I used to be a life guard at a private pool in a ritzy community in the hamptons for a summer job. I won't tell you what I found in the pool. (Or the weird looks people comming early game me when I was fishing out a pair of panties. The response "I wish I were responsible" would have been better without the kids around.)
At any rate, do not drink pool water. In fact, shower afterwards. Not a joke.
Some media claimed last summer Vienna officials considered banning guests at public swimming pools from wearing baggy Bermudas as they take around 2.5 litres of water with them every time they get out of the pool after a swim.
Huh? 2.5 liters is roughly 85 ounces or 5 pounds 5 ounces.