Natural spring water and CO2. Est. 1845. 100% natural (100% natural ingredients). Calorie-free. Sources: Poland Spring, Poland Spring, ME; Evergreen Spring, Fryeburg, ME; Spruce Spring, Pierce Pond Township, ME; Garden Spring, Poland, ME; White Cedar Spring, Dallas Plt., ME; Bradbury Spring, Kingfield, ME; and/or Cold Spring, Denmark, ME.