The remote Rocky Mountains of the Lost River Range have a violent volcanic past. One of the many benefits of that past are the ancient layers of rock that provide a natural filter and rich minerals for Proud Source Water. The source of our water lies deep within the earth’s granite crust shaped by the Yellowstone super-volcano caldera. Our aquifer is situated between a field of powerful active faults that apply tremendous pressure to the water forcing it up through fissures in the granite. As the water makes its journey through these layers of rock, it springs forth from a registered and protected spring in Custer County, Idaho. Here it is bottled and shared with thirsty people everywhere.