design, construction, supply, testing, commissioning of water supply schemes with electric driven pumps and iron removal treatment plant having logy adsorption nano logy of csir or certified by csir or any other logy endorsed approved by goi in the iron affected habitations wards of districts of bihar on turn-key basis with 3 months trial run after commissioning and comprehensive operation and maintenance of 60 months after successful completion of trial run period under mukhya mantri nishchay yojna quality affected on turn key basis under p.h.division, araria, ward no.9,10,11 gr-i-23mni 7 of panchayat mujlispur, under block palasi .