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Pollution Prompts Record Beach Closings

Beaches With Cleanest and Dirtiest Water Cited in Report

Storm Water Biggest Culprit

By far the biggest source of beach water contamination is runoff from storms, which was responsible for 40% of beach closings and swimming advisories in 2006. That's more than double the number just one year earlier, Stoner says. Sewage spills led to another 5% of closings.

Stoner says the most dangerous time to swim at the beach in terms of water quality is after a heavy rainfall because storm water runoff flows directly into waterways, taking ground contaminants like pet wastes, pesticides, and fertilizers with it.

"Basically anything that's on the streets washes into the waterways untreated when it rains," she says. "That's why this is such a huge problem."

Record rain levels in 2006 added to the strain on an already overloaded storm system infrastructure. And unchecked development in and around coastal areas has led to big declines in wetlands and dunes that could filter dangerous pollution, she adds.

EPA Cites Progress

The NRDC report contrasts a more optimistic assessment of the country's beach water quality issued by federal officials in May.

The Environmental Protection Agency's "2006 Swimming Season Update" noted that more of the nation's beaches than ever are being monitored for water quality and that beach closings in 2006 tended to be shorter than in 2005.

Benjamin Grumbles, who is the EPA's assistant administrator for water, tells WebMD that better monitoring is largely responsible for the increase in beach closings and advisories.

The passage of a coastal water's monitoring law by Congress in 2000 led to a tripling of monitored beaches with public advisory programs, he says.

"We are seeing progress in keeping America's beaches clean, but significant challenges remain," he says. "We don't believe [the 2006 figures] represent an actual increase in risk. What we are seeing is an increase in monitoring and public awareness."

Grumbles says reports like those from NRDC and the EPA have increased public awareness about beach water quality and have led to increased action at the federal, state, and local level.

The EPA recently reached an agreement with the city of San Diego, which will lead to a billion dollar sewer system upgrade designed to reduce sewage spills and overflows, and the agency is currently studying new technology that could reduce water contamination assessment times from several days to several hours.

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