The purity of Aqua Pacific® Natural Artesian Mineral Water is guaranteed by numerous factors:Our artesian water is obtained from a protected natural underground source. This water is constantly monitored for the detection of even the smallest changes in the composition, the alkalinity, the microbiological, or the chemical characteristics of the water to make sure that the purity remains as it has for thousands of years. Additionally, our bottling facilities manufacture our own supply of PET bottles on site. The water is filtered in 9 stage for compliance purposes in order to avoid the use of chemical sterilization. In summary, we do not process Aqua Pacific® water except for filtering. To change its composition would be unthinkable. We simply seek to pass on the perfection that Nature has already provided. Aqua Pacific® meets or exceeds all of the United States Food and Drug Administration standards for bottled water.