operation & maintenance ( 1 ) main water works tehsil road, ( 2 ) gurugram road water works ( 3 ) chhara road water works ( 4 ) rising main, complete distribution system of jhajjar town, ( 5 ) water works gurugram roadand ( 6 ) delhi gate boosting station all pumping machinery. ( except operation of pumping machinery at water works gurugram road ) , electric installations, streets lights etc., existing wtp scada system, rectification and detection of insanitary connections, chlorination system for water supply scheme jhajjar town and all other works contingent thereto for period of 1 month from the date of commencement