Cyanobacteria

• City of Lethbridge taking proactive approach to blue-green algae

  After an extended advisory period for cyanobacteria at a lake in Lethbridge last year, the city took a proactive approach to mitigate the issue this summer.

  Environment

  Jul 23, 2025
  
• Blue-green algae advisory issued for Wabamun Lake ahead of August long weekend

  Lakegoers are advised to avoid all contact with blue-green algae, but AHS said areas of Wabamun Lake where the blooms are not visible can still be used for recreational purposes.

  Environment

  Aug 4, 2023
  
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• “We’ve been finding them everywhere:” HRM holds blue-green algae info session

  The algae can cause itchiness, rashes, and hives in people, but it can be fatal to pets. Experts say people should supervise their animals closely when outdoors near water.

  Environment

  Jul 29, 2023
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• Blue-green algae health warnings issued for 3 lakes in Nicola region

  According to IH, cyanobacteria can produce several types of toxin that can be poisonous to people, pets and livestock.

  Canada

  Jul 28, 2023
• Warning signs posted of algae bloom in Wood Lake, B.C.

  The public notices say lake users should not make contact with the algae bloom, but, if they do, to rise your body with clean water. Swimming is also discouraged.

  Health

  Jun 18, 2022
• Algae blooms part of nature, but can be harmful: Interior Health

  Interior Health says blue-green algae or cyanobacteria can produce several types of toxins that can be poisonous to people, pets or livestock.

  Health

  May 3, 2022
• Missisquoi Bay struggles to deal with decades-old cyanobacteria contamination

  Residents of Philipsburg on Missisquoi Bay south of Montreal say things are changing in the water, and they blame blue-green algae.

  Environment

  Sep 1, 2021
• Interior Health deems algae bloom on Wood Lake a low health risk to public

  Interior Health says while the bloom contains blue-green algae, testing indicates the risk to the public remains low.

  Environment

  May 14, 2021
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• Province launches website to help identify algae blooms in B.C. lakes

  A water quality specialist says most algae blooms are harmless, but some produce toxins that can be dangerous to people, pets or livestock.

  Environment

  May 12, 2021
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• Large algal bloom in Shuswap Lake being monitored, says Interior Health

  “At this time of year, algal blooms are known to occur in many of the lakes, ponds, and wetlands found throughout the Interior region of B.C.”

  Aug 11, 2020