65/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 132 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Septic Service Companies in Marysville, WA (2026)
93 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Marysville: Blackwater Services - Septic System Service, CR Score 65/100; 4.9★ from 132 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): A1 Septic Service, posts 24/7 hours; ranked #2 of 93.
- 12
Most-reviewed: Price Busters Plumbing & Sewer, 781 Google reviews at 4.9★, the most of 93 ranked; ranked #12.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
93 Marysville septic service companies are ranked here by CR Score, from ten published factors. 46 are open 24/7, 70 open Saturdays and 53 open Sundays, based on posted hours. The median Google rating is 4.9★ across 93 rated businesses.
Top 10 septic service companies in Marysville at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Blackwater Services - Septic System Service | 65 | 4.9★ (132) | Marysville | 24/7 | Overall |
| 2 | A1 Septic Service | 64 | 4.9★ (121) | Marysville | 24/7 | Emergencies |
| 3 | A Wesco Septic Services | 63 | 4.8★ (550) | Snohomish, 15 mi away | 24/7 | — |
| 4 | Fresh N Clean Septic | 63 | 4.9★ (663) | Woodinville, 20 mi away | 24/7 | — |
| 5 | Septic Solutions LLC | 63 | 4.9★ (493) | Arlington, 6 mi away | Sat · Evenings | — |
| 6 | All County Septic Service | 62 | 4.9★ (121) | Everett, 11 mi away | 24/7 | — |
| 7 | Superior Septic Services | 62 | 4.7★ (266) | Marysville | Sat | — |
| 8 | A Wesco Septic Services | 61 | 4.7★ (229) | Snohomish, 14 mi away | 24/7 | — |
| 9 | Pro Sewer Repair | 61 | 5.0★ (201) | Everett, 5 mi away | 24/7 | — |
| 10 | A Austin’s Septic Company LLC | 61 | 4.9★ (67) | Snohomish, 9 mi away | 24/7 | — |
The 93 best septic service companies in Marysville, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Marysville
64/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 121 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Snohomish, 15 mi away
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 550 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Woodinville, 20 mi away
63/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 663 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Arlington, 6 mi away
63/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 493 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Everett, 11 mi away
62/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 121 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Marysville
62/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.7★ from 266 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Snohomish, 14 mi away
61/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.7★ from 229 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Everett, 5 mi away
61/100CR ScoreRanked #9 because of its Google rating and review volume: 5.0★ from 201 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Snohomish, 9 mi away
61/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 67 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Everett, 11 mi away
60/100CR ScoreRanked #11 because of its Google rating and review volume: 5.0★ from 279 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lynnwood, 18 mi away
60/100CR ScoreRanked #12 because of its Google rating and review volume: 4.9★ from 781 Google reviews, the most in Marysville.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Marysville
60/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 77 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Everett, 10 mi away
60/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 65 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Marysville
59/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.8★ from 80 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#16 Prime Septic LLC
Based in Arlington, 7 mi away
59/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 78 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#17 The Septic Group
Based in Lake Stevens, 6 mi away
59/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.7★ from 279 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Marysville
58/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Arlington, 12 mi away
58/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.7★ from 73 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lynnwood, 17 mi away
58/100CR ScoreRanked #20 because of its Google rating and review volume: 4.9★ from 268 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Everett, 14 mi away
58/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#22 Lakeside Septic
Based in Snohomish, 11 mi away
58/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 85 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mukilteo, 10 mi away
58/100CR ScoreRanked #23 because of its Google rating and review volume: 4.7★ from 601 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Camano, 15 mi away
57/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.8★ from 28 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Everett, 13 mi away
57/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 90 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
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 93 ranked septic service companies here; the rest are on their profiles.
Also serving Marysville
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 |
|---|---|---|
| 47 Pro Septic Co | 23 mi | |
| All Island Septic and Building | 12 mi | |
| Arnold's Septic Systems | 16 mi | |
| C Johnson Construction, Inc. | 5.0★ (1) | 19 mi |
| Cal Septic LLC | 10 mi | |
| Centennial Septic Service | 12 mi | |
| Clearline Sewer Repair | 5.0★ (1) | 18 mi |
| Earthwise Excavation | 5.0★ (1) | 17 mi |
| ELVROM CONSTRUCTION & EXCAVATING LLC | 5.0★ (2) | 19 mi |
| Grease Masters, Inc | 9 mi | |
| Hackney Designs | 5.0★ (1) | 6 mi |
| Lake Stevens Sewer District | 6 mi | |
| Limitless Sewer Solutions, LLC | 5.0★ (1) | 7 mi |
| Northrup Construction Inc | 5.0★ (1) | 17 mi |
| Pipe Commander Sewer And Septic | 11 mi | |
| Polymer Land Consultants | 3.5★ (2) | 18 mi |
| Pro Flow Plumbing & Sewers | 5.0★ (2) | 11 mi |
| S V Greso | 10 mi | |
| Septic Alert | 15 mi | |
| The Septic Group (Formerly Snohomish Septic) | 1.0★ (2) | In Marysville |
How we ranked Marysville septic service companies
We scored 93 Marysville 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 Marysville 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 Marysville: frequently asked questions
Who is the best septic service company in Marysville?
By CR Score, the highest-ranked septic service company in Marysville, WA is Blackwater Services - Septic System Service with a CR Score of 65/100. It has 4.9★ from 132 Google reviews. It is open 24/7. A1 Septic Service (#2) and A Wesco Septic Services (#3) follow. We ranked 93 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Marysville?
ContractorsRanked ranks 93 septic service companies serving Marysville, WA. 6 of them are based in Marysville; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Marysville are open 24/7?
46 ranked septic service companies in Marysville post 24/7 hours. The highest-ranked are Blackwater Services - Septic System Service (#1), A1 Septic Service (#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 Marysville work on weekends?
70 of 93 ranked septic service companies post Saturday hours and 53 post Sunday hours. The highest-ranked open Saturdays are Blackwater Services - Septic System Service (#1), A1 Septic Service (#2) and A Wesco Septic Services (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Marysville septic service companies have?
The median Google rating among 93 rated septic service companies in Marysville is 4.9★, with a median of 39 reviews. Price Busters Plumbing & Sewer has the most, 781 reviews, and ranks #12. 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 Marysville count in this ranking?
Yes, if they are within 25 mi of the Marysville 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 Marysville
- November 2026: CR Scores recalculated for 93 septic service companies serving Marysville.
- November 2026: 2 duplicate listings merged.
More septic service companies and Marysville pages
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