Design and Implementation of a Low-Cost IoT Model for Real-Time Water Quality Monitoring in Resource-Constrained Environments. MUST JOURNAL OF RESEARCH AND DEVELOPMENT, [S. l.], v. 7, n. 3, p. 16, 2026. Disponível em: https://mjrd.must.ac.tz/index.php/mjrd/article/view/947.. Acesso em: 18 sep. 2026.