Universitas Pertamina has an operational wastewater treatment process to manage domestic wastewater generated by campus activities before it is discharged into the environment. Wastewater, primarily from campus toilets, is treated through two systems: a centralised Wastewater Treatment Plant (WWTP) with a capacity of approximately 67 m³ per day and a Johkasou system with a capacity of 2 m³ per day. These facilities support campus sanitation and reduce pollutant loads entering receiving water bodies.

The centralised WWTP forms part of the existing campus infrastructure and was installed before Universitas Pertamina was established in 2016. It treats domestic wastewater through physical, biological, and chemical processes. Screening and grease separation remove coarse materials and fats, while collection, equalisation, and sedimentation stages prepare the wastewater for biological treatment. The wastewater then passes through anaerobic treatment and bio-contact aeration, followed by final sedimentation and chlorination for disinfection before discharge.

Following treatment, the effluent is discharged into the Grogol River. Universitas Pertamina uses the Minister of Environment/Environmental Control Agency Regulation No. 11 of 2025 on Domestic Wastewater Quality Standards and Treatment Technology Standards as a reference for assessing effluent quality. Effluent samples are regularly tested by an environmental laboratory to evaluate treatment performance against the applicable wastewater discharge standards. This monitoring provides a basis for reviewing the quality of wastewater released from campus and identifying operational improvements.
To complement the centralised facility, Universitas Pertamina installed an additional Johkasou wastewater treatment system, operational since July 2025, to treat domestic wastewater from toilets in the Science and Technology Laboratory building. With a capacity of 2 m³ per day, this compact facility provides decentralised treatment close to the wastewater source.
The Johkasou process comprises initial separation and sedimentation, anaerobic treatment, biological treatment in a moving-bed chamber, final sedimentation, and disinfection. An internal recirculation system returns water from the aerobic treatment stage to the initial treatment zone, supporting further biological treatment before the effluent leaves the system.

In addition to treating campus wastewater, the Johkasou system serves as an educational and research facility for students and lecturers, particularly in Environmental Engineering. It provides opportunities to observe treatment processes directly and study wastewater characteristics, biological treatment, operational performance, and water quality monitoring. Through these two operational systems, Universitas Pertamina integrates wastewater collection, treatment, and effluent monitoring into campus management while supporting practical learning in wastewater treatment technology.