Society today is confronted with environmental problems caused by continually increasing economic activities. Particularly, changes to water quality, quantity and availability will be an ongoing impact of climate change in many areas. To cope with these adverse effects, multiple-use water systems are among the management systems and approaches designed by different organizations to tackle such problems in the water sector. These management systems and approaches are based on the assumption of cost sharing. However, water rates based on the willingness to pay have often ignored the resource...