Water samples were pre-filtered using 5 m cartridge filter to remove particulate matterand then subjected to MF using TFF system (QuixstandTMBenchtopsystem, GE Health Care Bio Sciences Corp., USA) fitted with 0.2 mpore size TFF cartridge (CFP-2-E-4MA with a surface area of 420 cm2or CFP-2-E-9A with a surface area of 8400 cm2) to remove bacteriaand particulate matter