CNN -- Heading to the beach for a summer vacation?
You may want to do your research first.
The Natural Resources Defense Council monitored more than 3,000 beaches across the country and according to their annual Testing The Waters report, 10 percent of U.S. beaches failed the government's swimmer safety standards.
At 4 percent, beaches in Delaware, Maryland and Virginia boast the lowest failure rate of water samples in the country.
The report says beach water pollution can cause illnesses like hepatitis, pink eye, stomach flu and more.
So what can you do to make sure you're not caught in the filth?
The NRDC says don't go to the beach after heavy rain and stay away from ones with visible discharge pipes.
To see the the full report, click here.
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