The Centers for Disease Control and Prevention issued a report Tuesday that there is not enough evidence to connect industrial dumping contamination throughout the Great Lakes to specific health threats.
Last year, a draft version of the same report was leaked to the press.
That version linked records of historical contamination and ongoing pollution with health databases documenting cancer rates and other diseases.
Although the recent report avoids the specific links, it does stress that industrial pollution poses risks to public health and the environment. In fact, scientists have documented many areas around the Great Lakes contaminated with such highly toxic substances as PCBs, mercury and dioxins.