Abstract
The main objective of this paper is twofold. First, we attempt to identify the main determinants of domestic water demand in Saudi Arabia. In this respect, we estimate two sets of water demand models for Saudi Arabia from 1994 to 2021. In the first model, we estimate water demand as a function of water price, income, and population. In the second model, we add water-use efficiency (WUE) as an additional variable to examine its role in future domestic water demand. Second, our goal is to project the domestic water demand of Saudi Arabia by 2050 using estimated models 1 and 2.