Got the RO system for the entire house. It was a fast presentation given by Gary Yee so I was glad my husband had researched it prior otherwise it would have been further over my head. System filters out everything including prescription drugs that get flushed into our water. The water tastes great (like nothing) and leaves my skin soft. My hair has brightened since having it also. It's expensive but it can be used as a major home purchase during tax season so keep that in mind. It also moves with you. Definitely worth every penny.