Swimming Pools as PFAS Exposure Environments
Public and private swimming pools filled with municipal tap water may contain PFAS at concentrations present in source water. Pool water also concentrates PFAS through evaporation, and chlorination chemistry may alter some PFAS compounds.
PFAS Chlorination Interactions
While chlorination effectively disinfects pathogens, it does not destroy PFAS compounds. Some research suggests chlorine may partially oxidize certain PFAS precursors, creating different PFAS profiles in pool water versus source water.
Swimmer Dermal and Inhalation Exposure
Competitive swimmers spending 4–6 hours daily in chlorinated pools face cumulative dermal PFAS exposure enhanced by pool temperature and exercise-induced increased skin perfusion. PFAS-containing aerosols from pool splash zones add inhalation exposure pathways.
Pool Water Treatment Considerations
Pool operators in PFAS-affected regions should consider source water quality when assessing pool water safety. While PFAS-specific pool regulations do not yet exist, using PFAS-treated source water reduces swimmer exposure risk. Competitive athletic facilities may warrant source water PFAS testing.