Saline Water Intrusion

Saline water intrusion occurs when salty seawater moves into freshwater sources, often due to human activities like groundwater extraction or changes in natural flow. This process can contaminate drinking water supplies and harm ecosystems. Typically, freshwater and saltwater exist in a balanced interface, but over-pumping or reduced natural flow causes the salty water to encroach into land-based freshwater zones. Managing water use and replenishing aquifers are essential to prevent or mitigate saline intrusion, ensuring safe drinking water and healthy aquatic environments.