60/100CR Score
Ranked #1 because of its Google rating and review volume: 4.9★ from 1,140 Google reviews.
Best Septic Service Companies in Downey, CA (2026)
142 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Downey: Mr. Rooter Plumbing of Long Beach, CR Score 60/100; 4.9★ from 1,140 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Drainiacs Sewer and Drain, posts 24/7 hours; ranked #2 of 142.
- 6
Most-reviewed: Western Rooter & Plumbing, 1,562 Google reviews at 4.9★, the most of 142 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
142 Downey septic service companies are ranked here by CR Score, from ten published factors. 76 are open 24/7, 119 open Saturdays and 95 open Sundays, based on posted hours. The median Google rating is 4.9★ across 142 rated businesses.
Top 10 septic service companies in Downey at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Mr. Rooter Plumbing of Long Beach | 60 | 4.9★ (1,140) | Long Beach, 4 mi away | 24/7 | Overall |
| 2 | Drainiacs Sewer and Drain | 59 | 4.8★ (295) | Whittier, 6 mi away | 24/7 | Emergencies |
| 3 | Fanti Sewer & Drains | 59 | 5.0★ (102) | Cerritos, 5 mi away | 24/7 | — |
| 4 | I Love Sewers Rooter And Plumbing Sewer Specialties Inc | 58 | 4.9★ (200) | Hacienda Heights, 10 mi away | 24/7 | — |
| 5 | Legacy Sewer and Drain | 58 | 4.9★ (156) | Signal Hill, 9 mi away | 24/7 | — |
| 6 | Western Rooter & Plumbing | 58 | 4.9★ (1,562) | Arcadia, 15 mi away | 24/7 | Most reviews |
| 7 | Valley Sanitation LLC | 58 | 4.7★ (26) | Lancaster, 10 mi away | 24/7 | — |
| 8 | ARS/Rescue Rooter Plumbing Sewer Drains | 58 | 4.7★ (649) | Costa Mesa, 16 mi away | 24/7 | — |
| 9 | Jetters 'N' Drains Sewer & Pipe Lining Experts | 58 | 5.0★ (205) | Anaheim, 14 mi away | 24/7 | — |
| 10 | Sewer Kingz Plumbing & Rooter | 58 | 5.0★ (33) | Monrovia, 16 mi away | 24/7 | — |
The 142 best septic service companies in Downey, 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 Whittier, 6 mi away
59/100CR ScoreRanked #2 because of its Google rating and review volume: 4.8★ from 295 Google reviews.
Based in Cerritos, 5 mi away
59/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 102 Google reviews, listed on Google as “Plumber”.
Based in Hacienda Heights, 10 mi away
58/100CR ScoreRanked #4 because of its Google rating and review volume: 4.9★ from 200 Google reviews.
Based in Signal Hill, 9 mi away
58/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 156 Google reviews, listed on Google as “Plumber”.
Based in Arcadia, 15 mi away
58/100CR ScoreRanked #6 because of its Google rating and review volume: 4.9★ from 1,562 Google reviews, the most in Downey.
Based in Lancaster, 10 mi away
58/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.7★ from 26 Google reviews, listed on Google as “Septic system service”.
Based in Costa Mesa, 16 mi away
58/100CR ScoreRanked #8 because of its Google rating and review volume: 4.7★ from 649 Google reviews.
Based in Anaheim, 14 mi away
58/100CR ScoreRanked #9 because of its Google rating and review volume: 5.0★ from 205 Google reviews.
Based in Monrovia, 16 mi away
58/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “Septic system service”.
Based in Irvine, 23 mi away
58/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 80 Google reviews, listed on Google as “Septic system service”.
Based in Los Angeles, 10 mi away
57/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Septic system service”.
Based in Paramount, 5 mi away
57/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Plumber”.
Based in Los Angeles, 8 mi away
56/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Septic system service”.
Based in Anaheim, 15 mi away
56/100CR ScoreRanked #15 because of its Google rating and review volume: 4.9★ from 560 Google reviews.
Based in Van Nuys, 17 mi away
56/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 125 Google reviews, listed on Google as “Plumber”.
Based in Avocado Heights, 17 mi away
56/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 130 Google reviews, listed on Google as “Plumber”.
Based in El Monte, 11 mi away
56/100CR ScoreRanked #18 because of its Google rating and review volume: 4.8★ from 362 Google reviews.
