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.

Great products, awesome customer service, works as advertised! Great products, awesome customer service! I have highly recommended CosanUSA's Pure Hydration and filtered bottle water container to my family and friends. The Pure Hydration is very easy to set up and works exactly as advertised. The water container is perfect to have when on-the-go. I even filter bottled water from the store just to have my drinking water at it's purest ph levels. (Most bottled waters I've tested were very low in ph levels) Customer service is easy to get in touch with and inquires were always professionally handled. These products are absolutely a great investment in keeping your body healthy! Check out their youtube comparison video: CosanComparison1

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!

I almost bought the $4000 machine I almost bought the $4000 machine, the competitor, then my son in law did research on line and told me about Cosanusa. I returned other One, all I need is water with high ph and don’t need other bells and whistles. Beforehand, I was spending way to much money at these specialty stores and it was a hassle running back and forth, straining my arm and fingers holding the heavy bottles. Now I just change cartridges. I was teking alkaline water for months then went off and felt lousy within two weeks before I realized I needed some kind of permanent machine . Bottles water is not good fir landfills it your body! I use stainless steel containers from Cosanusa. 👍 Martie Garcia RN

Excellent after the sale customer service I purchased Cosan water filtration system Jan 2017. I use it everyday and love it. In April 2018 I received a 15% off coupon reminding me to purchase and change my now year old filters. I missed the deadline! to use the coupon. Bummer. But, how proactive of Cosan to remind then entice me to purchase filters (supposed to be changed every 6 mos or so)! I wrote an email thanking them and hoping to know when another great coupon would come out. I received an email promptly offering me 10% off as I recently retired and let them know any savings would help. They worked with me while also being nice. I love the response time and actions!