All drinking water systems are warranted for a period of 5 years from date of purchase. This does not include annual or bi-annual filter replacement.

RO membranes are warranted as followed: Free replacement for up to 8 years from date of purchase if pre and post filters are replaced and maintained yearly or twice yearly by Southwest Water Service, Inc. Maintenance schedule will be determined per individual household and drinking water usage. Membrane 8 year warranty is void if recommended filter maintenance schedule is not performed within an allotted 60 day grace period after date of recorded schedule.

During the warranted period, the defective parts described herein shall be replaced providing the conditions below have been fulfilled and the unit is deemed to be improperly functioning. An improperly functioning system is that which produces less than 12 gallons of product water within a twenty-four hour period when operated within recommended parameters. A defective membrane is described as one with a salt rejection of less than 70%, providing the below stated conditions are fulfilled:

1. The installation has been properly preformed.
2. The temperature of applied water must be between +40ºF and +110ºF.
3. The water pressure must be between 40 P.S.I. and 80 P.S.I. Pressure above 80 P.S.I. voids warranty.
4. The pH of applied water must be between 3.0 and 9.0.
5. The T.D.S. of applied water must not exceed 2000 P.P.M.
6. Warranty registration card returned within 30 days of purchase.
7. Pre and post filter replacement required as described herein.