Based in La Habra, 11 mi away
56/100CR ScoreRanked #19 because of its Google rating and review volume: 4.9★ from 661 Google reviews.
#20 A-1 Sewer Pros
Based in North Tustin, 3 mi away
56/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 40 Google reviews, listed on Google as “Plumber”.
Based in Lakewood, 8 mi away
56/100CR ScoreRanked #21 because of its Google rating and review volume: 4.9★ from 321 Google reviews.
Based in Monterey Park, 7 mi away
55/100CR ScoreRanked #22 because of its Google rating and review volume: 4.8★ from 123 Google reviews.
Based in Glendora, 20 mi away
55/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 120 Google reviews, listed on Google as “Plumber”.
Based in Monrovia, 17 mi away
55/100CR ScoreRanked #24 because of its Google rating and review volume: 4.9★ from 266 Google reviews.
#25 THE DRAIN CO.
Based in North Hills, 20 mi away
55/100CR ScoreRanked #25 because of its Google rating and review volume: 4.9★ from 434 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 142 ranked septic service companies here; the rest are on their profiles.
Also serving Downey
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 |
|---|---|---|
| Abel Real Plumbing | 5.0★ (1) | 11 mi |
| All Around Underground Contractors, Inc | 5.0★ (2) | 18 mi |
| Burbank Sewer Srevices | 5.0★ (2) | 20 mi |
| Coblentz Plumbing & Sewer Contractors | 5.0★ (1) | 15 mi |
| Dustin Plumbing, Drain & Sewer | 1.0★ (1) | 11 mi |
| Elite Rooter Los Angeles | 5.0★ (1) | 17 mi |
| Epd Consultants, Inc | 5.0★ (1) | 11 mi |
| GLPS Plumbing & Mechanical Srvs. | 5.0★ (1) | 11 mi |
| Hector TM Plumbing - Sewer Line Replacement, Water Heater Repair, Sewer Service & Plumbing Contractor | 5.0★ (1) | 17 mi |
| HUTCH & SON'S Rooter | 5.0★ (2) | 17 mi |
| Los Angeles Septic Service & Drain Clean | 1.0★ (1) | 15 mi |
| Outlaws Septic Pumping | 5.0★ (1) | 14 mi |
| Plumber Pasadena Sewer Cleaning | 5.0★ (1) | 15 mi |
| Plumbing Center Bonded Sewer Contractor | 5.0★ (1) | 17 mi |
| Reliant Septic Pumping | 1.0★ (1) | 16 mi |
| SEWER CAMERA INSPECTION | 5.0★ (1) | 15 mi |
| SewerConnect Co. | 5.0★ (1) | 17 mi |
| Socal Sewer & Plumbing Contractors Inc | 5.0★ (1) | 14 mi |
| Tony's Rooter Service Sewer and Drain Paramedics | 5.0★ (1) | 14 mi |
| United Site Services | 5.0★ (1) | 17 mi |
How we ranked Downey septic service companies
We scored 142 Downey 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 Downey 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 Downey: frequently asked questions
Who is the best septic service company in Downey?
By CR Score, the highest-ranked septic service company in Downey, CA is Mr. Rooter Plumbing of Long Beach with a CR Score of 60/100. It has 4.9★ from 1,140 Google reviews. It is open 24/7. Drainiacs Sewer and Drain (#2) and Fanti Sewer & Drains (#3) follow. We ranked 142 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Downey?
ContractorsRanked ranks 142 septic service companies serving Downey, CA. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Downey are open 24/7?
76 ranked septic service companies in Downey post 24/7 hours. The highest-ranked are Mr. Rooter Plumbing of Long Beach (#1), Drainiacs Sewer and Drain (#2) and Fanti Sewer & Drains (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Downey work on weekends?
119 of 142 ranked septic service companies post Saturday hours and 95 post Sunday hours. The highest-ranked open Saturdays are Mr. Rooter Plumbing of Long Beach (#1), Drainiacs Sewer and Drain (#2) and Fanti Sewer & Drains (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Downey septic service companies have?
The median Google rating among 142 rated septic service companies in Downey is 4.9★, with a median of 27 reviews. Western Rooter & Plumbing has the most, 1,562 reviews, and ranks #6. 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 Downey count in this ranking?
Yes, if they are within 25 mi of the Downey 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 Downey
- November 2026: CR Scores recalculated for 142 septic service companies serving Downey.
- November 2026: 1 duplicate listing merged.
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