What's really in your swimming pool?

(American Chemical Society) Whether you're just cooling down or swimming competitively, the pool is a summer staple. But before you dip in, you might want to jump in the shower. Scientists warn that bad hygiene among swimmers allows harmful disinfection by-products (DBP) to form in pools. An article in Chemical & Engineering News (C&EN), the weekly newsmagazine of the American Chemical Society, dives into the issue to see how swimmers can tame potentially troubled waters.