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Welcome to
Combs Testing Service

Your Premium Full Service Fire Hydrant Repair Company in Washington State

Firehouse Gear

Local Family Owned and Operated Business
Focused on Your Safety and Satisfaction

Never Over Promise and Under Deliver

If you’re looking for a reliable, trustworthy, and efficient Fire Hydrant Repair Firm to manage, maintain and repair your fire hydrants, look no further than Combs Testing Service. Whether it’s one residential hydrant or many hydrants in a neighborhood, municipality or commercial property, we want to take the load off your shoulders by providing a complete range of contracting services across Washington State.

We make every effort to repair rather than replace hydrants. We also utilize a huge resource for obtaining hard to find parts for those old hydrants dating to half a century old. We are fully supported by all manufacturers and distributors including:



Don’t wait until a fire to find out a hydrant isn’t working properly.  Call us and let us know what you need.  

We will schedule an appointment and help you manage your hydrants. 

We serve Washington State including Seattle, Bellevue, Renton, Redmond, Issaquah, Kirkland, Kent, Federal Way, Bellingham, Tacoma, Everett, Edmonds, Puyallup, Sequim, Wenatchee, Ellensburg, Yakima, Tri-Cities, and Spokane.

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Government, Commercial, Industrial or Residential: Your Safety is Our Priority

Combs Testing Service provides a wide range of quality services you need at the reasonable prices you want.  We work with government facilities, municipalities, privately owned corporations, individually owned residences, marinas, and insurance companies.  We install, test, inspect, maintain and repair fire hydrants and are able to source a wide variety of parts to maintain hydrants old and new. 


Many hydrants go without maintenance until they are needed and there's a problem.  Don't let those hydrants be yours. 

All fire hydrants should be properly maintained so they are ready to save lives and protect property.


Get in touch with us today for maintenance, repair and to check the safety of your water supply system.  You’ll be surprised by how convenient and easy it is to do business with us.


Hydrant Install or Inspection

Providing Protection

Yellow fire hydrant



Sourcing Hard to Find Parts


Hydrant Replacement

Ensuring Your Safety


Confidence Testing

Making Your System Reliable


Flow Testing & Pressure Testing

Attention to Detail


Scheduled Maintenance, Service & Painting

Making Your Job Easier

Control Valves

Backflow Assembly Testing, Repair & Service

Services You Need

Man Holding Pipe

Small Water System Management

Something for Everyone

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"Mark has a wide knowledge of all manufacturers' brands and styles of fire hydrants. Adding to that knowledge is his vast experience in the field of Fire Hydrant service, repair and testing. His high standards of workmanship and character ensure that he gets the job done right every time and at a fair price."

Bob Allison
Hallgren Company, Inc.

"I received notice that one of my fire hydrants needed repairs.  I researched hydrant repairs and found Combs Testing.  Not knowing much about the repairs, Mark took the time to explain everything to me in a language I could understand... Mark had the hydrants repaired within a couple of hours.  He did an outstanding job and his prices are more than reasonable.  You will not be disappointed in his work."

Teresa San Diego
Manager, The Douglas Apartments

"I have recently taken your Hands-On Fire Hydrant Maintenance class offered through the WETRC, and wanted to take a moment to give some positive feedback.


Mark Combs has developed a practical class structure that was very effective for instruction. The content itself provided functional knowledge for not only those students who have a history in the waterworks industry, but also for those who are not as experienced.  Mark frequently drew upon the collective knowledge of the class and encouraged the students themselves to address industry issues and answer questions, thus helping to foster a network of alliances. This type of professional collaboration is so crucial, especially in a field that can all too often leave one searching for answers or parts—commonly both.


Between the class content, connections and notebook of valuable resources, I can honestly say that I left class feeling professionally edified.  Thank you to Mark and Green River College for offering such a constructive class. " 

Jenifer Tourtillott
Hallgren Company, Inc.

About Us

Mark Combs has served the Greater Seattle Area area since 2000 and takes pride in his reputation as one of the area’s premium Fire Hydrant Repair Technicians.  He's happily advised clients large and small providing them with a wide range of water & fire hydrant contracting services for all their residential and commercial property needs.  Mark currently instructs the Fire Hydrant course at the Washington Environmental Training Center (WETRC).  All of Mark's technicians received their training and education through the WETRC program at Green River Community College. 


Click here to view Mark's class                         Click here to view WETRC classes

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