Jordan's water shortage and scarcity are one of the biggest sustainability challenges, threatening the potential economic growth, environmental and social development. There has been a growth in the population and increased water consumption, where both of which have put enormous stress on the available water resources. The study tried to better understand the current state of sustainable water demand management in Jordan and the degree to which management capability may be used to reduce water shortage. Box Behnken Design (BBD) was applied in this research to examine the impact of average annual rainfall, population growth, and water demand on the future expected water resources (EWR). The main findings of this research showed that these actions might alleviate Jordan's water crisis effect. The result also demonstrated that the water demand component is the most impactful factor on the future excepted water resources (EWR). The optimum analysis shows that which the responses fulfill the minimum requirements of EWR 1477 MCM and with Average Annual Rainfall = 600 MCM, Population growth = 10203134 million and Water Demand = 1548 MCM. It was concluded that Jordan's sustainable water demand management is facing rapid urbanization and significant groundwater depletion. Subsequently, the kingdom's water future needs and financial growth require a higher level of investment. Overall, the results prove that the average annual rainfall, population growth, and water demand variables were significant effects on the expected water resources, where all of these have a vital role in the sustainable water demand management in Jordan. Keywords: Jordan, water demand, expected water resources, response surface method (RSM), Box Behnken Design (BBD).