63/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 37 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 Salem, OR (2026)
27 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Salem: Overflow Septic LLC, CR Score 63/100; 4.9★ from 37 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Proline Plumbing and Sewer, posts 24/7 hours; ranked #2 of 27.
- 10
Most-reviewed: Mr. Rooter Plumbing of Newberg, 398 Google reviews at 4.8★, the most of 27 ranked; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
27 Salem septic service companies are ranked here by CR Score, from ten published factors. 10 are open 24/7, 12 open Saturdays and 11 open Sundays, based on posted hours. The median Google rating is 4.9★ across 27 rated businesses.
Top 10 septic service companies in Salem at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Overflow Septic LLC | 63 | 4.9★ (37) | Salem | 24/7 | Overall |
| 2 | Proline Plumbing and Sewer | 62 | 4.9★ (143) | Salem | 24/7 | Emergencies |
| 3 | Legacy Valley LLC | 60 | 5.0★ (38) | Molalla, 13 mi away | 24/7 | — |
| 4 | Stahr Septic Service | 60 | 5.0★ (31) | Salem | Sat | — |
| 5 | NW Sewer & drain | 59 | 4.8★ (45) | Salem | 24/7 | — |
| 6 | West Coast Cipp Supply | 58 | 5.0★ (12) | Salem | — | — |
| 7 | Willamette Valley Sewer and Drain LLC | 58 | 5.0★ (73) | Silverton, 13 mi away | 24/7 | — |
| 8 | Carl's Septic Tank Cleaning | 57 | 4.6★ (38) | Salem | — | — |
| 9 | A & B Septic Services Inc | 56 | 4.9★ (280) | Albany, 24 mi away | — | — |
| 10 | Mr. Rooter Plumbing of Newberg | 56 | 4.8★ (398) | Newberg, 21 mi away | 24/7 | Most reviews |
The 27 best septic service companies in Salem, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Salem
62/100CR ScoreRanked #2 because of its Google rating and review volume: 4.9★ from 143 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Molalla, 13 mi away
60/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Salem
60/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Salem
59/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.8★ from 45 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Salem
58/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Silverton, 13 mi away
58/100CR ScoreRanked #7 because of its Google rating and review volume: 5.0★ from 73 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Salem
57/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.6★ from 38 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Albany, 24 mi away
56/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 280 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Newberg, 21 mi away
56/100CR ScoreRanked #10 because of its Google rating and review volume: 4.8★ from 398 Google reviews, the most in Salem.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Stayton, 7 mi away
55/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#12 Mid Valley Drain
Based in Albany, 16 mi away
54/100CR ScoreRanked #12 because of its Google rating and review volume: 5.0★ from 53 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Keizer, 6 mi away
54/100CR ScoreRanked #13 because of its Google rating and availability: 5.0★ from 16 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Four Corners, 9 mi away
53/100CR ScoreRanked #14 because of its Google rating and review volume: 4.8★ from 37 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Albany, 24 mi away
52/100CR ScoreRanked #15 because of its Google rating and review volume: 5.0★ from 64 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in McMinnville, 20 mi away
52/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.7★ from 24 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Clackamas, 24 mi away
51/100CR ScoreRanked #17 because of its Google rating and review volume: 4.9★ from 168 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dallas, 17 mi away
51/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.5★ from 13 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Woodburn, 18 mi away
51/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Silverton, 12 mi away
49/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.6★ from 21 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Albany, 24 mi away
49/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.5★ from 12 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in McMinnville, 24 mi away
48/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Four Corners, 1 mi away
48/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.0★ from 8 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Salem
47/100CR ScoreRanked #24 because of its Google rating and trade focus: 3.3★ from 12 Google reviews, listed on Google as “Kitchen remodeler”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Albany, 24 mi away
47/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.8★ from 19 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
All 27 septic service companies
#1 to #25 are shown in full above. Here are #26 to #27, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | 3 A Construction LLC | 46 | 5.0★ (9) | 14 mi |
| 27 | Eddie's Plumbing Service | 43 | 4.1★ (13) | 23 mi |
Also serving Salem
12 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 |
|---|---|---|
| 503 Plumbing & Mechanical | 13 mi | |
| A. Pederson's Plumbing, Inc | 16 mi | |
| Ace Septic & Excavating Inc | 5.0★ (2) | 16 mi |
| CAC Excavation Inc | 24 mi | |
| Canyon construction inc | In Salem | |
| Carl's Septic LLC | 5.0★ (1) | 5 mi |
| Groundhog LLC | 5.0★ (1) | 23 mi |
| Hanks Septic Services | 5.0★ (1) | In Salem |
| J.CO Excavating LLC | 5.0★ (2) | In Salem |
| New Line Construction, Inc. | In Salem | |
| Sep-Tech Excavation, Inc. | 5.0★ (1) | In Salem |
| Valley Septic Services | 5.0★ (2) | 20 mi |
How we ranked Salem septic service companies
We scored 27 Salem 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 Salem 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 Salem: frequently asked questions
Who is the best septic service company in Salem?
By CR Score, the highest-ranked septic service company in Salem, OR is Overflow Septic LLC with a CR Score of 63/100. It has 4.9★ from 37 Google reviews. It is open 24/7. Proline Plumbing and Sewer (#2) and Legacy Valley LLC (#3) follow. We ranked 27 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Salem?
ContractorsRanked ranks 27 septic service companies serving Salem, OR. 7 of them are based in Salem; the rest serve it from nearby towns. Another 12 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Salem are open 24/7?
10 ranked septic service companies in Salem post 24/7 hours. The highest-ranked are Overflow Septic LLC (#1), Proline Plumbing and Sewer (#2) and Legacy Valley LLC (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Salem work on weekends?
12 of 27 ranked septic service companies post Saturday hours and 11 post Sunday hours. The highest-ranked open Saturdays are Overflow Septic LLC (#1), Proline Plumbing and Sewer (#2) and Legacy Valley LLC (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Salem septic service companies have?
The median Google rating among 27 rated septic service companies in Salem is 4.9★, with a median of 24 reviews. Mr. Rooter Plumbing of Newberg has the most, 398 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 Salem count in this ranking?
Yes, if they are within 25 mi of the Salem 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 Salem
- November 2026: CR Scores recalculated for 27 septic service companies serving Salem.
More septic service companies and Salem pages
Septic service companies near Salem
- Septic service companies in Four Corners, OR26 ranked
- Septic service companies in Keizer, OR25 ranked
- Septic service companies in Hayesville, OR27 ranked
- Septic service companies in Monmouth, OR23 ranked
- Septic service companies in Dallas, OR23 ranked
- Septic service companies in Woodburn, OR44 ranked
- Septic service companies in McMinnville, OR29 ranked
- Septic service companies in Albany, OR20 ranked
- Septic service companies in Newberg, OR44 ranked
- Septic service companies in Canby, OR51 ranked
Other trades in Salem
- Roofers in Salem392 ranked
- Plumbers in Salem119 ranked
- Electricians in Salem88 ranked
- HVAC contractors in Salem114 ranked
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- Landscapers in Salem93 ranked
- Handymen in Salem43 ranked
- Kitchen remodelers in Salem92 ranked
- Bathroom remodelers in Salem101 ranked
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- Solar installers in Salem43 ranked
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- All contractors in Salem