Industrial Water Demand Management Model by Using Input-Output Table and Strategic Decision Making with Uncertainty for Water Infrastructure Development

In this paper, industrial water demand management model with strategic decision making model was developed. After assessment water demand with declared governmental policy and supply with water constraints in study area, one of interesting topic is whether water infrastructure project should be invested under uncertainty in the future. This paper shows that, with strategic decision making model, policy maker should make decision to construct new water supply with 10,525 million Thai Baht of benefit in 2016–2025. In case of without this decision model, the net benefit of project is –30,327 million Thai Baht in the same period or this project should not be invested. The main reason why this system should be applied is policy makers can choose the best way or maximum benefit in each water demand growth rate chance and make decision whether water project should be invested by using strategic decision making model with uncertainty in the future.