Algae Bloom in Three Nova Scotia Lakes

The Department of Environment and Labour is investigating possible sources of an algae bloom in three Nova Scotia lakes.

Lake Fanning and Parr Lake, in Yarmouth County, and Porcupine Lake in Digby County are affected. The algae's scientific name is cyanobacteria and is commonly known as pond scum.

The department inspectors notified about 35 cottage owners and the operator of the YMCA Camp Wapomeo on Lake Fanning. They recommended the lake not be used for drinking water or bathing.

"Ingesting water containing cyanobacteria can cause stomach ache, diarrhea, vomiting and nausea," said Dr. Rob Strang, acting deputy chief medical officer of health. "Direct contact can cause skin irritation, nose irritation, throat and eye irritation. The health risk is fairly low, but if symptoms persist after a few days, you should consult a physician."

Environment and Labour inspectors sent water samples for lab analysis which determined the presence of the bacteria.

"People should avoid all contact with the water in these lakes," said Dr. Strang. "They should not drink the water or use it to prepare or cook food. Boiling the water will not eliminate the toxins."

Animals could be affected if they drink the water or bathe in it.

Algae blooms are not common in the area. They occur naturally in water that is high in nutrients such as phosphate and nitrate. They may be a result of runoff from household fertilizers, agricultural runoff, or faulty septic systems.

Inspectors from the Department of Environment and Labour are working to determine if there are any large sources of such nutrients that may be the cause of the algae.