Annual Maintenance (i) 150 MLD WTP of Ph-II Kalabgoor filter beds section for the period of (2) years under Kalabgoor WTP Section, SD-I (ii) 75 MLD WTP of Ph.I, Rajampet Filter beds Section for the period of (2) years under Rajampet WTP Section, SD-I (iii) Air Valves, Sluice Valves, 3.00 MG reservoirs, Chlorine Plant, electrical installations and other works at Singapur Campus of Phase-III and IV MWSS under Singapur Section, SD-III, O and M Division No.VIII, Patancheru