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Our family of brands keeps you flowing.

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STOP Inc

Commercial Service Plumbing

for Western WA

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Certified Backflow Testing

Testing, repair & installation

for Western WA

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Sewer Solutions NW

Trenchless repair serving Snohomish & King Counties

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Pipe Guys

Trenchless repair serving Pierce & King Counties

WHO WE ARE

Poff Inc is a multi-brand service provider focused on plumbing solutions, building long-term value in essential services.

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OUR SERVICES

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COMMERCIAL SERVICE PLUMBING

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UNDERGROUND PIPE REPAIR (CIPP)

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BACKFLOW TESTING, REPAIR, INSTALLATION

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LEAK LOCATING, GREASE TRAP PUMPING

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IN THE SPOTLIGHT:

WHY SEATTLE'S LARGEST COFFEE CHAIN CHOOSES STOP INC

For over 10 years, Seattle's largest coffee chain has called on the friendly plumbing professionals at STOP Inc.

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OUR CUSTOMERS

Managed Infrastructure Upgrades

Water Heater Replacement

A major grocery chain needs regular upgrades. They look to STOP Inc for this annual project, and more.

Multi-Site, Multi-Assembly Tracking

Backflow Testing on a large scale

Why one of the largest school districts in the state selects CBT to handle backflow testing.

Extraordinary Solutions in Extreme Conditions

Sewer Line Repair on a Mountain

A destination ski resort needed underground pipe repair. Learn more about why they picked SSNW, and how we got it done ahead of schedule, and the weather.