Alberta Health Services (AHS) has issued a health advisory for a private community lake in Calgary’s southeast.

AHS says cyanobacterial (blue-green algal) bloom toxins have been identified in the waters of Lake Sundance.

Cyanobacteria are naturally occuring and blooms are more common during periods of warm weather.

“They’re getting more frequent, because their summers are getting longer. They’re getting hotter,” explained University of Calgary scientist Marc Strous.

“And there’s nutrients in these lakes, so it’s an ideal situation for these blooms to occur.”

The blooms can take on several colours, including blue-green, greenish-brown, brown, pink…

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