Updated: Apr 19, 2026
Location
Address
21818 MOUNTAIN HWY E #88, Spanaway, WA, 98387
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Mike's Backflow Service Plumber
Mike's Backflow Service, 21818 Mountain Hwy E, Spanaway, WA (Owned by: Michael Williams) holds a Plumbing Contractor, Plumbing Contractor license and 1 other license according to the Washington license board.
Their BuildZoom score of 94 ranks in the top 24% of 128,670 Washington licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Mike's Backflow Service, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Mike's Backflow Service Services
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Mike's Backflow Service Contact Information
Phone Number: (253) 345-9658
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Address: 21818 MOUNTAIN HWY E #88, Spanaway, WA 98387
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Verified License
BuildZoom confirmed this contractor's license
Mike's Backflow Service License info
Verified License
| License # | MIKESBS773JD |
| Status | Active |
| State | Washington |
| Type | Plumbing Contractor, Plumbing Contractor |
| Business Type | Individual |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Mike's Backflow Service at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | MIKESBS773JD |
| Status | Inactive |
| City | Tukwila |
| Type | Plumbing Contractor, Backflow Specialty |
| Class | Individual |
| Business Type | Individual |
- According to the The City of Tukwila, WA, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Mike's Backflow Service at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
94
BuildZoom Score
Insured
| Insurer | Ohio Security Ins Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | State Farm Fire & Cas Co |
| Bond Value | $6,000 |
Mike's Backflow Service Employees
MW
Michael Williams
Owner
WP
Williams, Michael Patrick
Owner