Lubis, A., Tri Retnaningsih Soeprobowati and Budi Warsito 2025. Study of Amoxicillin Residues in an Seketak River, Semarang, Indonesia: Eco toxicological Risk Assessment and Recommendations for Pharmaceutical Wastewater Quality Standards. International Journal of Advances in Scientific Research and Engineering (IJASRE), ISSN:2454-8006, DOI: 10.31695/IJASRE. 11, 12 (Dec. 2025), 8–11. DOI:https://doi.org/10.31695/IJASRE.2025.12.2.