It's lists like this one from Green Daily that make me want to opt for a properly chlorinated swimming pool. On the bright side, two, count 'em TWO, of the cleanest beaches in the U.S. are in my backyard, right here in Minnesota. First the cleanest: Lafayette Community Club Beach, Minnesota Franklin Park at 13th Street on Park Point, Minnesota Hampton Beach State Park, New Hampshire Wallis Sands Beach at Wallis Road, New Hampshire Bolsa Chica State Beach, California Huntington...