60/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.8★ from 444 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in Thousand Oaks, CA (2026)
66 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Thousand Oaks: Sewer Man Septic Tank Pumping, CR Score 60/100; 4.8★ from 444 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Septic Tank Pumping SNL, posts 24/7 hours; ranked #2 of 66.
- 8
Most-reviewed: Rooter Man Plumbing, 1,341 Google reviews at 4.8★, the most of 66 ranked; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
66 Thousand Oaks septic service companies are ranked here by CR Score, from ten published factors. 38 are open 24/7, 55 open Saturdays and 43 open Sundays, based on posted hours. The median Google rating is 4.9★ across 66 rated businesses.
Top 10 septic service companies in Thousand Oaks at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Sewer Man Septic Tank Pumping | 60 | 4.8★ (444) | Los Angeles, 23 mi away | 24/7 | Overall |
| 2 | Septic Tank Pumping SNL | 59 | 5.0★ (10) | Thousand Oaks | 24/7 | Emergencies |
| 3 | Michael Penta Septic Tank Pumping | 59 | 5.0★ (31) | Los Angeles, 10 mi away | 24/7 | — |
| 4 | Septic Services of LA | 57 | 5.0★ (4) | Westlake Village, 3 mi away | 24/7 | — |
| 5 | The Sewer Brothers Plumbing and Rooter - Top Rated Plumbers | 56 | 5.0★ (101) | Chatsworth, 15 mi away | 24/7 | — |
| 6 | Advanced Sanitation | 56 | 4.9★ (125) | Oxnard, 11 mi away | — | — |
| 7 | CRC Plumbing | 56 | 4.9★ (54) | Thousand Oaks | 24/7 | — |
| 8 | Rooter Man Plumbing | 56 | 4.8★ (1,341) | North Hills, 23 mi away | 24/7 | Most reviews |
| 9 | Bryco Plumbing | 56 | 4.9★ (528) | Woodland Hills, 13 mi away | 24/7 | — |
| 10 | Sewer Scope Pros of San Fernando Valley | 55 | 5.0★ (58) | Simi Valley, 9 mi away | Sat · Sun · Evenings | — |
The 66 best septic service companies in Thousand Oaks, 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 Thousand Oaks
59/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Septic system service”.
Based in Los Angeles, 10 mi away
59/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Septic system service”.
Based in Westlake Village, 3 mi away
57/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based in Chatsworth, 15 mi away
56/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 101 Google reviews, listed on Google as “Plumber”.
Based in Oxnard, 11 mi away
56/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 125 Google reviews, listed on Google as “Septic system service”.
#7 CRC Plumbing
Based in Thousand Oaks
56/100CR ScoreRanked #7 because of its Google rating and review volume: 4.9★ from 54 Google reviews.
Based in North Hills, 23 mi away
56/100CR ScoreRanked #8 because of its Google rating and review volume: 4.8★ from 1,341 Google reviews, the most in Thousand Oaks.
Based in Woodland Hills, 13 mi away
56/100CR ScoreRanked #9 because of its Google rating and review volume: 4.9★ from 528 Google reviews.
Based in Simi Valley, 9 mi away
55/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 58 Google reviews, listed on Google as “Plumber”.
Based in Camarillo, 10 mi away
55/100CR ScoreRanked #11 because of its Google rating and review volume: 4.8★ from 354 Google reviews.
Based in Oxnard, 19 mi away
54/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 63 Google reviews, listed on Google as “Plumber”.
#13 Red Hat Plumbing
Based in Sherman Oaks, 23 mi away
54/100CR ScoreRanked #13 because of its Google rating and review volume: 4.9★ from 479 Google reviews.
Based in North Hollywood, 16 mi away
54/100CR ScoreRanked #14 because of its Google rating and review volume: 5.0★ from 118 Google reviews.
Based in Ventura, 21 mi away
54/100CR ScoreRanked #15 because of its Google rating and review volume: 5.0★ from 222 Google reviews.
Based in Encino, 18 mi away
54/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 40 Google reviews, listed on Google as “Plumber”.
#17 THE DRAIN CO.
