08/20/2026
Climate change and Big Ag are fueling toxic blue-green algal blooms in our local ponds, creating a hidden danger for pets and wildlife. ⚠️
These algal blooms often look like spilled bright green paint or thick foam on the water’s surface. They form when cyanobacteria, known as blue-green algae, rapidly multiply in warm, standing water.
Climate change creates the ideal conditions for blue-green algae to outcompete and smother native species. Rising atmospheric CO2 accelerates their growth, while warmer water allows them to move vertically, absorbing nutrients at the bottom and sunlight at the surface, which further fuels their expansion. Climate-driven heavy rains and Big Ag’s excessive use of fertilizer sends large amounts of nitrogen and phosphorus runoff into local ponds, causing larger, longer, and more toxic algae blooms. 🦠‼️
Algal blooms block sunlight and deplete oxygen for native plants and aquatic animals, effectively starving and suffocating them by creating oxygen dead-zones. Their toxins also poison wildlife, leading to dead fish floating to the surface or washing ashore.
You can’t tell if a bloom is toxic just by looking at it, so treat every bloom as dangerous! For humans, exposure can cause stomach pain, eye irritation, dizziness, and other health issues. They also pose a major health hazard for pets. Blue-green algae can produce dangerous toxins that target a dog’s liver or nervous system when they swim in or drink from affected water.
📣 To keep yourself and your pets safe, you can check local conditions or report suspected blooms through the Illinois EPA Algal Bloom Dashboard: https://illinois-epa.maps.arcgis.com/apps/dashboards/e916019b725e4acca7d666e760b74b5f
