The Putatan Water Treatment Plant Phase 2 is expected to provide waste water services for over 58,000 households from several barangays in Muntinlupa City. It is designed to treat up to 150 million liters of waste water per day, contributing to the clean-up of Laguna Lake. The proposed plant shall have seven main structures: Biological Aerated Filter, Ultrafiltration/Reverse Osmosis, Biological Aerated Filter, DAF, Control Building, Genset Room and Substation, and Sludge and Chemical Building.

Frey-Fil Corporation, the one responsible for the overall design and build of Putatan STP, will undertake the civil works design of the project. In this engagement, AMH Philippines, Inc. worked on the Geotechnical Engineering Assessment for the proposed water treatment plant whose results were used as input to complete the overall design of the structures.