Swimming pool disinfectants and disinfection by-products (DBPs) have been linked to human health effects (e.g., asthma and bladder cancer), but no studies have comprehensively identified DBPs in the water and determined their mutagenicity. Richardson et al.

Given the popularity of swimming for recreation and sport, it is remarkable that we are only in the early stages of understanding swimming pool chemistry, human exposure(s), and potential health risks. This is partly due to the complexity of swimming pool water chemistry, which increases with transformations that water undergoes as it moves from its source to pools filled with swimmers.