In many Middle Eastern countries, including Iran, freshwater resources are primarily allocated to agriculture, making the sector the dominant water consumer. However, increasing urban demand has shifted priorities toward municipal water supply, thereby intensifying the imbalance between water availability and consumption. In light of escalating water scarcity and environmental concerns, rainwater harvesting systems (RWHS) have gained attention as a sustainable and environmentally sound approach to water management. RWHS not only reduces the financial burden of water provision but also serves as a reliable source during droughts and periods of restricted access. Despite its potential, adoption of RWHS among farmers remains limited, posing a significant challenge for policymakers. This study investigates the determinants of farmers’ intention to adopt RWHS in Hamidieh County, located in southwestern Iran. An extended Technology Acceptance Model (TAM) was employed, incorporating additional constructs—Subjective Norms (SN), Performance Expectancy (PE), Facilitating Conditions (FC), and Self-Efficacy (SE)—alongside core variables such as Attitude (ATT), Perceived Usefulness (PU), and Perceived Ease of Use (PEU). The proposed model demonstrated strong explanatory power, accounting for 66.9% of the variance in adoption intention. The findings offer critical implications for policy development aimed at promoting sustainable water practices and enhancing the resilience of the agricultural sector.
Savari et al. (Wed,) studied this question.