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Tri County Septic Services is here for all your septic services in Washington. We are a family owned and operated company and have been in business since 1998. Located in Arlington, Washington, the septic technicians at Tri County can help you with your septic repair, pumping, inspections, and cleaning needs.

From residential to commercial systems, we do them all! Our goal is to provide homeowners with prompt, courteous service, and to educate them on their particular type of septic system. We are one of the only septic companies that has licensed electricians on staff. We feel that sharing knowledge will help prolong the life of your septic system and save you money on costly or unnecessary repairs.
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We are a family owned and operated company and have been in business since 1998. Tri County's goal is to provide homeowners with prompt, courteous service, and to educate them on their particular type of septic system. We are members of WOSSA Washington On-Site Sewage Association, Snohomish Health District Septic Issues Committee, and the former NW Regional Representative for WOSSA.
Our experienced team members are here for your septic pumping needs and are ready travel to any location in the greater Snohomish County, Skagit County, and King County area. Tri County Septic Services uses a truck mounted vacuum system to promptly pump and empty your property's septic system. A septic system requires the pump out service because of solids which accumulate and begin to fill up the septic tank.
Our experienced team members are here for your septic pumping needs and are ready travel to any location in the greater Snohomish County, Skagit County, and King County area. Tri County Septic Services uses a truck mounted vacuum system to promptly pump and empty your property's septic system. A septic system requires the pump out service because of solids which accumulate and begin to fill up the septic tank.
There are basically four types of septic systems. Not all homeowners are free to choose from all four types because local codes may not allow conventional systems to be installed where soil absorption or drain field space is limited. In addition, each has its own advantages and disadvantages. Most localities require a designer to perform a site evaluation.
We are pleased to announce Snohomish County's Savvy Septic program. This rebate program provides up to $200.00 in rebates for septic system inspections ($100.00 per property) and/or riser installation ($50.00 each/up to 2 per property) on residential properties throughout Snohomish County. Funding for rebates is limited and will be issued on a first-come, first-served basis until funding is exhausted.
Reviews (3)
Thavone Insixiengmay
Thavone Insixiengmay
Feb 01, 2022
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I had technician come out and charge $350 for doing nothing. He just said my drainfield needed jetted and I already told him that. Took day off and waited all day and they showed up at 330 in the afternoon.
Didnt get quote for 5 days. Called another company up and they came out that day with scope to see where blockage was. They showed me a broken pipe and where to dig to fix. Very honest and reliable not like Tri County Septic rip off. Do not use this company.
Michael Gabriyelyan
Michael Gabriyelyan
Dec 11, 2021
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I had a "tech" come out to inspect my septic system. He gave me a "it could be a problem with this or that" type answer and charged me 350 bucks. The problem is that I called them and said the same thing over the phone. I already knew where the problem could be. I was hoping for a more concrete answer and that wasn't given. The tech didn't even do much work. He literally picked up a small brick off the lid of the d-box, ran a hose into the box and turned on the water. I was basically robbed. I reached back out to them and explained this situation. I wanted to speak with an owner, but they still
Mikal Eide
Mikal Eide
Jun 15, 2021
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Worst company I have ever dealt with, if I could give zero, I would! Got an “inspection” and they basically tell you to replace everything(even things I’ve had replaced in the last 2yrs) and then say if you don’t replace everything they say, they’ll release said “inspection” with “deficiencies”. Not my first time with these guys, had hoped they changed since I last used them 8yrs ago, but never again. I’m a tri-county anti-ambassador.