64/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.8★ from 252 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in Wilsonville, OR (2026)
53 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Wilsonville: Lil' Stinky Septic Service, CR Score 64/100; 4.8★ from 252 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Speedy Septic, posts 24/7 hours; ranked #2 of 53.
- 7
Most-reviewed: Alchemy Plumbing & Drain Cleaning, 861 Google reviews at 4.9★, the most of 53 ranked; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
53 Wilsonville septic service companies are ranked here by CR Score, from ten published factors. 27 are open 24/7, 35 open Saturdays and 30 open Sundays, based on posted hours. The median Google rating is 4.9★ across 53 rated businesses.
Top 10 septic service companies in Wilsonville at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Lil' Stinky Septic Service | 64 | 4.8★ (252) | Canby, 5 mi away | 24/7 | Overall |
| 2 | Speedy Septic | 62 | 4.7★ (792) | Portland, 21 mi away | 24/7 | Emergencies |
| 3 | Scout Septic, Grease & Drain | 61 | 4.9★ (341) | Portland, 21 mi away | 24/7 | — |
| 4 | West Side Drain and Septic | 61 | 4.9★ (151) | Hillsboro, 15 mi away | 24/7 | — |
| 5 | Wild Pine Plumbing | 61 | 4.9★ (100) | Portland, 13 mi away | 24/7 | — |
| 6 | Overflow Septic LLC | 60 | 4.9★ (37) | Salem, 7 mi away | 24/7 | — |
| 7 | Alchemy Plumbing & Drain Cleaning | 60 | 4.9★ (861) | Lake Oswego, 6 mi away | 24/7 | Most reviews |
| 8 | Plumbing and Sewer Renewal Specialists | 60 | 5.0★ (539) | Portland, 9 mi away | Sat · Sun · Evenings | — |
| 9 | Honest Drain Solutions LLC | 59 | 5.0★ (42) | Oregon City, 8 mi away | Sat · Sun | — |
| 10 | Legacy Valley LLC | 59 | 5.0★ (38) | Molalla, 16 mi away | 24/7 | — |
The 53 best septic service companies in Wilsonville, 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 Portland, 21 mi away
62/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.7★ from 792 Google reviews, listed on Google as “Septic system service”.
Based in Portland, 21 mi away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 341 Google reviews, listed on Google as “Septic system service”.
Based in Hillsboro, 15 mi away
61/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 151 Google reviews, listed on Google as “Septic system service”.
Based in Portland, 13 mi away
61/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 100 Google reviews, listed on Google as “Septic system service”.
Based in Salem, 7 mi away
60/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 37 Google reviews, listed on Google as “Septic system service”.
Based in Lake Oswego, 6 mi away
60/100CR ScoreRanked #7 because of its Google rating and review volume: 4.9★ from 861 Google reviews, the most in Wilsonville.
Based in Portland, 9 mi away
60/100CR ScoreRanked #8 because of its Google rating and review volume: 5.0★ from 539 Google reviews.
Based in Oregon City, 8 mi away
59/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 42 Google reviews, listed on Google as “Septic system service”.
Based in Molalla, 16 mi away
59/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “Septic system service”.
Based in Hillsboro, 23 mi away
59/100CR ScoreRanked #11 because of its Google rating and review volume: 4.9★ from 800 Google reviews.
#12 Pinkies Septic
Based in Oregon City, 8 mi away
58/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Septic system service”.
Based in Tigard, 9 mi away
58/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 81 Google reviews, listed on Google as “Plumber”.
Based in Cornelius, 20 mi away
56/100CR ScoreRanked #14 because of its Google rating and review volume: 5.0★ from 146 Google reviews.
Based in Tigard, 9 mi away
56/100CR ScoreRanked #15 because of its Google rating and review volume: 5.0★ from 403 Google reviews.
Based in Portland, 23 mi away
56/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 32 Google reviews, listed on Google as “Septic system service”.
Based in Hillsboro, 23 mi away
56/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Septic system service”.
Based in Portland, 10 mi away
56/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 32 Google reviews, listed on Google as “Excavating contractor”.
