I love the ROPOT(UV) water system. The water tastes amazing (I have the mineral filter that adds minerals back in). In Iowa, we have had very high Nitrates in our water, so having this allows my grandkids, daughter who is nursing, and other family members to be able to drink clean water at my house. It is worth the investment. My only complaint is the amount of waste water. Although, I do rerun the waste water once with new water as pamphlet says is ok. I use the waste water to water plants that I don't harvest for food.