Providing Sewage Treatment Plants (STPs) at the locations of (1) Sonia nagar (0.50MLD) in VizianagaramULB, (2) Nellimarla (0.30MLD) of Nellimarla ULB (3) Bobbili (0.80MLD) of Bobbili ULB (4) Saluru(0.60MLD) Saluru (Total 2.20MLD) in Vizianagaram district of Deputy Chief Technical officer, Visakhapatnam Circle, APTIDCO, Developed Affordable Housing Projects in Andhra Pradesh on Design, Engineering, Construction, Supply, Installation, Testing, Erection & Commissioning and thereafter Operate & Maintain the STPs for 5 (Five) Years basis (including Defect Liability Period of two years from the Date of Completion of Project).