construction of all civil and electrical & mechanical works under bhida hanyudig.o.v. pumping water supply scheme consisting of intake arrangement on the bank of eastern nayar river, rapid gravity filter type water treatment plant, supplying, laying & jointing of api / mserw / gi heavy / medium pipes in rising main, gravity main and distribution system, pump house and staff quarter, clear water sumps / reservoirs with complete installation, testing, commissioning of pumping plants, along with all other appurtenant works, including survey, design / checking of design of different structures / pipe line etc. complete, 12 months maintenance & handing over all executed works to competent maintenance authority.