Ah, summer. It's the time of barbecues and outdoor activities. With 309,000 public pools in the United States, chances are that you have one nearby. Before you think about packing the kids in the car and heading to the neighborhood pool, take the time to read this article. According to the Centers for Disease Control, one in eight pools was shut down in 2011 due to public health concerns; the presence of fecal matter being the most prevalent problem. Here's what you should know:
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