58/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 130 Google reviews, listed on Google as “Plumber”.
Best Septic Service Companies in San Dimas, CA (2026)
101 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in San Dimas: EZ Sewers Rooter and Plumbing, CR Score 58/100; 5.0★ from 130 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): SWE Sewer Solutions Construction & Engineering, posts 24/7 hours; ranked #2 of 101.
- 4
Most-reviewed: Option One Plumbing, 3,017 Google reviews at 4.8★, the most of 101 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
101 San Dimas septic service companies are ranked here by CR Score, from ten published factors. 61 are open 24/7, 87 open Saturdays and 71 open Sundays, based on posted hours. The median Google rating is 4.9★ across 101 rated businesses.
Top 10 septic service companies in San Dimas at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | EZ Sewers Rooter and Plumbing | 58 | 5.0★ (130) | Avocado Heights, 6 mi away | 24/7 | Overall |
| 2 | SWE Sewer Solutions Construction & Engineering | 58 | 4.9★ (120) | Glendora, 4 mi away | 24/7 | Emergencies |
| 3 | Sewer Kingz Plumbing & Rooter | 58 | 5.0★ (33) | Monrovia, 13 mi away | 24/7 | — |
| 4 | Option One Plumbing | 58 | 4.8★ (3,017) | Rancho Cucamonga, 14 mi away | 24/7 | Most reviews |
| 5 | Reliable Septic | 58 | 5.0★ (9) | Anaheim, 5 mi away | 24/7 | — |
| 6 | Western Rooter & Plumbing | 58 | 4.9★ (1,562) | Arcadia, 13 mi away | 24/7 | — |
| 7 | I Love Sewers Rooter And Plumbing Sewer Specialties Inc | 57 | 4.9★ (200) | Hacienda Heights, 12 mi away | 24/7 | — |
| 8 | Quality Pumping Services Inc. | 57 | 5.0★ (11) | Ontario, 9 mi away | 24/7 | — |
| 9 | Scott McLeod Plumbing, Inc. | 57 | 4.9★ (756) | Rancho Cucamonga, 10 mi away | 24/7 | — |
| 10 | Urgent Septic Solutions | 57 | 5.0★ (80) | Los Angeles, 23 mi away | 24/7 | — |
The 101 best septic service companies in San Dimas, 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 Glendora, 4 mi away
58/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 120 Google reviews, listed on Google as “Plumber”.
Based in Monrovia, 13 mi away
58/100CR 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 Rancho Cucamonga, 14 mi away
58/100CR ScoreRanked #4 because of its Google rating and review volume: 4.8★ from 3,017 Google reviews, the most in San Dimas.
Based in Anaheim, 5 mi away
58/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Septic system service”.
Based in Arcadia, 13 mi away
58/100CR ScoreRanked #6 because of its Google rating and review volume: 4.9★ from 1,562 Google reviews.
Based in Hacienda Heights, 12 mi away
57/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 200 Google reviews, listed on Google as “Plumber”.
Based in Ontario, 9 mi away
57/100CR ScoreRanked #8 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, 10 mi away
57/100CR ScoreRanked #9 because of its Google rating and review volume: 4.9★ from 756 Google reviews.
Based in Los Angeles, 23 mi away
57/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 80 Google reviews, listed on Google as “Septic system service”.
Based in Jurupa Valley, 18 mi away
57/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.5★ from 120 Google reviews, listed on Google as “Septic system service”.
Based in Glendora, 4 mi away
57/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.8★ from 51 Google reviews, listed on Google as “Plumber”.
Based in La Verne, 2 mi away
56/100CR ScoreRanked #13 because of its Google rating and review volume: 4.8★ from 132 Google reviews.
Based in Anaheim, 18 mi away
56/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 205 Google reviews, listed on Google as “Plumber”.
Based in Whittier, 17 mi away
56/100CR ScoreRanked #15 because of its Google rating and review volume: 4.8★ from 295 Google reviews.
Based in Fontana, 19 mi away
56/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.6★ from 45 Google reviews, listed on Google as “Septic system service”.
Based in Pomona, 5 mi away
56/100CR ScoreRanked #17 because of its Google rating and review volume: 4.9★ from 131 Google reviews.
Based in Monrovia, 11 mi away
55/100CR ScoreRanked #18 because of its Google rating and review volume: 4.9★ from 266 Google reviews.
