The bacteriology of the water supplies of Rangoon.1.Monsoon and post-monsoon seasons

ABSTRACT

38 water samples taken from piped and natural sources in Rangoon during the monsoon and post-monsoon seasons of 1966 were examined bacteriologically using Mac Conkey broth as a primary culture medium. 31 of the 38 samples were found unsatisfactory for drinking purposes. The species isolated included Escherichia coli, Klebsiella aerogenes, an Entero-bacter sp., Alcaligenes faecalis, Chromobacterium janthinum, Proteur, Pseudomonas aeruginosa, P. fluorescens and Serratia marcescens. Viabilities at 4C of E. coli, the Enterobacter strain, A. faecalis and P.fluorescens varied from 7-56 days, that of C. janthinum and s. marcescens was a minimum of 7 days. At room temperature (22.8C to 31.1C) E. coli and P. fluorescens were viable for 28, and K. aerogenes for less than 7 days.