Detection and enumeration of coliform bacteria in drinking water at hospital of benghazi/libya

The aim of present study was to detect the presence or absence of coliform and faecal coliform bacteria from tap water of Benghazi Hospital, Libya at three different seasons. Samples were collected every month from two points viz surgery department (tapwater) and kidneys department (dialysis water) and examined by MPN and plate count methods. Presence of faecal coliform bacteria was not reported from both sources. However, the presence of coliform bacteria was reported from both source and it was slightly higher than the recommended one from both sources. Chemical analysis of water indicates the presence of organic matter like NO3 but the level was lower than the recommended by both world health organization (WHO) and environmental protection agency (EPA).