Based in Clackamas, 4 mi away
55/100CR ScoreRanked #19 because of its Google rating and review volume: 4.9★ from 168 Google reviews.
Based in Portland, 22 mi away
55/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.6★ from 22 Google reviews, listed on Google as “Septic system service”.
Based in Silverton, 20 mi away
55/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 73 Google reviews, listed on Google as “Plumber”.
#22 Proline Plumbing
Based in Portland, 15 mi away
54/100CR ScoreRanked #22 because of its Google rating and review volume: 4.7★ from 178 Google reviews.
Based in Newberg, 23 mi away
54/100CR ScoreRanked #23 because of its Google rating and review volume: 4.8★ from 398 Google reviews.
Based in Portland, 21 mi away
53/100CR ScoreRanked #24 because of its Google rating and review volume: 4.5★ from 386 Google reviews.
Based in Hillsboro, 16 mi away
53/100CR ScoreRanked #25 because of its Google rating and review volume: 4.7★ from 85 Google reviews.
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 53 ranked septic service companies here; the rest are on their profiles.
Also serving Wilsonville
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 |
|---|---|---|
| A Advanced Pumping | 5.0★ (1) | 21 mi |
| Ace Septic & Excavating Inc | 5.0★ (2) | 12 mi |
| CAC Excavation Inc | 5 mi | |
| D&F Drains, Sewers and More | 5.0★ (2) | 23 mi |
| Fuhriman Septic Design & Consulting | 10 mi | |
| HD Fowler Company | 4.3★ (16) | In Wilsonville |
| Jerry's Septic | 24 mi | |
| MB Enterprises, Excavation & Sewer LLC | 5.0★ (2) | 2 mi |
| MRP Services / Metro Rooter USA Plumber Portland | 21 mi | |
| Patriot Fence and Excavation, LLC | 19 mi | |
| Plumbing Systems Solutions, Inc | 24 mi | |
| Portland Septic Pros | 18 mi | |
| Reece Johnson Paving & Excavation | 5.0★ (2) | 6 mi |
| River City Environmental Inc | 5.0★ (1) | 9 mi |
| River City Plumbing | 20 mi | |
| Septic Services in Portland | 16 mi | |
| Sewer & Drain Cleaning & Licensed Journeyman Plumber Portland Area Best Rates in Town | 15 mi | |
| United Rentals - Reliable Onsite Services | 5.0★ (1) | 20 mi |
| Valley Septic Services | 5.0★ (2) | 22 mi |
| VeggieScout Oil LLC - Clackamas | 16 mi |
How we ranked Wilsonville septic service companies
We scored 53 Wilsonville 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 Wilsonville 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 Wilsonville: frequently asked questions
Who is the best septic service company in Wilsonville?
By CR Score, the highest-ranked septic service company in Wilsonville, OR is Lil' Stinky Septic Service with a CR Score of 64/100. It has 4.8★ from 252 Google reviews. It is open 24/7. Speedy Septic (#2) and Scout Septic, Grease & Drain (#3) follow. We ranked 53 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Wilsonville?
ContractorsRanked ranks 53 septic service companies serving Wilsonville, OR. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Wilsonville are open 24/7?
27 ranked septic service companies in Wilsonville post 24/7 hours. The highest-ranked are Lil' Stinky Septic Service (#1), Speedy Septic (#2) and Scout Septic, Grease & Drain (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Wilsonville work on weekends?
35 of 53 ranked septic service companies post Saturday hours and 30 post Sunday hours. The highest-ranked open Saturdays are Lil' Stinky Septic Service (#1), Speedy Septic (#2) and Scout Septic, Grease & Drain (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Wilsonville septic service companies have?
The median Google rating among 53 rated septic service companies in Wilsonville is 4.9★, with a median of 32 reviews. Alchemy Plumbing & Drain Cleaning has the most, 861 reviews, and ranks #7. 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 Wilsonville count in this ranking?
Yes, if they are within 25 mi of the Wilsonville 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 Wilsonville
- November 2026: CR Scores recalculated for 53 septic service companies serving Wilsonville.
- November 2026: 1 duplicate listing merged.
More septic service companies and Wilsonville pages
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