**** Via NS Government Blue-green algae Watch for blue-green algae from May to October. Blue-green algae (also called cyanobacteria) occur naturally in surface waters like lakes, ponds, rivers and streams. The toxins in the algae can make people sick and be fatal for pets if ingested.   If you think you see blue-green algae, don’t touch … Continue reading Watch for blue-green algae from May to October