We swim in our pond a lot and haven't experienced any problems. I'm sure your health depart. could test your water for you. Our doctor recently told us about a study done by an MD named Katz that placed a test group of young girls in a tub of dye and all of them ended up with dye in their bladders. Something to do with young girls sphincter muscles not fully closing off. My daughter has been swimming in our pond since before her first bithday with no ill effects.
