A new fact sheet about blue green algae and the health risks to people and animals from exposure to algal toxins is now available. Weather patterns this summer have caused an increase in blue green algae and elevated toxin levels in some Illinois waterbodies. People should avoid contact with water that is discolored (heavy green, blue-green, yellow, brown, or red) or has algal scum on the surface and restrict the access of their pets and livestock to this water. This includes swimming, water skiing, tubing, and boating.