The Puritii Water Filter slightly raises the pH of the water put into the bottle, but the change is so small that we do not report or claim that the filter produces alkaline water. Alkaline water is a growing trend and may offer some health benefits, but these currently have little scientific backing. Every substance we take into our bodies (food, water, supplements, etc.) has an inherent pH that may be either acidic or basic. Soda, for example, is usually between pH 2-3 and is akin to drinking undiluted vinegar. Most vegetables and fruits have alkaline forming compounds. To say that alkaline water has a health effect above that of a healthy and pH-appropriate diet is currently scientifically unsupported.
Each organ system within our bodies has an inherent pH and the ability to buffer incoming substances, be they acidic or alkaline. The Puritii Water Filter removes dangerous chemicals, bacteria, and viruses that are common in tap and bottled water while maintaining the original pH (the pH of tap water is regulated to be between 6.5 and 9.5, so your tap water may be alkaline already).
Because we cannot definitively recommend alkaline water from a health standpoint, we have not included that feature in our Puritii Water Filter and do not plan to incorporate it into future versions of the product.