laying of distribution system including specials, valves all complete, proposed rising main system, providing fhtc including supplying, laying, fitting, fixing of 15mm nb pvc ( schedule 80 ) / 20mm od hdpe ( pe100, pn16 ) pipe with all necessary specials, 10 mm gun metal ferrule, saddle piece etc. all complete, repair and renovation works of r.c.c. elevated reservoir1250 cum, construction of pump house ( 4.88m x 3.66m ) including sanitary arrangement, special repair and renovation of chlorine room and guard room, repair & renovation of boundary wall for 170 m length in headwork site, construction of service road ( 60 mtr. length x 3 mtr. width ) at pump house site, for augmentation of surface water based piped water supply scheme of arsenic affected areas of zone -xiv keadanga in deganga block of north 24 pargana ( s ) district under n 24 pgs w / s div-i, phe dte.