detailed design , construction, commissioning of a) one (01) nos. of under ground reservoir (cwr) of capacity 0.50 mg including pump house and sub-station building with all related civil work all complete with design , engg , supply,storage , installation , commissioning, trial run and three (03) year o&m of electro-mechanical equipment and power distribution system of clear water bps at nababgunge with all related civil & electromechanical work all complete & b) 450 cum capacity rcc over head reservoir (ohrs) with all related civil work all complete including three years o&m within north barrackpore municipality on turn key basis.