Comprehensive Maintenance And Repair Of Existing Pipelines Of All Types (di/ci/ac/pvc) And Sizes At Various Depths, Including Sluice Valves, Non-return Valves, Leakages And Repair Of Illegal/not Functional Water Supply Connections Work Etc. For The Period Of 12 Months W.e.f. Date Of Commencement And All Other Works Contingent Thereto.