I finally found the best water system I have ever owned. I had a few more costly, more complex electronic water systems.  They kept breaking down due to the hard water in my area affecting the functioning of the unit. The company did not have any kind of a descaling system that would help alleviate the situation.  They kept replacing my unit which was excellent customer service but it did nothing to address the problem with functionality! The PUR unit I purchased recently from Wayfair is a completely different story. Not only is it a simple, uncomplicated, less expensive filtration system but the water tastes even better! I was not expecting that!  I am more elated with this system than I have been with anything else I have tried and that includes bottled water.  I just use my hard tap water and in a short time I have the best water ever. I am so grateful I took the leap and tried this system.