The Municipality of the District of St. Mary's is advising residents and visitors of Blue-Green Algae (Cyanobacteria) found within the Municipality of the District of St. Mary's. Currently as of today, July 16th, 2025 the only confirmed site in the Municipality, as listed on the environment website, is Indian Harbour Lake (Bloom as of June 2025). 
What You Should Know:
Blue-Green Algae can produce toxins that may be harmful to humans, pets, and wildlife. Avoid contact with the water in the affected area, and do not allow pets to swim or drink from the lake.
Stay Informed:
For more information on Blue-Green Algae and to view a list of locally impacted areas, please visit the provincial website: novascotia.ca/blue-green-algae
the Municipality will continue to monitor the situation and provide updates as necessary. Thank you for your cooperation in helping to keep our community safe.
If you think you see blue-green algae, you should treat it as potentially toxic. Report it to your local Department of Environment and Climate Change office or call 1-877-936-8476.