We are a small, family-owned business in the Greater Seattle Area that specializes in commercial and residential backflow testing and repairs.

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At Flow Six we are committed to excellent customer service and the safety of the public water supply. Whether you need one test or repair, or if you would like to get set up in our annual maintenance program, we would love the opportunity to serve you.

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We cover Snohomish, King, North Pierce County, and most Eastside communities.