Ashari, T.M. et al. 2026. Water Quality, Sanitation, and WASH Service-Level Assessment in Three Islamic Boarding Schools (Dayah) in Aceh: A Multi-Site Comparative Study. Journal of Community Based Environmental Engineering and Management. 10, 1 (Mar. 2026), 99–108. DOI:https://doi.org/10.23969/jcbeem.v10i1.42131.