Purified water enhanced with minerals & electrolytes added for taste. purified by reverse osmosis. bottled from water sources meeting requirements of us epa drinking water regulations. to accurately verify ph, use a calibrated ph meter or high range reagent drops. trading symbol: wter. alkaline88.com. to find out more about alkaline88 water quality & information, please visit our website alkaline88.com or call 1-866-242-0240. pet. bpa free.