Follow divers in the Puget Sound for a close-up view of the untreated stormwater pumped into the Puget Sound. In "Poisoned Waters," correspondent Hedrick Smith reveals startling new evidence that today's growing environmental threat comes not from the giant industrial polluters of old, but from chemicals in consumers' face creams, deodorants, prescription medicines and household cleaners that find their way into sewers, storm drains, and eventually into America's waterways and drinking-water. Watch "Poisoned Waters" on air and online beginning Apr 21 on PBS (check local listings).

More than three decades after the Clean Water Act, two iconic waterways—the great coastal estuaries 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 is also threatened in both estuaries. As a new president, Congress, and states set new agendas and spending priorities, FRONTLINE correspondent Hedrick Smith examines the rising hazards to human health and the ecosystem, and why it's so hard to keep our waters clean.