Abstract: A water based drink formulated for consumption by people engaged in athletic or other strenuous activity is disclosed. The drink comprises purified water to which has been added electrolytes (ions) of the type normally lost in such activity and in amounts in proportion to which the electrolytes are normally lost. The drink does not include sugar which increases osmolarity and retards gastric emptying. The drink may consist essentially combinations of purified water, sodium chloride, sodium phosphate, potassium chloride, potassium phosphate, calcium chloride and magnesium chloride with the salts being proportioned as stated.

Abstract: An apparatus and method for purifying and dispensing water for use in a coin operated vending machine is disclosed. The apparatus includes a pair of filters where the preliminary filtering of raw water occurs, a reverse osmosis unit pump and a reverse osmosis unit where the main purification takes place. The permeate output of the reverse osmosis unit passes through a conductivity sensor. If the conductivity is below a predetermined level, the water is sent to a storage tank. If the water is above that level then it is sent back to the reverse osmosis unit pump for further processing by the reverse osmosis unit. Water is extracted from the storage tank by a continuously operating pump which transmits the water through an ultraviolet sterilizer. During a vend cycle the water passing through the ultraviolet sterilizer is dispensed while in the absence of a vend cycle the water passing through the ultraviolet sterilizer is passed back into the storage tank.