R.O. Systems International, Inc. 
 
R.O. Systems International, Inc.
19069 Van Buren Blvd.
Suite 114-474
Riverside, CA 92508 USA
Phone: 951-940-4300  800-477-6464
FAX: 951-346-3904
 
Manufacturing quality water treatment equipment for the water treatment dealer since 1989. Built to last. Competitive pricing. Production rates from 150 up to 1,000,000 gpd.