Looking for a "clean water" beach?

In a July 29, 2009 online article CNN.com/Travel, "Looking for a Clean Beach?" Ocean City, Maryland gets "five stars". According to the article, the NRDC (National Resource Defense Council) just released its report on water quality of 200 beaches in the US. It states, "Ocean City, Maryland consistently ranks as one of the best for water quality." It also says that "Hands down, one of the best beaches is Ocean City, Maryland which does well year after year because of its clean water and strict water quality monitoring, two factors that earned the popular East Coast beach five stars..."