Man-made chemicals, from cocaine to DEET to pharmaceuticals, are finding their way into Minnesota lakes in ways that no one understands, according to an analysis released today from the Minnesota Pollution Control Agency.
Fifty lakes analyzed last year by state scientists contained at least some of 125 different chemicals. DEET, the insect repellent, was the most common, found in 76 percent of them.
Only three of the 50 lakes were chemical-free.
Plastic byproduct Bisphenol A was found in nearly half of the lakes analyzed and cocaine was found in a third. The...