Bacteriological analysis of drinking water from services hospital Lahore and services institute of medical sciences Lahore

Objective: to evaluate fifty-six water samples for bacteriological contamination in services hospital and services institute of medical sciences (sims),lahore from 15 december 2011 to march 2012. materials and method: a total of 56 water samples were collected from water tanks,taps of toilets,kitchens and water coolers of different wards and laboratory of services hospital,lahore. samples were also collected from taps of all the laboratories,kitchen and toilets of sims pathology department and student hostels. samples were collected in 100ml sterile bottles and brought to the laboratory within two hours of collection. all the samples were tested for bacterial contamination by the multiple tube method to determine the most probable number of 'total coliforms' and faecal coliforms using the standard procedure. results: coliforms were grown from 16 (28.6%) water samples both for total and faecal coliforms.