Providing Sewage Treatment Plants at the locations of 1) Vellatru road II 2) Chakirala-III 3) Modempalli - III 4) Singarakonda-III of Deputy Chief Technical Officer, Guntur Circle, APTIDCO, Developed Affordable Housing projects in Andhra Pradesh on Design, Engineering, construction, supply, Installation, Testing, Erection and Commissioning and thereafter operate and maintain the STPs for 5 years basis. (Including Defect Liability period of two years.