BIOFILIVE FORMING BACTERIA IN DRINKING WATER DISTRIBUTION SYSTEM OF BANGALORE NORTH TALUK, INDIAN. NANDINIAbstract Biofilms are an important survival mechanism for many extra cellular parasites. The development of bacterial population as biofilms within the water distribution system in the northern part of Bangalore city has led to experience long-term bacteriological problems. The present work examines the presence of biofilm bacteria by using Scanning Electron Microscopy(SEM) to investigate the nature and extent of association of microorganisms with these surfaces. The water samples with more than 102 CFU/100m1 burdened with Pseudomonas aeruginosa,. Salmonella typhii., E.coli. and Enterococcus faecalis. Observed during pre and post monsoon were considered for the study of biofilm formation. These strains were resistant to antimicrobial agents and their MAR index exceeded 0.2 and addition were more typically tolerant to metal salts. The complex nature of MAR phenotypes which are able to survive higher concentration of metals, form biofilm coating on pipelines, aspects of which are presented in this paper.
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