The area of West Bank is landlocked; highlands are main recharge area for Israel's coastal aquifers.

The only source of water in the Gaza strip is the coastal aquifer, which is heavily overexploited resulting in seawater intrusion.

Saltwater intrusion occurs naturally to some degree in most coastal aquifers, owing to the hydraulic connection between groundwater and seawater.

The higher pressure and density of saltwater causes it to move into coastal aquifers in a wedge shape under the freshwater.

Almost all the water used in the Palestinian areas other than rainwater is drawn from the underground aquifers (mountain aquifer 52%, coastal aquifer 48%).

Many coastal aquifers are at risk of contamination from agrochemicals and poorly located solid waste disposal, contributing to water scarcity by making resources unavailable.

Another factor in the drop in water supply is contamination of the coastal aquifer, which reduces the amount of water that can be pumped out.

Some plants are intended to help to rehabilitate the southern part of the coastal aquifer, which has been adversely affected by salinity due to overextraction.

Southern California has long been aware of saltwater seepage into its coastal aquifers and has taken measures to prevent it.

Remipedia is a class of blind crustaceans found in coastal aquifers.