According to our records, this business is located at 149 Wallace Ave. in Vallejo (in Solano County), California 94590, the location GPS coordinates are: 38.099442 (latitude), -122.237539 (longitude). Dewans Backflow Services is categorized under Lubricating Equipment (SIC code 3569). Known organization owner is Jerry Dewan. You can contact the company by phone at (707) 642-5224.