WASHINGTON (AP) — Bruce Holmes, 65, grew up fishing on the Anacostia River, a 9-mile (14-kilometer) urban waterway that flows through Washington, D.C. and parts of Maryland, and has long been defined by pollution and neglect.

Back then, Holmes would keep what he caught with his family — usually carp or catfish — and take it home to fry. It was the 1970's, and he didn't know how contaminated the water was.

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