Originally aired Apr. 21, 2009 as an episode of the public television series Frontline.

"More than three decades after the Clean Water Act, two iconic waterways -- the great coastal estuaries of Puget Sound and the Chesapeake Bay -- are in perilous condition. With polluted runoff still flowing in from industry, agriculture and massive suburban development, scientists fear contamination to the food chain and drinking water for millions of people. A growing list of endangered species also is threatened in both estuaries. [This film] examines the rising hazards to human health and the ecosystem and why it's so hard to keep our waters clean."--Container. Introduction -- Imperiled Chesapeake Bay -- Once we cared-- -- One of the biggest pollution sources? -- Regulating the poultry industry -- The startling new contaminants -- What we don't know -- Puget sound, hot spot for PCB's -- Seattle's Duwamish River -- A lesson from South Park -- #1 menace to waterways -- Save the forest, save the waters -- D.C.'s development sprawl -- Arlington, Va. : a showcase for smart growth--Credits.