The impact of four swimming pool water treatment processes on concentrations of disinfection byproducts : Chemical and biological hazard prevention

In fact, the members of a follow-up committee expressed strong interest in a more in-depth diagnosis of the impacts of the water treatment processes in use and in conducting a study “[…] to appraise various solutions in order to better control exposure (in that the choice of the swimming pools studied would enable the impacts of various systems to be compared, i.e., before and after, at the same s [...] Considering the diversity of the swimming pools highlighted by the committee and confirmed by the exploration of the environmental factors in the initial project, 1 Excerpt from the minutes of the first meeting of the follow-up committee. [...] During each campaign, the environmental concentrations of DBP in the swimming pool water and in the air around it were measured in order to successively and systematically address the impact of the following four treatment processes with respect to the baseline: T1: activation of ultraviolet rays (UV); T2: halt of air stripping with continuation of air extraction from the buffer tank; T3: halt of [...] The procedures to analyze levels of THM in the ambient air were set up in the laboratory at the Unité d’inhalation expérimentale of the Department of Environmental and Occupational Health of the Université de Montréal. [...] The analyses of the CAM air samples were subcontracted to the laboratory of the environmental service of the City of Montréal.