Minnesota’s lakes and rivers contain pharmaceutical drugs and chemicals, according to a new follow-up study by the Minnesota Pollution Control Agency. Environmental Scientist Mark Ferrey says they found 27 chemicals in lakes, and 56 chemicals downstream in rivers near wastewater treatment plants.

http://wnax-am.sagacom.com/wp-content/blogs.dir/108/files/2015/06/FERREY-603A.mp3

That includes several hormones, caffeine, nicotine, and the insect repellent DEET. An earlier study found similar results. Ferrey says one surprise is that the same chemicals were found in lakes and rivers nowhere near wastewater treatment plants, apparently coming from unexpected sources.