Backflow Testing & Service INC

Plumbing Specialty · Lake Stevens, WA · License #BACKFTS893MR

Registration expired per WA L&I as of Aug 30, 2021.

What do these mean?

Backflow Testing & Service INC is one of 11 Plumbing Specialty contractors registered in Lake Stevens, registered with WA L&I since 2011. Registered longer than roughly 75% of Plumbing Specialty contractors in Lake Stevens. Principals on record since 2011.

How confident can you be in Backflow Testing & Service INC?

Are they licensed, bonded, and insured?

Registration expired per WA L&I as of Aug 30, 2021.

Source:License facts on this pageVerify at WA L&I

Are they who they say they are?

Not yet verified — Backflow Testing & Service INC hasn't claimed this listing. Own this business? Claim it free.

Do other pros stand behind them?

No endorsements yet from other licensed contractors in Lake Stevens.

Do they have jobs on record?

Not yet measured — Backflow Testing & Service INC hasn't run jobs through Subser. Performance data comes from real jobs, not reviews.

Subser doesn't do star ratings or reviews — just verified records. What do these mean?

License facts

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 — checked Sep 28, 2026. Applies to every row above.

Registration lapsed Aug 2021 per WA L&I records.

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Bond & 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

NameStart date
Thomas Gerard WahlmanJul 18, 2011
Kristen Woolwine WahlmanJul 18, 2011
What is a Plumbing Specialty 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 Specialty contractors registered in Lake Stevens.

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Subser doesn't have reviews or star ratings. This page shows Backflow Testing & Service INC's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.

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Built from Washington State L&I public records, updated Sep 28, 2026. Subser doesn't do star ratings or reviews — just verified records.