We carefully select protected water sources. We bottle at the spring source: water is drawn directly from the spring and bottled. We produce our own proprietary PET bottles on-site to further control the quality of our product. Our bottles also have unique safety caps and seals. The cap's flange underneath prevents air from entering the bottle or water from leaking out of the bottle. We use a double disinfection system: ozonation and 0.1 micron filtration. Only one is required! We meet the stringent European Union standards. Crystal Geyser Alpine Spring Water™ is the only American brand authorized to sell in France. We also meet the Japanese bottled water standards and export to Japan.