A mineral spring is a natural source of water that contains minerals, such as calcium, magnesium, and sodium. The term 'mineral spring' is often used interchangeably with the term 'SPA, ' which is a three-letter acronym for the Latin phrase 'salus per aquam, ' meaning 'health through water.' Mineral springs are often used for therapeutic purposes, such as providing relief from stress, improving circulation, and aiding in detoxification.