59/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in Covina, CA (2026)
103 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Covina: Sewer Kingz Plumbing & Rooter, CR Score 59/100; 5.0★ from 33 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Western Rooter & Plumbing, posts 24/7 hours; ranked #2 of 103.
- 9
Most-reviewed: Option One Plumbing, 3,017 Google reviews at 4.8★, the most of 103 ranked; ranked #9.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
103 Covina septic service companies are ranked here by CR Score, from ten published factors. 62 are open 24/7, 88 open Saturdays and 74 open Sundays, based on posted hours. The median Google rating is 4.9★ across 103 rated businesses.
Top 10 septic service companies in Covina at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Sewer Kingz Plumbing & Rooter | 59 | 5.0★ (33) | Monrovia, 8 mi away | 24/7 | Overall |
| 2 | Western Rooter & Plumbing | 59 | 4.9★ (1,562) | Arcadia, 9 mi away | 24/7 | Emergencies |
| 3 | EZ Sewers Rooter and Plumbing | 59 | 5.0★ (130) | Avocado Heights, 5 mi away | 24/7 | — |
| 4 | SWE Sewer Solutions Construction & Engineering | 58 | 4.9★ (120) | Glendora, 3 mi away | 24/7 | — |
| 5 | I Love Sewers Rooter And Plumbing Sewer Specialties Inc | 58 | 4.9★ (200) | Hacienda Heights, 8 mi away | 24/7 | — |
| 6 | Drainiacs Sewer and Drain | 57 | 4.8★ (295) | Whittier, 12 mi away | 24/7 | — |
| 7 | Reliable Septic | 57 | 5.0★ (9) | Anaheim, 8 mi away | 24/7 | — |
| 8 | Jetters 'N' Drains Sewer & Pipe Lining Experts | 57 | 5.0★ (205) | Anaheim, 16 mi away | 24/7 | — |
| 9 | Option One Plumbing | 57 | 4.8★ (3,017) | Rancho Cucamonga, 18 mi away | 24/7 | Most reviews |
| 10 | The Sewer Surgeon | 57 | 4.8★ (51) | Glendora, 3 mi away | 24/7 | — |
The 103 best septic service companies in Covina, 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 Arcadia, 9 mi away
59/100CR ScoreRanked #2 because of its Google rating and review volume: 4.9★ from 1,562 Google reviews.
Based in Avocado Heights, 5 mi away
59/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 130 Google reviews, listed on Google as “Plumber”.
Based in Glendora, 3 mi away
58/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 120 Google reviews, listed on Google as “Plumber”.
Based in Hacienda Heights, 8 mi away
58/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 200 Google reviews, listed on Google as “Plumber”.
Based in Whittier, 12 mi away
57/100CR ScoreRanked #6 because of its Google rating and review volume: 4.8★ from 295 Google reviews.
Based in Anaheim, 8 mi away
57/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Septic system service”.
Based in Anaheim, 16 mi away
57/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 205 Google reviews, listed on Google as “Plumber”.
Based in Rancho Cucamonga, 18 mi away
57/100CR ScoreRanked #9 because of its Google rating and review volume: 4.8★ from 3,017 Google reviews, the most in Covina.
Based in Glendora, 3 mi away
57/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 51 Google reviews, listed on Google as “Plumber”.
Based in Monrovia, 8 mi away
56/100CR ScoreRanked #11 because of its Google rating and review volume: 4.9★ from 266 Google reviews.
Based in Ontario, 13 mi away
56/100CR 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 Rancho Cucamonga, 15 mi away
56/100CR ScoreRanked #13 because of its Google rating and review volume: 4.9★ from 756 Google reviews.
Based in Jurupa Valley, 22 mi away
56/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.5★ from 120 Google reviews, listed on Google as “Septic system service”.
Based in El Monte, 9 mi away
56/100CR ScoreRanked #15 because of its Google rating and review volume: 4.8★ from 362 Google reviews.
Based in Long Beach, 21 mi away
55/100CR ScoreRanked #16 because of its Google rating and review volume: 4.9★ from 1,140 Google reviews.
