The Environmental Protection Agency found dangerous levels of cancer-causing Polychlorinated Biphenyls (PCBs) in fish from Lake Crabtree and Brier Creek.
Public health officials said eating fish, especially carp and catfish, from those waters could be dangerous. They said a superfund clean-up site upstream is to blame.
Officials said exposure to PCBs may increase the risk of developing cancer, infections and skin problems. In infants, exposure may cause learning problems.
The EPA and the state are still working on a clean-up plan, but it could be years before the fish are safe to eat again.
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