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Find Septic system installers and replacers in Snohomish

Avatar for Septic Solutions
Septic Solutions
4.9(
18
)

Serving Snohomish, WA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Everything went perfect. Working with the Health department to get the septic permits takes some time. Once the permit was ready they were out there the next day to start work. They completed it on time and the new septic system in Marysville WA was approved in time for my property to close escrow."
Sometimes Septic System filters can look awful, wich can negatively affect the system's performance. Timely cleaning of your Septic filter helps prevent unplesant issues with your system.
A properly installed and fully functioning Septic System Alarm notifies homeowners of any issues with their Septic System
Installation of a single-compartment Septic Tank for our customer in Stanwood WA
Additional Photos
Additional Photos

+13

Recommended by94%of homeowners
Avatar for Extra Mile Construction LLC
Extra Mile Construction LLC
5.0(
2
)

Serving Snohomish, WA and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"Job was done well. Will be having them do more work in the future including installing our septic, drainage and land scraping. Prices are reasonable. Would highly recommend this business."
Response time12 hrs
5 neighbors recently requested a quote
Avatar for Iron Earth Construction LLC
Iron Earth Construction LLC
5.0(
4
)

Serving Snohomish, WA and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"They quickly assessed the situation, gave a reasonable quote, and were very proficient and professional. My condo unit was under contract and a water leak caused by another unit needed to be repaired asap and they did it. Also kept me well informed."
Before
During rooftop build
Rooftop Deck during
AFter
Installation of Euro Fencing

+43

Response time3 days
10 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Vortex Plumbing Inc
Vortex Plumbing Inc
4.5(
623
)

Serving Snohomish, WA and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"It was difficult to diagnose, but these folks who came did a great job. They were thoughtful, respectful, and knowledgeable about what to do. They considered different options to save me money. They accomplished what needed to be done quickly. They snaked the pipes first from an access in the basement, which did not work; then looked with a camera. Found one blockage; dug down 5 feet outside the house; installed some pvc pipes there to replace old concrete, and installed a clean-out there above ground so the basement would not flood again; then from there flushed the sewer with a power washer which released the flow, but it's expected to be happening again. I appreciated their professional service, and although it was expensive, I know they tried their best to do a good job and save me money as best they could."
Recommended by91%of homeowners
AA Plumbing LLC
4.6(
59
)

Serving Snohomish, WA and surrounding areas

In business since 1992

Emergency services offered

Warranties offered

"I checked out YELP and looked for highly rated Plumbers in our area and called AA Plumbing. This was kismet because I could not have asked for a better experience with a Plumbing company. Curtis made time to come out the same day I called, and ran a camera up the line. While delivering the bad news about the fix, he alleviated the pain by pointing out that the line was clearly shared with my neighbor and that he should also pony up for the repair. Not only did Curtis contact my neighbor directly to discuss the issue and fix, but he also later met up with him to run another camera to prove the fix was needed and it was indeed a shared line. I had many questions throughout the process and Curtis extremely responsive with my calls and texts. On top of ALL that, their work was timely, impeccable and an extremely fair (almost too good to be true). I HIGHLY RECOMMEND giving them a call for all of your plumbing needs."
Plumbing Project
Plumbing Project
Plumbing Project
Plumbing Project
Plumbing Project

+57

Recommended by93%of homeowners
Evergreen Sanitation Inc
4.2(
109
)

Serving Snohomish, WA and surrounding areas

In business since 1957

Free estimates

Emergency services offered

"The Septic tank backed up late yesterday afternoon. I callled two other septic tank companies and had to leave a msg. I called Evergreen Sanitation and within minutes was set up for service first thing this morning. At 7:35 AM I received a call letting me know that the truck and driver were on their way. They arrived at 8:00. By 9:00, problem was resolved. The people that I talked to on the phone were upbeat, professional and efficient. The driver/pumper worked quickly, cleaned up area well and was pleasant. I am truly pleased that the service was performed so quickly."
Response time6 days
Recommended by87%of homeowners
Avatar for In Depth Excavation
In Depth Excavation
4.8(
37
)

Serving Snohomish, WA and surrounding areas

In business since 2018

Free estimates

Emergency services offered

"We needed a French drain installed in our back yard to divert ground water around our septic drain field. Dillon spent the time to understand exactly what our needs were, and to explain what he would be doing. He was responsive and easy to communicate with. He gave us a detailed quote, at a significantly lower price than the other bid. He arrived on time and worked late, and got the job done earlier than promised. He spent the time to clean up the mess. He cleaned up our driveway (where he had temporarily dumped a pile of gravel) and the side of our house (where he drove his equipment back and forth to move dirt and gravel) far better than I expected. I would definitely hire him again."
Additional Photos
Additional Photos
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Additional Photos

+40

Recommended by97%of homeowners
Showing 1-10 of 35
FAQs for septic system installation and replacement projects in Snohomish, WA

The smallest standard septic system uses a 500-gallon tank, which costs between $875 and $1,150 installed. This size works well for single-occupant dwellings with minimal wastewater production. However, many local regulations specify minimum tank sizes, so check with your building department before committing to this compact option. Some jurisdictions require at least 750 gallons regardless of home size to ensure adequate waste processing capacity.

The installation timeline varies based on site conditions, permit processing, and contractor schedules. The process includes obtaining permits, conducting soil tests, excavation, tank placement, leach field construction, and final connections. Weather conditions, soil challenges, and inspection scheduling can all affect the overall timeline. It's wise to begin planning well in advance of when you need the system operational.

The most economical approach is to install a conventional anaerobic system with a plastic tank. To minimize costs while maintaining legality, obtain multiple quotes from licensed installers, consider scheduling during their slower seasons, and handle basic site preparation yourself. Never skip permits or required testing to save money—illegal installations can result in significant fines and mandatory removal, ultimately costing far more than doing it right initially.

Regular pumping helps prevent system failures and extends operational life. Most small systems require pumping every three to five years, though frequency depends on household size and usage patterns. Pumping services cost between $290 and $530, making this maintenance expense relatively minor compared to potential repair costs ranging from $500 to $2,600 for neglected systems. Establishing a regular maintenance schedule based on your installer's recommendations helps avoid costly emergency services.

The Snohomish, WA homeowners’ guide to septic system installations and replacements

From average costs to expert advice, get all the answers you need to get your job done.