Water Footprint in Agriculture: Framework and Conservation Approaches

Abstract

Agriculture is the largest global consumer of freshwater resources, accounting for nearly 70–80% of withdrawals. With accelerated food production, climate change, and rapid land-use transitions, water scarcity has become a pressing challenge for sustainable agriculture. The water footprint (WF) framework has emerged as a comprehensive and widely adopted tool for quantifying freshwater use in agricultural production systems by assessing green, blue, and grey water consumption. This review provides an in-depth overview of water footprint concepts and accounting methods, discusses major drivers and impacts of agricultural water footprints globally. The review finally examines strategies for reducing WF in agriculture, including technological, agronomic, policy and market-based interventions; and highlights role of economic incentives, governance, and institutional reforms in sustainable water use. The findings underscore the need for integrating WF assessments in decision-making, promoting water-efficient technologies, and strengthening governance for long-term water sustainability.