Based in North Hills, 25 mi away
54/100CR ScoreRanked #17 because of its Google rating and review volume: 4.9★ from 434 Google reviews.
Based in Calabasas, 7 mi away
53/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Septic system service”.
Based in Northridge, 17 mi away
53/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Plumber”.
Based in Ventura, 23 mi away
53/100CR ScoreRanked #20 because of its Google rating and review volume: 4.6★ from 565 Google reviews.
Based in Ventura, 21 mi away
53/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Septic system service”.
Based in North Hills, 23 mi away
53/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 44 Google reviews, listed on Google as “Plumber”.
Based in Camarillo, 20 mi away
52/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Septic system service”.
Based in Ventura, 24 mi away
52/100CR ScoreRanked #24 because of its Google rating and review volume: 4.5★ from 668 Google reviews.
Based in Ventura, 23 mi away
52/100CR ScoreRanked #25 because of its Google rating and review volume: 5.0★ from 127 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 66 ranked septic service companies here; the rest are on their profiles.
Also serving Thousand Oaks
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&B Malibu Plumbing, Heating & Electrical | 12 mi | |
| CE Baker Septic Systems | 5.0★ (1) | 20 mi |
| Darrell Roy Enterprises Inc. / Michael Roy | 10 mi | |
| Deluxe Rooter Sewer & Drain | 5.0★ (2) | 24 mi |
| DrainCo | 5.0★ (1) | 24 mi |
| Flex Sanitation | In Thousand Oaks | |
| G.D. Robinson | In Thousand Oaks | |
| Golden State Plumbing, Inc. | 5.0★ (2) | 23 mi |
| Malibu Septic, Inc. | 14 mi | |
| Martin's Rooter & Plumbing | 3.0★ (2) | 22 mi |
| McDermott Plumbing & Pumping | 9 mi | |
| Pacific Materials Laboratory, Inc. | 15 mi | |
| Pronto Plumbing & Septic | 19 mi | |
| Septic Tank Pumping | Grease Trap Pumping | 5.0★ (1) | 9 mi |
| Sewer Flow Plumbing | 1.0★ (1) | 20 mi |
| Sewer Line Video Inspection Company Inc | 5.0★ (2) | 8 mi |
| Sewer Soldiers | 20 mi | |
| Sewer Spy | In Thousand Oaks | |
| Topanga Soils and Septic | 5.0★ (1) | 18 mi |
| Valley Sewer | 5.0★ (1) | 20 mi |
How we ranked Thousand Oaks septic service companies
We scored 66 Thousand Oaks 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 Thousand Oaks 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 Thousand Oaks: frequently asked questions
Who is the best septic service company in Thousand Oaks?
By CR Score, the highest-ranked septic service company in Thousand Oaks, CA is Sewer Man Septic Tank Pumping with a CR Score of 60/100. It has 4.8★ from 444 Google reviews. It is open 24/7. Septic Tank Pumping SNL (#2) and Michael Penta Septic Tank Pumping (#3) follow. We ranked 66 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Thousand Oaks?
ContractorsRanked ranks 66 septic service companies serving Thousand Oaks, CA. 2 of them are based in Thousand Oaks; 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 Thousand Oaks are open 24/7?
38 ranked septic service companies in Thousand Oaks post 24/7 hours. The highest-ranked are Sewer Man Septic Tank Pumping (#1), Septic Tank Pumping SNL (#2) and Michael Penta Septic Tank Pumping (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Thousand Oaks work on weekends?
55 of 66 ranked septic service companies post Saturday hours and 43 post Sunday hours. The highest-ranked open Saturdays are Sewer Man Septic Tank Pumping (#1), Septic Tank Pumping SNL (#2) and Michael Penta Septic Tank Pumping (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Thousand Oaks septic service companies have?
The median Google rating among 66 rated septic service companies in Thousand Oaks is 4.9★, with a median of 29 reviews. Rooter Man Plumbing has the most, 1,341 reviews, and ranks #8. 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 Thousand Oaks count in this ranking?
Yes, if they are within 25 mi of the Thousand Oaks 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 Thousand Oaks
- November 2026: CR Scores recalculated for 66 septic service companies serving Thousand Oaks.
More septic service companies and Thousand Oaks pages
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