LENCHA, Semaria Moga; MUSEMA SHEWAGA; ABREHAM BIRHANE; DANIEL FITAMO. Wastewater System Efficacy and Environmental Impact: Hawassa Referral Hospital, Ethiopia. Ethiopian Journal of Engineering and Technology, Ethiopia, v. 4, p. 181–212, 2025. DOI: 10.82127/ejet.v4i1.1857. Disponível em: https://journals.hu.edu.et/hu-journals/index.php/ejet/article/view/1857.. Acesso em: 20 may. 2026.