Caused stomach pain/digestive issues. Three of us drank the water exclusively from the water system all throughout the day. We noticed after about a year that each of us had developed stomach issues. I suggested we stop drinking it for a week and stick to our filtered water out of the refrigerator. All of our issues resolved within a week.

Important change My water now has a good taste & I would recommend this company to anyone who wants Alkaline water. I am reading a book called the PH diet & it says if you can only change one thing right now It would be to drink Alkaline water since it is so important for you.

How do you not have the filters for an alkaline machine a few years old I bought my alkaline machine a few years and the filters Cosan USA sent me to replace are not compatible. How do you not offer the same filters for an older machine? I called and no one answers the phone. I sent an email through the website; and via my gmail. I read their return policy and I would be responsible to return the items. Where do I return it to? I am very disappointed.

Works very well for us .We have well… Works very well for us .We have well water with a good amount of sulfur,and it tastes great coming through the filter!

Was not pleased with customer service or company standards. The main reason why I am giving a 1 star review is their customer service was pretty rude to me when I wanted to return my product. The rep I spoke with rejected the return and after a few emails, finally said the only way they would return it is if the box was never opened and they would have to take a $100 restocking fee. I also believe that the filter replacements are extremely expensive, not to mention the apparatus itself is about $500. Finally, my last complaint is that I was not able to use my warranty as the time for me to sign up elapsed since I was in the midst of trying to get an authorization to return my product. Overall, a bad customer experience to say the least. To be fair, the water filter does appear to be working well so it is a good product. It brings up the PH of my water 2 full points from 7 to 9, but my review is based more so on the company. I will not be recommending them to anyone or purchasing from this company moving forward.