The incidence of Urinary Tract Infection (UTI) was analysed among the patients of Kanyakumari Government Medical College and Hospital, Asaripallam, Kanyakumari district to identify the common bacteria causing UTI and to check antibacterial potential of selected plant extracts against the pathogens. The results showed that 28% of samples yielded significant bacteriuria. Among the infected persons, females were more and percentage of infection was higher in the age group above 55 followed by 35-55 in both sexes. E.coli has been found to be the most common UTI bacteria followed by Klebsiella. Four bacterial strains i.e. E.coli, Klebsiella, Pseudomonas and Proteus were isolated from UTI samples and antibacterial activity of aqueous and methanol extracts of Aerva lanata and Scoparia dulcis were carried out by disc diffusion method. The highest zone of inhibition was observed in the extracts of Aerva root for E.coli and Klebsiella where as in Pseudomonas it was in the fruit extracts of Scoparia. Proteus was resistant against all extracts with no or little zone of inhibition.

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