“Analysis of Drinking Water Quality in One of the Spings in Umbul Songo, Kopeng, Semarang District: Analisis Kualitas Air Minum pada Salah Satu Sumber Mata Air di Umbul Songo, Kopeng Kabupaten Semarang” (2025) Jurnal Lingkungan Nusantara (JLN), 2(1), pp. 29–45. Available at: https://journal.jantoscv.com/index.php/jln/article/view/8 (Accessed: 13 October 2026).