Annual Maintenance Contract of Disinfection of clear water with chlorine gas and supply of liquid chlorine and bleaching powder for the cleaning and maintenance of the filter beds at KPM filtration plant on Thatipudi Reservoir scheme, Supply and delivery of Poly Aluminium Chloride (PAC) to 10.00 MGD Filtration plant at Krishnapuram under AE(WS&S)-Pendurthi section in GVMC, Visakhapatnam for the Year 2026-27.