60/100CR Score
Ranked #1 because of its Google rating and review volume: 4.9★ from 1,562 Google reviews, the most in Altadena.
Best Septic Service Companies in Altadena, CA (2026)
114 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Altadena: Western Rooter & Plumbing, CR Score 60/100; 4.9★ from 1,562 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Sewer Man Septic Tank Pumping, posts 24/7 hours; ranked #2 of 114.
- 23
Most-reviewed: Rooter Man Plumbing, 1,341 Google reviews at 4.8★, the most of 114 ranked after Western Rooter & Plumbing; ranked #23.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
114 Altadena septic service companies are ranked here by CR Score, from ten published factors. 63 are open 24/7, 98 open Saturdays and 78 open Sundays, based on posted hours. The median Google rating is 4.9★ across 114 rated businesses.
Top 10 septic service companies in Altadena at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Western Rooter & Plumbing | 60 | 4.9★ (1,562) | Arcadia, 7 mi away | 24/7 | Overall |
| 2 | Sewer Man Septic Tank Pumping | 60 | 4.8★ (444) | Los Angeles, 22 mi away | 24/7 | Emergencies |
| 3 | Sewer Kingz Plumbing & Rooter | 60 | 5.0★ (33) | Monrovia, 7 mi away | 24/7 | — |
| 4 | Septic Tank Pumping USA | 58 | 4.4★ (12) | La Cañada Flintridge, 5 mi away | 24/7 | — |
| 5 | The Sewer Company | 57 | 4.9★ (215) | Pasadena, 3 mi away | 24/7 | — |
| 6 | All in Sanitation | Grease Trap Cleaning | Septic Pumping | 57 | 5.0★ (13) | Los Angeles, 12 mi away | 24/7 | — |
| 7 | Hassle Free Plumbing | 57 | 4.9★ (266) | Monrovia, 8 mi away | 24/7 | — |
| 8 | I Love Sewers Rooter And Plumbing Sewer Specialties Inc | 57 | 4.9★ (200) | Hacienda Heights, 16 mi away | 24/7 | — |
| 9 | Valley Sanitation LLC | 57 | 4.7★ (26) | Lancaster, 15 mi away | 24/7 | — |
| 10 | Drainiacs Sewer and Drain | 57 | 4.8★ (295) | Whittier, 18 mi away | 24/7 | — |
The 114 best septic service companies in Altadena, 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 Los Angeles, 22 mi away
60/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.8★ from 444 Google reviews, listed on Google as “Septic system service”.
Based in Monrovia, 7 mi away
60/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “Septic system service”.
Based in La Cañada Flintridge, 5 mi away
58/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.4★ from 12 Google reviews, listed on Google as “Septic system service”.
Based in Pasadena, 3 mi away
57/100CR ScoreRanked #5 because of its Google rating and review volume: 4.9★ from 215 Google reviews.
Based in Los Angeles, 12 mi away
57/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Septic system service”.
Based in Monrovia, 8 mi away
57/100CR ScoreRanked #7 because of its Google rating and review volume: 4.9★ from 266 Google reviews.
Based in Hacienda Heights, 16 mi away
57/100CR ScoreRanked #8 because of its Google rating and review volume: 4.9★ from 200 Google reviews.
Based in Lancaster, 15 mi away
57/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.7★ from 26 Google reviews, listed on Google as “Septic system service”.
Based in Whittier, 18 mi away
57/100CR ScoreRanked #10 because of its Google rating and review volume: 4.8★ from 295 Google reviews.
Based in El Monte, 9 mi away
57/100CR ScoreRanked #11 because of its Google rating and review volume: 4.8★ from 362 Google reviews.
Based in Burbank, 11 mi away
56/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 83 Google reviews, listed on Google as “Plumber”.
Based in Glendale, 8 mi away
56/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 50 Google reviews, listed on Google as “Plumber”.
#14 Sequoia Sewer
Based in Altadena
56/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Plumber”.
Based in Long Beach, 21 mi away
56/100CR ScoreRanked #15 because of its Google rating and review volume: 4.9★ from 1,140 Google reviews.
Based in Glendora, 16 mi away
56/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 120 Google reviews, listed on Google as “Plumber”.
Based in Van Nuys, 19 mi away
56/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 125 Google reviews, listed on Google as “Plumber”.
Based in Los Angeles, 5 mi away
56/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.5★ from 48 Google reviews, listed on Google as “Plumber”.
