Researchers at the University of Michigan found just one-fourth of parents shower their children before allowing the kids into the pool. That means the remaining three-quarters could be, and often are, releasing germs into the water.
"One of the things that is most common at water parks today is getting an infection from contaminated water," researcher Matthew Davis said. "Well how do those germs get there? What I say to parents is, it's from poop in the pool."
Water parks routinely protect customers by using water filtration and high levels of chlorine, but the researchers say it's not always enough.