(NECN: Anya Huneke, Montpelier, VT.) - They're a source of beauty and recreation -- the lakes and reservoirs found in Vermont and across the country.
But they're also showing the effects of years of pollution, and have become sites of contamination, according to a new federal report.
This week the Environmental Protection Agency released the 'National Study of Chemical Residues in Lake Fish Tissue,' which identified toxic chemicals - predominantly mercury - in fish tested in all states in the continental U.S.