design, construction, supply, testing and commissioning of piped water supply schemes under har ghar nal ka jal nischay in areas having ground water quality issues; with electric driven pumps and iron removal treatment plant having technology (adsorption/ nano technology) of csir or certified by csir or any other technology endorsed/ approved by goi in belsara panchayat ward-1,3,4,5,10 & 12 (total-6 nos. schemes),block :raniganj in the district of araria , bihar on turn-key basis with 1 months trial run after commissioning and comprehensive operation and maintenance of 9 months after successful completion of trial run period under mukhyamantri gramin peyjal nishchay yojna (quality affected) under p.h.division, araria.