Test samples have confirmed blue-green algae on Muskrat Lake in Cobden.
As a result, the Township of Whitewater Region has closed the Cobden Beach for swimming and recreational purposes.
Signs have been posted at the Cobden, Muskrat River and Cornerview/Faught boat launches.
The Ontario Clean Water Agency continues to collect water samples and is ensuring treatment protocols are in place at the Cobden Water Treatment Plant.
While a blue-green algae bloom has been detected in the lake, the municipal drinking water is still safe to drink and there is no public health risk for residents of Cobden who are on the municipal drinking water system.