Annual Maintenance Work Of Water Supply Network 100/150/200/250/300mm Dia Pipes Duly Arresting Water Leakages, Rectification Of Pollution In Water Supply Lines, Clearing Chowkages/Blockages, Replacement Of Damaged Pipes And Repair And Replacement Of Sluice Valves And Addressing Various Water Supply Grievance For Smooth Functioning Of System For The Period Of (1) Year Under Red Hills Low Level Section, Sub Division Iii Of O And M Division Iv. (2nd Call)