Annual Maintenance Contract of 1000mm dia PSC, 800mm dia CI (Pumping), 800mm dia PSC and 600mm dia Gravity main (Raiwada Pipe line) and replacement of damaged valves (15 MGD WTP) from Narava Filtration plant to TSR, 600mm dia CI Pumping main from Natayyapalem to Mindi and 350mm dia AC Pumping main from Narava to Sheelanagar & 350mm dia distribution line from Mindi, BHPV and Repairs, reconditioning & maintenance of damaged existing suitable CI, DI D/F gear wheel type sluice valves in 15.00 MGD WTP at Narava under AE (WS)-HWWs section in GVMC, Visakhapatnam for the Year 2025-2026.