A little known fact: 19% of American adults have admitted to peeing at least once in a swimming pool. The share of children doing so is undoubtedly much higher than that.
If you’re wondering, ‘and this is important to know for what reason?’ the reason is simple: Though urine is sterile, it contains various chemicals – urea, ammonia, amino acids and creatinine among them – that can react with such pool sterilizers as chlorine to form volatile disinfectant byproducts (DBPs) that can lead to eye and respiratory irritation and even a form of asthma.
How much pee might there be in a pool? A team of scientists at Canada’s University of Alberta (the Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry) found some in 100% of the sizab le sampling of pools and hot tubs they studied last year, with a 110,000 gallon (416, 395 l) pool containing 7.9 gallons (26.5 l) of urine and a 220.000 gallon pool (832,790 l) included close to 20 gallons (75 l) of liquid human waste.
It’s hard to avoid ‘absorbing’ some pool water when you find it streaming down your face when you emerge from beneath it. Even if you don’t swallow, but blow it out, you could be taking in some urine, albeit diluted. But that’s what the pool water samples were in the tests done by the Canadian researchers.
That tinkle of pee you may have absorbed on a single pool visit is hardly like to hurt you. But if you are a regular pool user, this is a fact to keep in mind: That person next to you – yes, that one – just did a bladder dump, and the splasher on the far side of that person is pushing “it”| toward you.