Water can be classified into several types based on its source and characteristics. The most common types include tap water, bottled water, spring water, and distilled water. Tap water is supplied through municipal systems and is treated for safety. Bottled water is packaged for convenience, while spring water comes from natural springs and is often rich in minerals. Distilled water is purified through boiling and condensation, removing impurities and minerals. Another classification of water is based on its salinity. Freshwater has low salt content and is found in rivers, lakes, and glaciers. Saltwater, on the other hand, contains higher salt concentrations and is primarily found in oceans. There is also brackish water, which is a mix of freshwater and saltwater, typically found in estuaries where rivers meet the sea.