A classy apartment located in Bogor area with a capacity of more than 7000 units, a considerable amount of domestic wastewater/sewage is generated, which is around 937 m3 per day.

To treat the sewage, Parimalt uses the Sewage Treatment Plant, STP with activated sludge system which consists of ; Screening, Grease trap, Equalization, Aeration, Settling, and Chlorine contact basin, so that the resulting effluent can meet the quality standards of waste that may be discharged into the nearest water body.