Pathogens involved include:
(1) Pseudomonas aeruginosa
(2) Escherichia coli O157:H7 (and related types)
(3) Shigella sonnei
General recommendations:
(1) The operator should adhere to all recommendations and regulatory requirements for pH and disinfectant levels.
(2) The operator should have a thorough knowledge of basic aquatic facility operation.
(3) The staff should be trained in (a) proper pool maintenance, (b) the system used to monitor disinfectant level and pH, and (c) the risks of disease transmission.
Special recommendations:
(1) During periods of heavy bather loading, closely monitor free chlorine measurements.
(2) If the water is heated to near body temperature (as in a hot tub) then monitor disinfectant levels closely since the higher temperature may dissipate the chlorine rapidly.
(3) Cyanurates may be added as a chlorine stabilizer to outdoor pools but not indoor pools.
If a remote monitoring system is used:
(1) The staff should be trained in system capabilities, maintenance requirements, and alert procedures for the remote monitoring system.
(2) The remote monitoring company should give timely notification if the disinfectant level becomes low.
