Quickly, the pool was drained in addition to refilled, the clear blue restored.
Water quality will be a health concern in all public pools, in addition to although of which won’t turn the water green, urine can pose hazards to swimmers’ health. Unfortunately, of which’s difficult to detect inside chlorinated water of a huge pool.
Using an artificial sweetener as a proxy, they discovered of which all of the 31 public pools in addition to hot tubs they tested contained urine.
Though sterile, urine reacts with pool disinfectants, mostly chlorine, to form dangerous byproducts including trichloramine, which can irritate eyes, the researchers say.
Byproducts of swimmers’ urine, feces in addition to sweat mixing with chlorine can even build up inside air of indoor pools, triggering asthma attacks. The chemical reactions of which create these byproducts also mean there’s less chlorine left inside water to kill bacteria, such as E. coli.
Chemical reactions in pool water make of which difficult to test for urine, so a proxy — a stand-in substance — will be needed. Enter acesulfame potassium or Ace K, an artificial sweetener of which will be often used in processed foods in addition to therefore widely consumed. After passing through the digestive tract, This kind of sweetener will be excreted in urine.
Xing-Fang Li, a professor inside University of Alberta’s Division of Analytical in addition to Environmental Toxicology, in addition to her colleagues tested more than 250 samples through 31 pools in addition to hot tubs in two (courteously unnamed) Canadian cities in addition to compared them with samples of local tap water.
The concentration of sweetener inside pools in addition to hot tubs ranged as high as 7,110 nanograms per liter, up to 570 times more than the levels found in tap water.
All the tested pools in addition to hot tubs contained urine, Li in addition to her team said. One 220,000-gallon pool contained 20 gallons of urine, while another pool half the size of the first contained 7 gallons.
Lindsay Blackstock, co-author of the study in addition to a doctoral student of analytical in addition to environmental toxicology at University of Alberta, said these results cannot be applied to all community pools. “The amount of urine deposited into each pool would certainly be specific to numerous factors,” said Blackstock. Factors include how many swimmers use the pool, the swimming hygiene practices of a community in addition to how often the pool will be refilled.
Blackstock recommends all swimmers rinse off in addition to use the washroom before entering the swimming pool.
Sachleben, who also will be a fellow in chemical development for Momenta Pharmaceuticals, said he does not frequent swimming pools, nevertheless of which’s not because of the pee.
“I just don’t find hanging out at the pool something I enjoy. Much prefer a nice beach,” Sachleben said.
“Let’s face of which,” he added. “Ponds in addition to the ocean are full of fish in addition to different animal excrement, along with the decomposing bodies of the dead ones.”