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Blue-green algae bloom risk advisory extended to Lake Banook

Lake Banook is seen in this file photograph.
Lake Banook is seen in this file photograph. Whitney Middleton-Oickle/Global News

The Halifax Regional Municipality is advising residents that due to the presence of a possible blue-green algae bloom in Lake Micmac, the risk advisory is being extended to Lake Banook.

READ MORE: Public advised to avoid swimming in Lake Micmac due to blue-green algae

In a news release Wednesday, the Halifax Regional Municipality advised residents to avoid swimming and prevent pets from entering the lake, including at Birch Cove Beach, which will remain closed until further notice.

Blue-green algae, or cyanobacteria, is a natural freshwater algae. During the summer, it grows rapidly and extensively, also known as a bloom.

Residents raise concerns about the health of Dartmouth’s lakes
Residents raise concerns about the health of Dartmouth’s lakes

The risk advisory has been issued because some types of the algae can produce toxins that are harmful to people and pets.

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The city issued an initial advisory for Lake Micmac on July 3. Risk advisories are issued based on a number of factors, including the visual observation of algae blooms, test results and information regarding the current life-cycle phase of algae blooms.