Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham (Apr 2019)
Bacteriological Quality of Clear Plastic Bottled Drinking Water Distributed in Tourist Cities, Republic of the Union of Myanmar
Abstract
In this study, bacteriological quality of 28 samples of clear plastic bottled drinking water distributed in Hanthawady, Yangon and Kyaikto cities, Republic of the Union of Myanmar was determined. Coliform bacteria, fecal coliform bacteria and E. coli were assayed by most probable number (MPN) technique. Number of totalheterotrophic bacteria was enumerated by spread plate technique. The results showed that coliform bacteria and fecal coliform bacteria in all of tested clear plastic bottled drinking water samples were less than 2.2 MPN/100 mL. E. coli and total heterotrophic bacteria were not found in all tested samples. Therefore, this phenomenon indicated that pathogenic bacteria were not found in all bottled drinking water samples. From assessment of microbiological qualities in terms of coliform quantity and pathogenic bacteria the results indicated that all tested samples met the criteria for drinking water in sealed containers set by Ministry of Public Health Notification, Thailand, no. 61 (1981).
