Improving Water Pollution Control from Hospital to Protect Ground Water Contamination in Wangi-Wangi Island, Indonesia Uniadi Mangidi, Ranno Marlany Rachman, Agustan, Anafi Minmahddun, Erich Nov Putra Razak International Journal of Dynamics in Engineering System Vol. 1 No. 1 2024 DOI 10.55679/ijdes.v1i1.3