Occurrence of hemolytic coliform bacteria in drinking water samples of Lahore
2006
Qazi, J.I. (Punjab Univ., Lahore (Pakistan). Dept. of Zoology) | Shahid, S. (Punjab Univ., Lahore (Pakistan). Dept. of Zoology) | Chaudhary, N. (Punjab Univ., Lahore (Pakistan). Dept. of Zoology)
Incidence of water borne bacterial infectious diseases is resurging recently due to scarce supplies of potable water. Inadequately chlorinated and untreated drinking waters are involved in the spread of enteric diseases. In this study, five drinking water samples collected randomly from different areas of Lahore were processed for the detection and enumeration of coliforms. All the samples were found to harbour coliform bacteria, with indication of E. coli in four of the samples. Six of the sixteen isolates were found hemolytic on blood agar. The present results indicate fecal pollution of water reservoirs as one of the spread routes of the enteric pathogens. Most of the water samples are not recommended for direct drinking and recreational purposes. They must be treated in some forms such as boiling or filtration before use.
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