Ramanathan, T. and Peramunagama, S.S.M. 2021. Estimating the Willingness to Pay for Existing Domestic Drinking Water Service: Residential Customer Satisfaction Index Model . Advances in Technology. 1, 3 (Dec. 2021), 472–482. DOI:https://doi.org/10.31357/ait.v1i3.5293.