-877-721-7520.

Wednesday, August 1, 2018
w3cP.O. Box 129, 1 Bailey St., Port Carling, Ontario, P0B 1J0  Phone:(705)765-3156  Fax:(705)765-6755
Municipal Office hours: Monday to Friday 8:15 a.m. to 4:00 p.m. (excluding holidays)