Economic Analysis of Treated Wastewater Reuse in Agriculture: Algeria study case

Abstract

Water scarcity is a pressing issue in Algeria, making wastewater reuse an essential alternative for sustaining agricultural production. This study conducts a cost analysis of wastewater reuse in Algerian agriculture, focusing on the economic viability and farmers' perspectives regarding the shift from free access to a subsidized price of 2.5 DZD per cubic meter. The research examines the cost-effectiveness of treated wastewater compared to conventional irrigation sources, highlighting the role of government subsidies in ensuring affordability. A case study was carried out on a wastewater treatment plant with a capacity of 30,000 m³/day, serving a total irrigated area of 745 hectares. Through a survey, farmers' responses were analyzed to assess their satisfaction and willingness to pay. Results indicate that 43% of farmers perceive the cost as inefficient, while 20% express dissatisfaction with pricing. Despite concerns, farmers emphasize the importance of water availability over its price. The findings contribute to policy discussions on water resource management, emphasizing the need for balanced economic strategies that ensure long-term sustainability while addressing farmers' financial constraints. Future research should explore alternative pricing mechanisms and incentive models to enhance wastewater reuse adoption in agriculture.