FEBRIANTI, A. ., MUNFARIDA, I. and UTAMA, T. T. . (2025) “Application of Coconut Shell Activated Carbon Technology for Groundwater Treatment in Roudlotut Tholibin Islamic Boarding School”, International Journal of Environmental, Sustainability, and Social Science, 6(1), pp. 121–126. doi: 10.38142/ijesss.v6i1.1309.