How is the water quality of Millennium Park lakes?
The water quality of the lakes at Millennium Park ranges from very good to excellent. The Parks Department conducted extensive research with regards to hydrology and geology of the park and surrounding area. Results showed that water quality of all lakes in the park system does not pose a health risk to swimmers and boaters. During the swimming season, the water is tested weekly. Test results are available at phone (616) 336-3697.