I'm not given to writing reviews since every time we purchase anything the nagging to do so begins. But this review I want to write. Since moving to New Mexico 15 years ago I have purchased various water softening systems: salt, potassium, citrus and a few electromagnetic devices that attach to the pipes. None of them were to my liking. And then I discovered Cascadian Water. I was able to keep the housings from my last system, the NUVO, which was useless, and just replace the cartridges with Cascadians. What followed was more than surprising. There was a definite change in the quality, the feel, the taste of the water, as well as the minimalizing of deposits on everything that comes in contact with water. I replace the cartridges once a year which takes a very short time and little effort. And an important factor is Cascadian is eco-friendly. I recommend Cascasdian Water without any reservations.