author(s)
Muhammad Tayyab, Abdul Haseeb, Hameed ur Rehman, Kausar Saeed, Sajid Ali, Muhammad Naveed, Ikram Ullah, Asad Javed, Inayatullah and Saifullah Khan

abstract
A total of 200 water samples were collected from different areas of District Dera Ismail Khan for the detection of Giardia lamblia including pond water, tap water and drain water each having 40 samples. In the present study a total of 200 water samples were examined by means of giemsa, which showed 21% (42/200) was of Giardia lamblia, of these samples the prevalence of Giardia lamblia was determined 15% in tap water, 24% pond water, and 30 % in drain water.