OPERATION AND MAINTENANCE OF WATER WORK COMPONENTS INCLUDING MAINTENANCE OF ALL HEAD WATER WORKS, WATER TREATMENT PLANT, PUMPING MACHINERY & WATER STORAGE COMPONENTS, REPAIRING WORKS OF ALL PIPEPINE LAYED ( INCLUDING MATERIAL COST ), WATER DISTRIBUTION IN CITY, INCLUDING ESTABLISHMENT CHARGES AND ALL MATERIALS ON REPAIRING OF PIPE LINE AS WATER WORKS DEPT. AS PER THE DETAILED SPECIFICATION AND OBLIGATORY REQUIREMENTS FOR THIRTY- SIX ( 36 ) MONTHS RECORD FOR SAME ( EXCLUDING POWER COST )