Providing Sewage Treatment Plants(STPs) at Developed Affordable Housing Projects in ULBs of Peddapuram, Mandapeta, Pithapuram, Ramachandrapuram, Amalapuram, Rajamahendravaram and Samalkota of East Godavari District, of Rajamahendravaram Circle, APTIDCO in Andhra Pradesh on Design, Engineering, Construction, Supply, Installation, Testing, Erection and Commissioning and thereafter Operate and Maintain the STPs for 5 Years basis.