Backflow Prevention Service locations near Mountlake Terrace, WA
Showing 1–7 of 7 results
We track 7 backflow prevention service listings in and around Mountlake Terrace, WA, spread over 6 ZIP codes. Listings here were last checked in Nov 2026.
Dennis Mclaughlin Backflow Prevention Services
📍 11345 19th Ave Ne, Seattle, WA, 98125
📞 206-364-9531
Updated Nov 2026
Affordable Washington Backflow Testing & Repair
📍 1701 1st St, Snohomish, WA, 98290
📞 360-333-2057
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