Backflow Specialty contractors in Seattle, WA
Backflow specialty contractors install and service the backflow prevention assemblies that keep contaminants out of drinking water lines. Washington currently lists 3 Backflow Specialty contractors registered in Seattle.
Aaa Fire Protection INC
Backflow Specialty · Seattle, WA
License #AAAFIFP777PZ · $6,000 bond
Columbia Fire LLC
Backflow Specialty · Seattle, WA
License #COLUMFL755RR · $6,000 bond
Dixon Backflow Testing LLC
Backflow Specialty · Seattle, WA
License #DIXONBT751RQ · $6,000 bond
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Built from Washington State L&I public records, updated Aug 13, 2026. No star ratings or reviews — verification only.