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Researchers confirm: Yes, there is pee in your public swimming pool

<p>Ever wanted to know how much people pee in the pool? If so, you're about to find out.</p><p>"The way I see it, the pool is the biggest, most expensive toilet — and it's all mine," Olympic swimmer Ryan Lochte told <a href="https://www.youtube.com/watch?v=PcyLs_few0E&t=27s" target="_blank">Funny or Die</a>.</p><p>A team of researchers spent three weeks testing how much urine was in over <a href="http://pubs.acs.org/doi/abs/10.1021/acs.estlett.7b00043" target="_blank">two dozen pools and hot tubs</a> in Canada.</p><p>They looked at the concentration of a certain artificial sweetener found in a lot of processed foods and passes through the body unaltered. And their findings are pretty gross.</p><p>In one public pool, it was estimated swimmers had left <a href="https://www.theguardian.com/science/2017/mar/01/how-much-pee-is-in-our-swimming-pools-new-urine-test-reveals-the-truth" target="_blank">almost 20 gallons</a> of pee. Another pool, about half the size of the first, was calculated to have about 8 gallons.</p><p><b>SEE MORE: <a href="http://www.newsy.com/stories/dirty-money-the-cash-in-your-pocket-probably-has-poop-on-it/">Dirty Money: The Cash In Your Pocket Probably Has Poop On It</a></b></p><p>If you're shocked by that, we've got some more news for you. The team also tested a handful of hot tubs and found concentrations of the sweetener even higher in those.</p><p>One hotel Jacuzzi had a concentration three times higher than the worst swimming pool.</p><p>You might be wondering why a team of scientists spent weeks studying what most people already suspected. It was all in the name of hygiene.</p><p>The researchers want to raise awareness about the risks of peeing in the pool. Although urine is sterile, it can cause eye, skin and respiratory problems when <a href="https://www.cdc.gov/healthywater/swimming/aquatics-professionals/chloramines.html" target="_blank">mixed with pool chemicals</a>.</p><p>A researcher said, "We should all be considerate of others and make sure to exit the pool to use the restroom when nature calls."</p><hr><b>Trending stories at <a href="http://www.newsy.com">Newsy.com</a></b><ul class="inline-related-links"><li><a href="http://www.newsy.com/stories/fruits-and-vegetables-could-lower-smokers-risk-of-copd/">Why Former And Current Smokers Should Eat More Fruits And Vegetables</a></li><li><a href="http://www.newsy.com/stories/trump-directs-epa-to-replace-obama-s-water-rules/">Trump Takes Aim At EPA Water Regulations With New Executive Order</a></li><li><a href="http://www.newsy.com/stories/bpa-replacement-causes-health-problems-in-animal-testing/">BPA Isn't Totally Healthy But Neither Are The Alternatives</a></li></ul>
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Researchers in Canada may have finally solved a question that pool-goers have been asking for years: How much pee is really in the pool?

The answer? More than one would think.

Graduate students at the University of Alberta have developed a new test to detect the levels of urine in swimming pools. The test measures levels of acesulfame potassium (ACE), an artificial sweetener that is commonly found in processed food. The chemical passes through the body unaltered, and be measured even after leaving the body.

When researchers measured the levels ACE in two public swimming pools in Canada over a three-week period, they found that swimmers had deposited an estimated 75 liters into the water.

Seventy-five liters of urine may seem like a lot, but it was barely noticeable in a pool with more than 800,000 liters of water.

Researchers also reported that ACE was present in 100 percent of samples taken from 31 pools split between two cities in Canada.

But while the scientists could confirm there was urine present in the water, they could not confirm how many swimmers were guilty of “going.”

While it may seem like common sense, researchers have warned against peeing in the pool in the past. The chemicals in urine can react with chemicals in pool water to create harmful reactions that cause stinging eyes and respiratory problems.

Alex Hider is a writer for the E.W. Scripps National Desk. Follow him on Twitter @alexhider.