Instalasi Pengolahan Air Limbah (IPAL) 2

The Wastewater Treatment Plant (IPAL) in the Indonesian capital (IKN) is part of the basic infrastructure built to support integrated and sustainable municipal waste management. Located in the IKN Core Government Center Area (KIPP) in Penajam Paser Utara Regency in East Kalimantan, the IPAL is designed to meet the sanitation needs of urban areas in Indonesia’s new capital city. The main purpose of the construction of the IPAL is to treat municipal wastewater to quality standards before recycling or discharging it into water bodies, in line with the smart and sustainable city concept promoted by IKN.

History and development process

Construction of three IPAL units (IPAL 1, 2 and 3) in the IKN started in December 2023. The project is scheduled for completion in December 2024. As of January 2024, construction was 14.56% complete. The construction of this IPAL is part of the government’s efforts to provide adequate sanitation in the IKN.

Contractors and financing

The IKN IPAL construction project is being implemented by PT Waskita Karya (Persero) Tbk., a state-owned company (BUMN), which won the tender with a contract value of Rs 638.8 billion. The financing for this project will come from the 2023 state budget (APBN).

Technology and capacity

IPAL IKN uses Moving Bed Biofilm Reactor (MBBR) technology, an efficient and environmentally friendly wastewater treatment system. This technology enables the purification of domestic wastewater via a pipe network and its transport to a treatment plant integrated with the Integrated Waste Treatment Plant (TPST). The total processing capacity of the three IPALs is 5,000 cubic meters per day, meeting the sanitary needs of KIPP IKN.

Integration with TPST and waste management

IPAL IKN is integrated with TPST to streamline sanitary management at one location. 15 tons of sedimentation sludge produced by IPAL 1, 2 and 3 are treated at TPST 1. The residue or residual treatment is filled at the Residue Filling Unit (UPR), which is located 14 kilometers away from TPST 1. The leachate from TPST 1 is treated at IPAL 1 after pre-treatment at TPST 1.

Current status

As of May 2025, the construction of the three IPALs in the IKN has reached the final stage of construction, with a target of full operation in August 2025. This project is expected to support efficient and sustainable domestic waste management in the IKN, in accordance with the principles of a smart and environmentally friendly city promoted by the government.