The Effect of Quarantine Time on the Quality of Bottled Drinking Water (AMDK) that Use Ozonation Process

Abstract

Bottled drinking water (AMDK) requires disinfection such as ozonation to ensure safe consumption. Ozonation disinfection is carried out to eliminate pathogenic microorganisms. The ozonation process can produce residual ozone which is a strong oxidizer and therefore harmful to health. To eliminate microorganisms and residual ozone, quarantine time is required. The purpose of this study was to determine the optimal quarantine time for the elimination of pathogenic microorganisms and remaining ozone in bottled drinking water. Bottled drinking water brand X samples were tested with a Completely Randomized Design (CRD) at 5 levels of quarantine time (0, 2, 4, 6, 8 hours) and 3 replications with parameters of pH, TDS, DO, Turbidity, and TPC analyzed using a WA2017SD digital tool and the standard TPC method. The results showed the best water quality with a pH value of 6.89; TDS 120 mg/L; DO 7.5 mg/L; Turbidity of 0.29 mg/L and TPC of 0.33 colonies/mL at a quarantine time of 6 hours effectively reduces microorganisms and ozone residues so that all water quality parameters meet the SNI 3553:2015 standard, therefore the quarantine time for AMDK using ozone is very important.