Brackish Water

The word brack is derived from the Dutch brak, which means “salt”. This is a general term for water with a salt content that is too high to drink, but significantly less than that of seawater. As groundwater flows through an aquifer, it reacts with the surrounding soils and rock minerals, resulting in salt concentrations between seawater and fresh water. Most brackish water has a total dissolved solids concentration that ranges from 1,000 to 10,000 milligrams per liter.  With treatment (desalination) brackish water can be a source of drinking water.