Backflow Testing & Service INC
Plumbing · Lake Stevens, WA · License #BACKFTS893MR
Expired since Aug 30, 2021
State-verifiedWhat does verified mean?
- State-verified — Checked against WA L&I records, updated daily.
- Owner-verified — The business claimed this listing and verified ownership — free. Claim this listing
- Proven on Subser — The business runs real jobs through Subser — measured performance, not reviews.
License facts
Backflow Testing & Service INC is one of 11 Plumbing contractors registered in Lake Stevens, registered with WA L&I since 2011. Registered longer than roughly 75% of Plumbing contractors in Lake Stevens. Principals on record since 2011.
- License type
- CONSTRUCTION CONTRACTOR
- Effective date
- Aug 5, 2011
- Expiration date
- Aug 30, 2021
- UBI
- 602795219
- Business type
- Corporation
- Phone
- (425) 334-3350
- Location
- Lake Stevens, WA 98258
Source: WA L&I contractor registration — verified Aug 14, 2026. Applies to every row above.
Is this your business? Update your info and take booking requests.
Claim this free listingBond & insurance on file
What the bond and insurance requirements mean for homeowners
A $15,000 surety bond, filed with the Department of Labor & Industries, is a condition of registration for specialty contractors in Washington (general contractors file $30,000).
The bond is a limited fund a homeowner (or subcontractor or supplier) can make a claim against, through the courts, if a registered contractor fails to meet its obligations on a job. Contractors must also keep general liability insurance on file — at least $50,000 in property damage and $200,000 in public liability coverage, or a $250,000 combined single limit — which covers damage the contractor causes, not workmanship disputes. The rows above are the bond and insurance filings L&I publishes for this registration; whether a specific filing applies to a specific project depends on its dates and terms.
Principals
| Name | Start date |
|---|---|
| Thomas Gerard Wahlman | Jul 18, 2011 |
| Kristen Woolwine Wahlman | Jul 18, 2011 |
What is a Plumbing contractor licensed to do in Washington?
A plumbing specialty contractor registration with WA L&I covers plumbing installation and repair work. Individual plumbers in Washington are additionally certified through a separate state plumber-certification program; the contractor registration shown here is the business-level registration. Washington requires a $15,000 surety bond and general liability insurance for this registration. Washington currently lists 11 Plumbing contractors registered in Lake Stevens.
Other Plumbing contractors in Lake Stevens, WA
A Quality Plumber INC
Plumbing · Lake Stevens, WA
License #QUALIQP871CE · $6,000 bond
Flow Control Plumbing LLC
Plumbing · Lake Stevens, WA
License #FLOWCCP837LE · $6,000 bond
MX Plumbing INC
Plumbing · Lake Stevens, WA
License #MXPLUPI903L8 · $6,000 bond
Nobul Plumbing LLC
Plumbing · Lake Stevens, WA
License #NOBULPL793L2
Rodriguez Plumbing LLC
Plumbing · Lake Stevens, WA
License #RODRIPL842CB · $6,000 bond
Browse the directory
Built from Washington State L&I public records, updated Aug 14, 2026. No star ratings or reviews — verification only.