Tenders for Maintenance And Operation Of Valves For Water Supply And Maintenance Of Electro Chlorinators At Sse/W/I/Apdj Under The Jurisdiction Of Ssewi Apdj, Apdj Station And Colony Under The Jurisdiction Of Ssewii Apdj, Cob, Dhh And Bxt Station And Colony Under The Jurisdiction Of Sse/W/Cob For A Period Of 24 Months.