Annual Maintenance Contract Of Disinfection Of Clear Water At Block No. 15,18, 22, 24 And Tatichetlapalem For Raiwada 15 Mgd Water Treatment Plant, Disinfection Of 42 Mld Clear Water 1000 Kl Sump And Prechlorination Of 33 Mgd Raw Water At Narava Under Ae (Ws)-Hwws Section In Gvmc, Visakhapatnam For The Year 2025-2026.