BMR Microbiology-Effect of water purification methods on waterborne pathogen Aeromonas spp. from Surat water distribution system.

The occurrence of Aeromonas spp. in water supply of Surat city was monitored from several samples like four main water works, nine different pumping station and different customer usage water samples for a period of 1 year. The selective isolation was carried out by using membrane filter technique using M-Aeromonas selective media and selective isolation was done on Rippey Cabelli agar plate. Total 199 isolates were obtained. There are 22 different species of Aeromonas known till date, out of which 11 species are commonly found in aquatic environment. According to the research work, 9 different isolates of Aeromonas spp. were isolated from the water samples under study they are Aeromonas hydrophila, Aeromonas sobria, Aeromonas caviae Aeromonas Salmonicida subsp. salmonicida, Aeromonas schubertii, Aeromonas veronii, Aeromonas euccrenophila, Aeromonas trota and Aeromonas popoffii. The growth range of Aeromonas shows seasonal variation more often during the warmer months.