Based in Upland, 7 mi away
55/100CR ScoreRanked #19 because of its Google rating and review volume: 4.9★ from 147 Google reviews.
Based in Rancho Cucamonga, 14 mi away
55/100CR ScoreRanked #20 because of its Google rating and review volume: 4.9★ from 354 Google reviews.
Based in Rancho Cucamonga, 14 mi away
55/100CR ScoreRanked #21 because of its Google rating and review volume: 5.0★ from 219 Google reviews.
Based in Anaheim, 19 mi away
55/100CR ScoreRanked #22 because of its Google rating and review volume: 4.9★ from 560 Google reviews.
Based in El Monte, 14 mi away
55/100CR ScoreRanked #23 because of its Google rating and review volume: 4.8★ from 362 Google reviews.
Based in Fontana, 19 mi away
54/100CR ScoreRanked #24 because of its Google rating and review volume: 4.8★ from 588 Google reviews.
Based in La Habra, 15 mi away
54/100CR ScoreRanked #25 because of its Google rating and review volume: 4.9★ from 661 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 101 ranked septic service companies here; the rest are on their profiles.
Also serving San Dimas
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 |
|---|---|---|
| All Around Underground Contractors, Inc | 5.0★ (2) | 21 mi |
| Discounted Rooter, West Covina CA | 7 mi | |
| Dustin Plumbing, Drain & Sewer | 1.0★ (1) | 24 mi |
| Eazy Plumbing and Rooter Sewer inspections | 5 mi | |
| GLPS Plumbing & Mechanical Srvs. | 5.0★ (1) | 12 mi |
| Grbcon, Inc. | 8 mi | |
| Liz Septic | 5.0★ (2) | 13 mi |
| Mg plumbing and septic repair Llc | 5.0★ (2) | 24 mi |
| Plumber Pasadena Sewer Cleaning | 5.0★ (1) | 18 mi |
| Plumbing Buddies - Plumber, Tankless Water Heater Replacement & Water Heater Removal, Sewer Repair & Pipe Installation in Glendora, CA | 3 mi | |
| Precision Sewer & Drain Inc. | 5 mi | |
| Quality Pumping Services inc. | 5.0★ (2) | 23 mi |
| Renowned Plumbing & Rooter | 7 mi | |
| SEWER CAMERA INSPECTION | 5.0★ (1) | 25 mi |
| Sewer King | 5.0★ (1) | 22 mi |
| Sewertec | 5 mi | |
| Socal Sewer Plumbing Contractor INC | 8 mi | |
| Tony's Rooter Service Sewer and Drain Paramedics | 5.0★ (1) | 9 mi |
| United Site Services | 5.0★ (1) | 7 mi |
| West Coast Environmental Services Inc. | 9 mi |
How we ranked San Dimas septic service companies
We scored 101 San Dimas 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 San Dimas 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 San Dimas: frequently asked questions
Who is the best septic service company in San Dimas?
By CR Score, the highest-ranked septic service company in San Dimas, CA is EZ Sewers Rooter and Plumbing with a CR Score of 58/100. It has 5.0★ from 130 Google reviews. It is open 24/7. SWE Sewer Solutions Construction & Engineering (#2) and Sewer Kingz Plumbing & Rooter (#3) follow. We ranked 101 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in San Dimas?
ContractorsRanked ranks 101 septic service companies serving San Dimas, CA. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in San Dimas are open 24/7?
61 ranked septic service companies in San Dimas post 24/7 hours. The highest-ranked are EZ Sewers Rooter and Plumbing (#1), SWE Sewer Solutions Construction & Engineering (#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 San Dimas work on weekends?
87 of 101 ranked septic service companies post Saturday hours and 71 post Sunday hours. The highest-ranked open Saturdays are EZ Sewers Rooter and Plumbing (#1), SWE Sewer Solutions Construction & Engineering (#2) and Sewer Kingz Plumbing & Rooter (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do San Dimas septic service companies have?
The median Google rating among 101 rated septic service companies in San Dimas is 4.9★, with a median of 45 reviews. Option One Plumbing has the most, 3,017 reviews, and ranks #4. 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 San Dimas count in this ranking?
Yes, if they are within 25 mi of the San Dimas 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 San Dimas
- November 2026: CR Scores recalculated for 101 septic service companies serving San Dimas.
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