Introduction: It is expected that as the populations and economies of coastal regions grow and climate changes, there will be an increased demand for public water supplies. The exploitation of available water sources will therefore increase to meet these growing demands, therefore all persons responsible for the provision, supervision and regulation of public services must ensure the correct use and exploitation of water resources. Because surface water has been severely contaminated and depleted in some regions, and treating this water is expensive, some service providers find exploiting groundwater to be an efficient source. Aquifers are the primary facilities for storing and transporting groundwater in all regions, including inland and coastal regions. What differentiates an inland aquifer from a coastal aquifer is that the latter interacts with the ocean both on the surface and underground. Coastal freshwater aquifers eventually recharge into the ocean, and so interactions can cause the freshwater aquifer to be affected by the ocean as well as its saltwater aquifer. Given that inappropriate uses of coastal aquifers could lead to irreversible damage up to complete deterioration and inability to use an aquifer for public safety reasons, methodologies and strategies are needed for more appropriate uses of water resources in such a way that is in harmony with the physical and socioeconomic environment. Modeling tools to quantitatively measure available groundwater supply will facilitate the creation of management plans that will allow for more sound management in order to stabilize economic growth, population growth and ensure that it is in line with sustainability and availability. .. ... half of the paper ......ter to replace fresh water.5. Dissolution of groundwater from evaporated materials incorporated into the stratigraphic column. Intense pumping can cause the percolation of salts contained in low permeability areas.6. Movement of groundwater contained in deeper aquifers. Upward movement of groundwater containing high salt content from deep, confined aquifers to shallower aquifers may cause salinity to increase.7. Infiltration of wastewater or irrigation water for domestic or industrial use saturated with dissolved salts.8. Infiltration of brackish water from estuaries or artificial canals can be a source of salinity. In this case there can be 3 types of water interacting in the same aquifer.9. Brackish, salty, or chlorinated water can be trapped in a geological medium and can be mixed with water closer to the surface, given the right conditions.