Widianto, T., Arifin, Z. and Yulianto, E. 2026. Performance of Removal Efficiency in the Main Wastewater Treatment Plant for Physical, Chemical (Fe, Zn, Bod), and Biological Parameters at the Steam Power Plant (Pltu) Paiton Units 3, 7 & 8. Journal La Multiapp. 7, 2 (Feb. 2026), 329-340. DOI:https://doi.org/10.37899/journallamultiapp.v7i2.2761.