Resuscitation of Bacteria after Dechlorination of Treated Drinking Water

In this study, the effects of initial bacterial load (102 , 104 and 106 cells/ml) dechlorination idiosyncrasy on efficacy varying concentrations (0.018–0.126% v/v applied for 30 minutes) a point-of-use chlorine-based proprietary disinfectant (WaterCare®) were investigated in drinking water. Results indicated that higher cell populations significantly affected disinfectant.Subsequent disinfected water resulted resuscitation bacteria. This was demonstrated after 1440 minutes post-dechlorination Salmonella typhi at least 120 Escherichia coli, Proteus vulgaris Shigella dysenteriae, particularly lower (0.018–0.054% v/v). Thus, whilst use WaterCare® recommended dosage(0.072% or 10 ml to 25 litres clean may produce microbiologically safe high microbial post-disinfection residual chlorine loss limit its efficacy.
 Keywords: Bacterial resuscitation, Dechlorination, Drinking water, typhi,