Hutagalung, J.M., Marwahati, K., Muliati, L., Alfian, U.R. and Prasongko, R. 2026. Comparative Effectiveness Of Organic Waste–Based Eco-Enzyme And Commercial Bio-Bacterial Agents In Railway Toilet Wastewater Treatment. SAINTEKS : Jurnal Sain dan Teknik. 8, 01 (Mar. 2026), 51–60. DOI:https://doi.org/10.37577/sainteks.v8i01.1035.