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Don't pee in the pool! / Carrie Arnold

One in five of us did something this summer that would not be done in a swimming pool. it's dangerous! really!

"The Pissing Boy" statue in Brussels. Photo: skyfish / Shutterstock.com
The "peeing boy" statue in Brussels. Photo: skyfish / Shutterstock.com

But this act, which stems from laziness, is more than just a disgusting act. It produces toxic substances, even if in tiny amounts. "People think it's okay to pee in a pool because it has chlorine in it, and that's really not true," says Purdue University chemical engineer Ernest Bletchley. The chlorine in the pool is designed to destroy bacteria. It is not responsible for taking care of the actions of the human body. In fact, chlorine easily reacts with uric acid, one of the nitrogen-containing components found in urine. In this chemical reaction, among other things, the substances cyanogen chloride (CNCl) and nitrogen trichloride (NCl3) are formed. Bletchley has found these apparently dangerous substances in every swimming pool he has sampled in the last 10 years. In the latest study he conducted, the results of which were published in the journal Environmental Science & Technology, Bletchley found that 93% of the uric acid that created these compounds in the ponds came from human urine (sweat also contains uric acid).

It doesn't take a lot of urine to pass the allowable levels of these substances, as set by the US Environmental Protection Agency. Another study found that trichlorinated nitrogen levels in pools quadrupled after a swim workout. Other scientists have found that frequent exposure to these substances, as swimmers and lifeguards are exposed to, may increase the risk of developing asthma and other respiratory diseases, although this link needs to be explored in further studies.

Therefore, even if it doesn't disgust you, please, don't pee in the pool.

The news was published with the approval of Scientific American Israel

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