Based in Anaheim, 17 mi away
55/100CR ScoreRanked #17 because of its Google rating and review volume: 4.9★ from 560 Google reviews.
Based in La Verne, 6 mi away
55/100CR ScoreRanked #18 because of its Google rating and review volume: 4.8★ from 132 Google reviews.
Based in La Habra, 12 mi away
55/100CR ScoreRanked #19 because of its Google rating and review volume: 4.9★ from 661 Google reviews.
Based in Pomona, 8 mi away
55/100CR ScoreRanked #20 because of its Google rating and review volume: 4.9★ from 131 Google reviews.
Based in Fontana, 23 mi away
55/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.6★ from 45 Google reviews, listed on Google as “Septic system service”.
Based in Cerritos, 19 mi away
55/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 102 Google reviews, listed on Google as “Plumber”.
Based in Covina
55/100CR ScoreRanked #23 because of its Google rating and review volume: 4.9★ from 81 Google reviews.
Based in Los Angeles, 21 mi away
54/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Septic system service”.
Based in La Puente, 6 mi away
54/100CR ScoreRanked #25 because of its Google rating and review volume: 4.6★ from 166 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 103 ranked septic service companies here; the rest are on their profiles.
Also serving Covina
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) | 24 mi |
| All Around Underground Contractors, Inc | 5.0★ (2) | 20 mi |
| Discounted Rooter, West Covina CA | 3 mi | |
| Dustin Plumbing, Drain & Sewer | 1.0★ (1) | 21 mi |
| Eazy Plumbing and Rooter Sewer inspections | 8 mi | |
| GLPS Plumbing & Mechanical Srvs. | 5.0★ (1) | 7 mi |
| Grbcon, Inc. | 4 mi | |
| Liz Septic | 5.0★ (2) | 17 mi |
| Plumber Pasadena Sewer Cleaning | 5.0★ (1) | 14 mi |
| Plumbing Buddies - Plumber, Tankless Water Heater Replacement & Water Heater Removal, Sewer Repair & Pipe Installation in Glendora, CA | 3 mi | |
| Precision Sewer & Drain Inc. | 8 mi | |
| Pumped up | 11 mi | |
| Reliant Septic Pumping | 1.0★ (1) | 25 mi |
| SEWER CAMERA INSPECTION | 5.0★ (1) | 20 mi |
| Sewer King | 5.0★ (1) | 20 mi |
| Sewertec | 8 mi | |
| Tony's Rooter Service Sewer and Drain Paramedics | 5.0★ (1) | 5 mi |
| United Site Services | 5.0★ (1) | 3 mi |
| United Site Services | 7 mi | |
| Xclusive Pipeline & Sewer | 10 mi |
How we ranked Covina septic service companies
We scored 103 Covina 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 Covina 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 Covina: frequently asked questions
Who is the best septic service company in Covina?
By CR Score, the highest-ranked septic service company in Covina, CA is Sewer Kingz Plumbing & Rooter with a CR Score of 59/100. It has 5.0★ from 33 Google reviews. It is open 24/7. Western Rooter & Plumbing (#2) and EZ Sewers Rooter and Plumbing (#3) follow. We ranked 103 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Covina?
ContractorsRanked ranks 103 septic service companies serving Covina, CA. 2 of them are based in Covina; 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 Covina are open 24/7?
62 ranked septic service companies in Covina post 24/7 hours. The highest-ranked are Sewer Kingz Plumbing & Rooter (#1), Western Rooter & Plumbing (#2) and EZ Sewers Rooter and Plumbing (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Covina work on weekends?
88 of 103 ranked septic service companies post Saturday hours and 74 post Sunday hours. The highest-ranked open Saturdays are Sewer Kingz Plumbing & Rooter (#1), Western Rooter & Plumbing (#2) and EZ Sewers Rooter and Plumbing (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Covina septic service companies have?
The median Google rating among 103 rated septic service companies in Covina is 4.9★, with a median of 36 reviews. Option One Plumbing has the most, 3,017 reviews, and ranks #9. 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 Covina count in this ranking?
Yes, if they are within 25 mi of the Covina 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 Covina
- November 2026: CR Scores recalculated for 103 septic service companies serving Covina.
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