Coastal Aquifer

A coastal aquifer is an underground layer of water-bearing rock or gravel located beneath the coastlines. It stores freshwater that originates from rain and surface water. Because these aquifers are near the ocean, there's often some mixing between freshwater and salty seawater, creating a natural balance. They are important sources of drinking water and support agriculture and industry in coastal regions. Managing them carefully is essential, as overuse or pollution can reduce water quality, and excessive extraction can cause saltwater intrusion, contaminating the freshwater supply.