Based in Santa Clarita, 20 mi away
56/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 131 Google reviews, listed on Google as “Plumber”.
Based in North Hills, 14 mi away
56/100CR ScoreRanked #20 because of its Google rating and review volume: 4.7★ from 665 Google reviews.
Based in Avocado Heights, 20 mi away
56/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 130 Google reviews, listed on Google as “Plumber”.
#22 Red Hat Plumbing
Based in Sherman Oaks, 17 mi away
56/100CR ScoreRanked #22 because of its Google rating and review volume: 4.9★ from 479 Google reviews.
Based in North Hills, 22 mi away
56/100CR ScoreRanked #23 because of its Google rating and review volume: 4.8★ from 1,341 Google reviews.
#24 THE DRAIN CO.
Based in North Hills, 17 mi away
55/100CR ScoreRanked #24 because of its Google rating and review volume: 4.9★ from 434 Google reviews.
Based in Burbank, 14 mi away
55/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 41 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 114 ranked septic service companies here; the rest are on their profiles.
Also serving Altadena
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 |
|---|---|---|
| Anytime plumbing and sewer | 5.0★ (1) | 20 mi |
| Burbank Sewer Srevices | 5.0★ (2) | 12 mi |
| Coblentz Plumbing & Sewer Contractors | 5.0★ (1) | 18 mi |
| Deluxe Rooter Sewer & Drain | 5.0★ (2) | 18 mi |
| Downs Pumping Co | 5.0★ (1) | 25 mi |
| Elite Rooter Los Angeles | 5.0★ (1) | 20 mi |
| GLPS Plumbing & Mechanical Srvs. | 5.0★ (1) | 11 mi |
| Golden State Plumbing, Inc. | 5.0★ (2) | 19 mi |
| Hector TM Plumbing - Sewer Line Replacement, Water Heater Repair, Sewer Service & Plumbing Contractor | 5.0★ (1) | 20 mi |
| HUTCH & SON'S Rooter | 5.0★ (2) | 21 mi |
| Los Angeles Septic Service & Drain Clean | 1.0★ (1) | 16 mi |
| Plumber Pasadena Sewer Cleaning | 5.0★ (1) | 2 mi |
| Plumbing Center Bonded Sewer Contractor | 5.0★ (1) | 20 mi |
| Reliant Septic Pumping | 1.0★ (1) | 13 mi |
| SEWER CAMERA INSPECTION | 5.0★ (1) | 7 mi |
| Sewer Flow Plumbing | 1.0★ (1) | 22 mi |
| SewerConnect Co. | 5.0★ (1) | 20 mi |
| Tony's Rooter Service Sewer and Drain Paramedics | 5.0★ (1) | 11 mi |
| United Site Services | 5.0★ (1) | 12 mi |
| Valley Sewer | 5.0★ (1) | 21 mi |
How we ranked Altadena septic service companies
We scored 114 Altadena 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 Altadena 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 Altadena: frequently asked questions
Who is the best septic service company in Altadena?
By CR Score, the highest-ranked septic service company in Altadena, CA is Western Rooter & Plumbing with a CR Score of 60/100. It has 4.9★ from 1,562 Google reviews. It is open 24/7. Sewer Man Septic Tank Pumping (#2) and Sewer Kingz Plumbing & Rooter (#3) follow. We ranked 114 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Altadena?
ContractorsRanked ranks 114 septic service companies serving Altadena, CA. 1 of them is based in Altadena; 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 Altadena are open 24/7?
63 ranked septic service companies in Altadena post 24/7 hours. The highest-ranked are Western Rooter & Plumbing (#1), Sewer Man Septic Tank Pumping (#2) and Sewer Kingz Plumbing & Rooter (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Altadena work on weekends?
98 of 114 ranked septic service companies post Saturday hours and 78 post Sunday hours. The highest-ranked open Saturdays are Western Rooter & Plumbing (#1), Sewer Man Septic Tank Pumping (#2) and Sewer Kingz Plumbing & Rooter (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Altadena septic service companies have?
The median Google rating among 114 rated septic service companies in Altadena is 4.9★, with a median of 32 reviews. Western Rooter & Plumbing has the most, 1,562 reviews, and ranks #1. 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 Altadena count in this ranking?
Yes, if they are within 25 mi of the Altadena 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 Altadena
- November 2026: CR Scores recalculated for 114 septic service companies serving Altadena.
More septic service companies and Altadena pages
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