[Hygienic standards of chemicals for water sterilization in the swimming pools].

The authors proposed a concept of making the hygienic standards for water disinfectants in the swimming pools, by substantiating their allowable residual concentrations (ARC), as well as criteria for evaluating the effectiveness and safety of swimming pool water disinfectants: a ratio of ARC to the optimum bactericidal concentration (if the ratio is less than 1; the agent is not recommended for use); a ratio of the maximum noneffective concentration of a local irritant action to the optimal bactericidal concentration of a disinfectant (if the ratio is < or =5; the agent is not permitted for use); a specific activity (agents that can cause allergenic and carcinogenic effects, as well as a mutagenic effect revealed on mammals or man are not permitted for use); the content of impurities in the disinfectant (when the agent is used in the dose equivalent to 3-5 optimal bactericidal concentrations; the water levels of impurities should be not more than 0.5 of the maximum permissible concentration. In accordance with the proposed procedure, ARC of BioPAH (polyhexamethyleneguanidine hydrochloride) has been estimated to be 5 mg/l. However, the agent may not be permitted for use in the swimming pools as it contains hazardous impurities.