The declining trends of groundwater across the most populous areas of the world are posing an imminent threat to drinking water availability and food security. The United Nations has identified this need to provide clean water, mostly sourced to groundwater, as one of its core sustainable development goals.
Huge groundwater-dependent population, uncertain climate-reliant recharge processes, transboundary upstream water sources, major geogenic-sourced, non-point contaminants, archaic irrigation methods and human practices, and indiscriminate land-use changes with urbanization, have rendered the global groundwater scenario to become an evolving paradigm for water scarcity, for both quantity and quality. Impending climate change is expected to aggravate the situation.
Hence, scientifically-prudent, adaptive groundwater management strategies are immediately required to secure, sustain, and rejuvenate the accessible, residual, unpolluted groundwater through times of changing socio-economic needs.