Diarrhoeal incidents pose a particularly high risk to the health of bathers. Immediately closing the affected pool and undertaking appropriate remediation is the only way to prevent the spread of disease.
Comparison of CT values and contact time for 3-log10 reduction of Cryptosporidium using hypochlorite to form free chlorine and ClO2, independently and in combination1
ClO2 concentration (mg/L)
1 Adapted from Murphy et al. 2014.