Overshadowed by PFAS, PCBs Remain A Toxic Threat To Chesapeake Waters
"Polychlorinated biphenyls, or PCBs, haven’t been produced since 1979, after studies found that exposure to them could cause a variety of harmful health effects, including cancer. But they were so widely used before then and so long-lasting that they still impair water quality in much of the tidal Chesapeake Bay and its tributaries."











