Syifa Nadiyah Khairunnisa , Salsabila, et al. “The Study of Septic Tank Proximity on Coliform, E. Coli, and Organic Contamination in Shallow Groundwater: A Case Study of DKI Jakarta”. Journal of Community Based Environmental Engineering and Management, vol. 9, no. 1, Jan. 2025, pp. 53-62, doi:10.23969/jcbeem.v9i1.21644.