I have had a reverse osmosis system in my home for many years. It was installed by Clear Choice and they have been readily available to service the unit for me upon the two or three occasions I needed help over the years. The unit has performed very well and provides excellent, pure water. . . . much better than the 5-gallon bottles I used prior to getting this system. A friend of mine during a visit from Guadalajara exclaimed "Oh, this is GOOD water". It is necessary to replace various filters on a scheduled basis, but Clear Choice has them available. The owners/operators of this business are professional and trustworthy.