Globally, a significant portion of water resources relies on groundwater. Approximately half of all drinking water and a quarter of water used for irrigation originates from underground sources.
However, many coastal regions are experiencing a notable decrease in their groundwater levels. This decline poses a substantial risk of saltwater intrusion, a phenomenon where seawater seeps into freshwater aquifers.
A recent study, published in the journal Nature Water, has identified this widespread threat. The research indicates that this issue is not confined to a few isolated areas but spans across the globe.
The findings highlight the critical need to monitor and manage groundwater resources in coastal zones to ensure the continued availability of freshwater for essential human and agricultural needs.
Source: Mongabay