AquaLiv is a great water system. I've been using it since 2013, and I love it. However, it only gets three stars because the filters are expensive and have to be replaced regardless of the use. AquaLiv also charges for shipping on everything, even purchases well over $100, which most companies don't do in this day and age. The only reason I order the filters and pay for the shipping is because you can't get the filters anywhere else but the AquaLiv site. Essentially, the system is a brick if you don't buy the filters.