63/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 663 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in Sammamish, WA (2026)
145 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Sammamish: Fresh N Clean Septic, CR Score 63/100; 4.9★ from 663 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Zoom Drain of Seattle, posts 24/7 hours; ranked #2 of 145.
- 10
Most-reviewed: Gene Johnson Plumbing, 4,041 Google reviews at 4.8★, the most of 145 ranked; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
145 Sammamish septic service companies are ranked here by CR Score, from ten published factors. 77 are open 24/7, 117 open Saturdays and 100 open Sundays, based on posted hours. The median Google rating is 4.9★ across 145 rated businesses.
Top 10 septic service companies in Sammamish at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Fresh N Clean Septic | 63 | 4.9★ (663) | Woodinville, 8 mi away | 24/7 | Overall |
| 2 | Zoom Drain of Seattle | 63 | 5.0★ (835) | Seattle, 14 mi away | 24/7 | Emergencies |
| 3 | A Wesco Septic Services | 61 | 4.8★ (550) | Snohomish, 14 mi away | 24/7 | — |
| 4 | Washington Rooter Sewer & Drain Service LLC | 60 | 5.0★ (310) | Bellevue, 3 mi away | 24/7 | — |
| 5 | American Rooter Sewer & Drain Service LLC | 60 | 5.0★ (316) | Bellevue, 4 mi away | 24/7 | — |
| 6 | Puget Sound Septic | 59 | 5.0★ (413) | Maple Valley, 18 mi away | Sat · Sun · Evenings | — |
| 7 | 2 Sons Plumbing, Sewer, Septic, Electric, Heating & Air | 59 | 4.9★ (3,532) | Seattle, 14 mi away | Sat · Sun · Evenings | — |
| 8 | A Wesco Septic Services | 59 | 4.7★ (229) | Snohomish, 15 mi away | 24/7 | — |
| 9 | Septic Response | 58 | 4.9★ (213) | Kirkland, 6 mi away | 24/7 | — |
| 10 | Gene Johnson Plumbing | 58 | 4.8★ (4,041) | Seattle, 14 mi away | 24/7 | Most reviews |
The 145 best septic service companies in Sammamish, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Seattle, 14 mi away
63/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 835 Google reviews, listed on Google as “Septic system service”.
Based in Snohomish, 14 mi away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 550 Google reviews, listed on Google as “Septic system service”.
Based in Bellevue, 3 mi away
60/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 310 Google reviews, listed on Google as “Plumber”.
Based in Bellevue, 4 mi away
60/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 316 Google reviews, listed on Google as “Plumber”.
Based in Maple Valley, 18 mi away
59/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 413 Google reviews, listed on Google as “Septic system service”.
Based in Seattle, 14 mi away
59/100CR ScoreRanked #7 because of its Google rating and review volume: 4.9★ from 3,532 Google reviews.
Based in Snohomish, 15 mi away
59/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.7★ from 229 Google reviews, listed on Google as “Septic system service”.
Based in Kirkland, 6 mi away
58/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 213 Google reviews, listed on Google as “Plumber”.
Based in Seattle, 14 mi away
58/100CR ScoreRanked #10 because of its Google rating and review volume: 4.8★ from 4,041 Google reviews, the most in Sammamish.
Based in Lynnwood, 16 mi away
58/100CR ScoreRanked #11 because of its Google rating and review volume: 4.9★ from 781 Google reviews.
Based in Everett, 20 mi away
58/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 121 Google reviews, listed on Google as “Septic system service”.
Based in Seattle, 11 mi away
58/100CR ScoreRanked #13 because of its Google rating and review volume: 4.8★ from 409 Google reviews.
Based in Camano, 9 mi away
58/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 45 Google reviews, listed on Google as “Septic system service”.
Based in Seattle, 12 mi away
57/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 218 Google reviews, listed on Google as “Plumber”.
Based in Seattle, 13 mi away
57/100CR ScoreRanked #16 because of its Google rating and review volume: 4.7★ from 716 Google reviews.
Based in Everett, 7 mi away
57/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 124 Google reviews, listed on Google as “Plumber”.
Based in Seattle, 14 mi away
57/100CR ScoreRanked #18 because of its Google rating and review volume: 4.8★ from 2,646 Google reviews.
#19 Inspection Boss
Based in Everett, 9 mi away
57/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “Septic system service”.
Based in Woodinville, 10 mi away
57/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.8★ from 17 Google reviews, listed on Google as “Septic system service”.
Based in Lynnwood, 14 mi away
57/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 268 Google reviews, listed on Google as “HVAC contractor”.
Based in Bellevue, 2 mi away
57/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 36 Google reviews, listed on Google as “Plumber”.
Based in Redmond, 3 mi away
57/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 33 Google reviews, listed on Google as “Septic system service”.
Based in Issaquah, 8 mi away
57/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 98 Google reviews, listed on Google as “Plumber”.
Based in Bothell, 12 mi away
56/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 151 Google reviews, listed on Google as “Plumber”.
Septic service companies ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 145 ranked septic service companies here; the rest are on their profiles.
