Briny water that has more salinity than fresh water, but not as much as seawater, is often referred to as brackish water. Brackish water contains between 0.5 and 30 grams of salt per liter. It is known that the most significant amount of brackish water is found wherever a river meets the sea. While brackish water is salty, it’s not as salty as the water you’d find in the middle of the ocean. Reverse osmosis systems are used to desalinate brackish water. Desalination is the removal of salt from seawater. This is a technical term that is also known as sea water reverse osmosis. It provides essential water for drinking in desert regions or wherever the local water supply is brackish.