Reliable, Affordable, Superior Septic System Maintenance Throughout King & Snohomish Counties

Formerly Snohomish Septic, Woodinville Septic, Kingsgate Septic and Evergreen Onsite, we’ve combined to streamline our operations, and we’re excited to reintroduce ourselves as The Septic Group! Continuing to serve Snohomish and King counties, The Septic Group retains the same personnel with the same expertise, superior septic service and competitive pricing. The only difference you’ll notice is our new name and logo. As always, we provide great responsiveness and an enhanced range of services. We look forward to serving you!

The Septic Group is family-owned and has proudly served home and business septic system needs in King and Snohomish Counties for over 50 years. Whether it’s routine pumping, repair, or septic system maintenance, we’ve become the trusted go-to septic team for thousands of property owners in the area. Don’t suffer the potentially disastrous effects of a major backup or flooded drain field. Give us a call to start on a proper maintenance schedule, and get service for your septic now.

Septic System Maintenance from Licensed Pros

As maintenance requirements change with evolving system technology, we proactively grow our knowledge and skills. In addition to our decades of hands-on experience, we regularly attend continuing education courses taught by Washington On-Site Sewage Association (WOSSA). Our professional crew of licensed and bonded master installers and inspectors can quickly assess your septic system’s service needs and recommend a custom service agreement to keep it running flawlessly.

Custom Service for Your Septic Now!

While we follow basic septic maintenance procedures by the book, we also tailor our approach to deliver service that’s tailored to your needs. Variables such as terrain grade, soil type and maintenance history can affect how your septic system operates, and you can rest assured our recommended solution for service, repair or installation will be thoughtfully fitted to your situation.

Contact Us for System Maintenance

If you need septic system maintenance or new system installation, contact The Septic Group for inspection and a solution that meets your specific requirements. Call our superior septic pros today.

50+ Years of Superior Septic System Maintenance in King & Snohomish Counties – Get Service for Your Septic Now!

Serving Snohomish, Arlington, Bellevue, Bothell, Carnation, Duvall, Edmonds, Everett, Fall City, Granite Falls, Issaquah, Kenmore, Kirkland, Lake Forest Park, Lake Stevens, Lynnwood, Marysville, Mill Creek, Monroe, Mountlake Terrace, Mukilteo, Newcastle, Redmond, Sammamish, Seattle, Stanwood & Woodinville

The Septic Group (Formerly Woodinville Septic Service)

Based on 110 Google reviews

Steve Drumheller

2022-05-16

If you need to get your septic tank replaced, you definitely need to call The Septic Group. These types of installations are quite overwhelming and complicated, so it nice to have some knowledgeable who can walk you through the process. Rhea and her team explained everything to me right from the start, so I knew from the beginning I was in good hands. Everything administratively done on time. The staff was completely on top of all the steps during the entire project. Also, the installers were terrific. Tim and Dylan came out to my house before the project started and we did a walk-around and they explained what I was to expect. We have a landscaped yard that we have worked on for over 25 years, and installers took as much care as they possibly could to preserve and protect our plants and patio, which we really appreciated. Tim and Dylan showed up on time every day and completed the project when they said they would. Tim is a great backhoe operator, and he really did a great job of working around some very tight spaces in my backyard. Lastly, their bid was extremely competitive and was even less than a local contractor that was recommended to me by a neighbor. The Septic Group had to travel over 50 miles each way from Lake Stevens to Normandy Park to install my septic system. I really can't imagine that I would have gotten that good of service from anyone else. Thanks Septic Group!

Suzy Winkle

2022-04-06

On time, right to work, finished in great time. Love this company!

vicki stribling

2022-03-30

Len REID

2022-03-23

Evergreen On-site, division of the Septic Group, performed our annual inspection of our system. Technician did a thorough job and gave us an honest opinion on the current status of it. however, we had to get them back 2 times to correct an alarm issue that was found to be caused by a pump filter they forgot to clean during the initial inspection/service. We were happy with their service and the promptness in doing it.

Bruce Bjorklund

2022-03-16

Had an issue with 100 year old septic, and they went above and beyond to take care of me. Absolutely loved the support and brainstorming I got from the back-office and field team.

Dawn Cook

2022-03-12

the team pumped may septic tank installed collars and new covers, it is a relief to know this very big job was done and done correctly, They also diagnosed and repaired a baffle. Good guys to work with. Would recommended them anytime.

Ted Cherrier

2022-03-02

The Septic Group did a great job for us in repairing and servicing our septic system. Scheduling and billing was easy. The on-site team were pleasant and professional. The crew was on-time for each of the two appointments and were very clear on what was done to the system.

BOB Y

2022-02-24

Gregg Field

The pump went out while they were pumping out the septic tank. They came back promptly the next day and replaced it.