Also serving Sammamish
20 more septic service companies within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Ace Sewer Line Repair Services | 12 mi | |
| Clearline Sewer Repair | 5.0★ (1) | 14 mi |
| CLS Septics & Electrical | 5.0★ (1) | 20 mi |
| E & R Septic & Landscaping | 5.0★ (1) | 25 mi |
| Earthwise Excavation | 5.0★ (1) | 12 mi |
| Evergreen Sanitation | 1.0★ (1) | 13 mi |
| Evergreen Sewer | 5.0★ (1) | 20 mi |
| Gravity Sewer Repair | 17 mi | |
| I Need A Plumber Now and Sewer Services | 5.0★ (2) | 11 mi |
| Insight Septic Design | 5.0★ (2) | 14 mi |
| Joe the Pro Plumbing, Septic, Sewer, Heating & Air | 17 mi | |
| Limitless Sewer Solutions, LLC | 5.0★ (1) | 23 mi |
| Neighbor's Sno-Valley Septic | 17 mi | |
| Northrup Construction Inc | 5.0★ (1) | 18 mi |
| Pipe Commander Sewer And Septic | 19 mi | |
| Pro Flow Plumbing & Sewers | 5.0★ (2) | 19 mi |
| S V Greso | 19 mi | |
| Seattle Septic Pros | 12 mi | |
| Sorrell Septic Design LLC | 5.0★ (2) | 9 mi |
| Wadleigh Water and Sewer | 5.0★ (2) | 13 mi |
How we ranked Sammamish septic service companies
We scored 145 Sammamish septic service companies on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 3, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Sammamish data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Septic service companies in Sammamish: frequently asked questions
Who is the best septic service company in Sammamish?
By CR Score, the highest-ranked septic service company in Sammamish, WA is Fresh N Clean Septic with a CR Score of 63/100. It has 4.9★ from 663 Google reviews. It is open 24/7. Zoom Drain of Seattle (#2) and A Wesco Septic Services (#3) follow. We ranked 145 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Sammamish?
ContractorsRanked ranks 145 septic service companies serving Sammamish, WA. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Sammamish are open 24/7?
77 ranked septic service companies in Sammamish post 24/7 hours. The highest-ranked are Fresh N Clean Septic (#1), Zoom Drain of Seattle (#2) and A Wesco Septic Services (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Sammamish work on weekends?
117 of 145 ranked septic service companies post Saturday hours and 100 post Sunday hours. The highest-ranked open Saturdays are Fresh N Clean Septic (#1), Zoom Drain of Seattle (#2) and A Wesco Septic Services (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Sammamish septic service companies have?
The median Google rating among 145 rated septic service companies in Sammamish is 4.9★, with a median of 39 reviews. Gene Johnson Plumbing has the most, 4,041 reviews, and ranks #10. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank septic service companies?
Each septic service company gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do septic service companies outside Sammamish count in this ranking?
Yes, if they are within 25 mi of the Sammamish city center, our service radius for septic service companies. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Can septic service companies pay to rank higher on ContractorsRanked?
No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.
Update log for Sammamish
- November 2026: CR Scores recalculated for 145 septic service companies serving Sammamish.
- November 2026: 1 duplicate listing merged.
More septic service companies and Sammamish pages
Septic service companies near Sammamish
- Septic service companies in Redmond, WA151 ranked
- Septic service companies in City of Sammamish, WA146 ranked
- Septic service companies in Union Hill-Novelty Hill, WA147 ranked
- Septic service companies in West Lake Sammamish, WA149 ranked
- Septic service companies in Klahanie, WA143 ranked
- Septic service companies in Bellevue, WA158 ranked
- Septic service companies in Kirkland, WA158 ranked
- Septic service companies in Cottage Lake, WA143 ranked
- Septic service companies in Kingsgate, WA153 ranked
- Septic service companies in Newcastle, WA157 ranked
Other trades in Sammamish
- Roofers in Sammamish1151 ranked
- Plumbers in Sammamish601 ranked
- Electricians in Sammamish509 ranked
- HVAC contractors in Sammamish526 ranked
- General contractors in Sammamish1467 ranked
- Painters in Sammamish490 ranked
- Landscapers in Sammamish390 ranked
- Handymen in Sammamish196 ranked
- Kitchen remodelers in Sammamish733 ranked
- Bathroom remodelers in Sammamish721 ranked
- Flooring contractors in Sammamish477 ranked
- Tile installers in Sammamish145 ranked
- Drywall contractors in Sammamish42 ranked
- Concrete contractors in Sammamish297 ranked
- Fence contractors in Sammamish274 ranked
- Deck builders in Sammamish442 ranked
- Siding contractors in Sammamish365 ranked
- Window installers in Sammamish382 ranked
- Gutter installers in Sammamish393 ranked
- Insulation contractors in Sammamish148 ranked
- Solar installers in Sammamish77 ranked
- Garage door repair companies in Sammamish231 ranked
- Foundation repair companies in Sammamish137 ranked
- Tree services in Sammamish278 ranked
- Masonry contractors in Sammamish195 ranked
- Water damage restoration companies in Sammamish519 ranked
- Home builders in Sammamish628 ranked
- Demolition contractors in Sammamish113 ranked
- Window cleaners in Sammamish152 ranked
- Pressure washing companies in Sammamish229 ranked
- Pest control companies in Sammamish159 ranked
- Paving contractors in Sammamish187 ranked
- Auto glass repair shops in Sammamish153 ranked
- Excavating contractors in Sammamish180 ranked
- Pool builders in Sammamish51 ranked
- All contractors in Sammamish