Estimate For Water Supply Distribution Network With D.I. Hdpe Pipes, H.Y Tube Well , Motor, House Connection Under Multi Villages Surface Water Supply Scheme Bidupur For Area Situated In The Catchment Of Esr Desari Bazar 8-19 Block Desari Panchyat Bhikhanpura 01, 02, 05 And Panchyat Jafarabad Ward No. 06 Of Vaishali District Under P.H.Division, Hajipur .