Most coastal areas worldwide depend entirely on groundwater as their main source of fresh water. There are many sources of groundwater pollution due to human influence seawater intrusion is one of these sources. This problem is more acute in arid and semi-arid areas (including most of the Mediterranean coastline), since this groundwater is used as a source of fresh water, this is the case in most of the coastal regions of Libya. A mixture of seawater and freshwater in the coastal areas makes freshwater aquifers unsuitable for human consumption, as a 5% mixture of seawater causes most fresh water to become contaminated and makes aquifers highly vulnerable to pollution. This problem has caused the water framework directive to put forward renewed plans to define and to set the basis for understanding the phenomenon of seawater intrusion in the coastal regions, as it has a severe impact not only on the contamination of freshwater resources but also on natural systems of potential environmental interest. Survey was employed to show the significance of seawater intrusions phenomena in Azawia city, Libya that represented by comparison of chemical parameters in climate types, the length of distance from the sea, and the soil types. There are seawater intrusions in Azawia city, Libya. It is shown by the level of chloride and electrical conductivity in the points of sample collections. Chloride and TDS level conditions are influenced by climate types, the length of distance, and the soil types. Calcium and Magmessium are influenced by the climate types and the length of distance from the sea. And Natrium is influenced by difference in climate types. TDS level of all of the samples shows that there are only one well that fulfill WHO suitability standard.

Keywords:seawater intrusions, az zawiya city, influence, climate, distance from the sea, soil types

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