Connecting the dots between climate change, household water insecurity, and migration

Abstract

Climate change is now considered a primary global driver of migration, with water insecurity theorized to be a key determinant. Most studies have focused on large-scale climate migration events triggered by extreme weather events such as droughts, storms, or floods. But there are few studies of how climate change shapes the everyday household-level experience of water insecurity and subsequent migration decision-making, beyond the contexts of disasters and agricultural livelihoods—an invisible ‘slow drip’ of migration. This review proposes a complementary, alternative framework for linking climate change, household-level water insecurity, and environmental migration by positioning household water insecurity as a critical pathway for shaping migration decision-making in the context of socio-environmental change. We present evidence that household water insecurity is a push factor that motivates household members to migrate due to water-related disruptions to physical and mental health, livelihoods beyond agriculture, and social relationships. We close with implications for anti-poverty and development initiatives, and for water interventions to mitigate forced climate migration.