SPRINGFIELD, Ill. (WBBM NEWSRADIO) -- The Illinois Environmental Protection Agency and Department of Public Health are warning people about swimming in lakes, ponds, rivers, and streams, as the temperatures climb.
This is a seasonal warning, as warming water creates ideal conditions for cyanobacteria, also known as blue-green algae. The microscopic organisms occur naturally in water and soil.
Rapid growth in warm water is known as a bloom, and while most are harmless, some can be toxic and adversely affect people and animals. Symptoms rashes, hives, diarrhea, vomiting, coughing, or wheezing.
The Illinois Department of Public health said if the water looks suspicious, stay away.
It may look like spilled green blue-green paint. There may be a film or streaks on the surface, a blue or green crust on the shore, or suspended green globs just below the surface.
Do not allow animals to drink this water. If a dog drinks water like this, a visit to the vet is advised.
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