Beginning in the 1940s, industrial facilities and wastewater treatment plants on the Saginaw River, Michigan, released PCBs (polychlorinated biphenyls) and related compounds into the Saginaw River. Because of on-site contamination, releases from the facilities continued after PCBs were banned in the 1970s. These releases also damaged the Saginaw Bay ecosystem. Saginaw Bay is one of the prime walleye fishing and waterfowl hunting areas in the Great Lakes and also drains into Lake Huron. Contamination has impacted fish and wildlife in the Saginaw River and Bay, resulting in advisories against human consumption of fish for all species of fish in the River and many species of fish in the Bay. Also, bald eagle reproduction is significantly lower in these areas than is found in less contaminated areas.
Additional case information can be found on the FWS trustee's website at: http://www.fws.gov/midwest/es/ec/nrda/saginawNRDA/