Survey: 17 Percent Have Piddled Pool
A survey from the chemical industry-sponsored Water Quality and Health Council finds one in six people admit to having peed in the pool. And the CDC supplies hygiene tips for swimmers. Steve Mirsky reports

SUBSCRIBE TO Science Quickly
On supporting science journalism
If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.
[The following is an exact transcript of this podcast.]
Friends who had a swimming pool also had a little sign posted that said, “We don’t swim in your toilet. Please don’t pee in our pool.” Despite such widespread admonitions, four fifths of those questioned believe that their fellow swimmers are guilty of relieving themselves without bothering to get out and find a bathroom. And one in six people polled admitted that they have indeed peed in the pool.
That’s the result of a survey conducted by the Water Quality and Health Council, which is sponsored by the chemical industry, which wants to sell pool chlorine, and which partners with the Centers for Disease Control and Prevention to get the word out on healthy swimming habits.
Here are some tips from the CDC:
Don’t swallow pool water. Don’t worry, I won’t.
Shower with soap before swimming.
Wash your hands after using the bathroom or changing diapers before getting in the pool.
The CDC also feels compelled to remind people that if they have diarrhea they shouldn’t go in the pool. Talk about a few bad apples spoiling it for everyone.
—Steve Mirsky
It’s Time to Stand Up for Science
If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.
I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.
If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.
In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.
There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.