CALGARY: Canadian researchers studying urine levels in swimming pools have discovered just how high the levels are, and the results are not pretty, according to an article published on Wednesday. The results showed one 830,000-litre (220,000-gallon) pool, which is about one-third of an Olympic-sized pool, had 75 litres of urine while another smaller pool had 30 litres. Although urine itself is sterile, its presence in swimming pools is a public health concern because urine can mix with pool chemicals to harm swimmers' health, according to the study. It found concentrations of ACE in the pools and tubs, which were not named, that were up to 570-fold greater than in normal tap water. Researchers then used the ACE concentration of the two pools over three weeks to estimate their levels of urine, according to the study.

Source: The Star March 02, 2017 04:06 UTC