60/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 3,017 Google reviews, the most in Montclair.
Best Septic Service Companies in Montclair, CA (2026)
105 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Montclair: Option One Plumbing, CR Score 60/100; 4.8★ from 3,017 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Quality Pumping Services Inc., posts 24/7 hours; ranked #2 of 105.
- 16
Most-reviewed: Western Rooter & Plumbing, 1,562 Google reviews at 4.9★, the most of 105 ranked after Option One Plumbing; ranked #16.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
105 Montclair septic service companies are ranked here by CR Score, from ten published factors. 63 are open 24/7, 88 open Saturdays and 71 open Sundays, based on posted hours. The median Google rating is 4.9★ across 105 rated businesses.
Top 10 septic service companies in Montclair at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Option One Plumbing | 60 | 4.8★ (3,017) | Rancho Cucamonga, 7 mi away | 24/7 | Overall |
| 2 | Quality Pumping Services Inc. | 59 | 5.0★ (11) | Ontario, 2 mi away | 24/7 | Emergencies |
| 3 | Scott McLeod Plumbing, Inc. | 59 | 4.9★ (756) | Rancho Cucamonga, 4 mi away | 24/7 | — |
| 4 | Urgent Septic Solutions | 59 | 5.0★ (80) | Los Angeles, 16 mi away | 24/7 | — |
| 5 | Countywide Septic Pumping LLC | 58 | 4.5★ (120) | Jurupa Valley, 11 mi away | 24/7 | — |
| 6 | Aaa septic pumping | 58 | 4.6★ (45) | Fontana, 12 mi away | 24/7 | — |
| 7 | EZ Sewers Rooter and Plumbing | 57 | 5.0★ (130) | Avocado Heights, 10 mi away | 24/7 | — |
| 8 | Reliable Septic | 57 | 5.0★ (9) | Anaheim, 8 mi away | 24/7 | — |
| 9 | Bobby Blue Plumbing Rancho Cucamonga | 57 | 4.9★ (354) | Rancho Cucamonga, 7 mi away | 24/7 | — |
| 10 | SWE Sewer Solutions Construction & Engineering | 57 | 4.9★ (120) | Glendora, 11 mi away | 24/7 | — |
The 105 best septic service companies in Montclair, 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 Ontario, 2 mi away
59/100CR ScoreRanked #2 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, 4 mi away
59/100CR ScoreRanked #3 because of its Google rating and review volume: 4.9★ from 756 Google reviews.
Based in Los Angeles, 16 mi away
59/100CR ScoreRanked #4 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, 11 mi away
58/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.5★ from 120 Google reviews, listed on Google as “Septic system service”.
Based in Fontana, 12 mi away
58/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.6★ from 45 Google reviews, listed on Google as “Septic system service”.
Based in Avocado Heights, 10 mi away
57/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 130 Google reviews, listed on Google as “Plumber”.
Based in Anaheim, 8 mi away
57/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Septic system service”.
Based in Rancho Cucamonga, 7 mi away
57/100CR ScoreRanked #9 because of its Google rating and review volume: 4.9★ from 354 Google reviews.
Based in Glendora, 11 mi away
57/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 120 Google reviews, listed on Google as “Plumber”.
Based in Rancho Cucamonga, 7 mi away
57/100CR ScoreRanked #11 because of its Google rating and review volume: 5.0★ from 219 Google reviews.
Based in Upland, 3 mi away
56/100CR ScoreRanked #12 because of its Google rating and review volume: 4.9★ from 147 Google reviews.
Based in Monrovia, 20 mi away
56/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “Septic system service”.
Based in Hacienda Heights, 17 mi away
56/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 200 Google reviews, listed on Google as “Plumber”.
Based in Pomona, 4 mi away
56/100CR ScoreRanked #15 because of its Google rating and review volume: 4.9★ from 131 Google reviews.
Based in Arcadia, 20 mi away
56/100CR ScoreRanked #16 because of its Google rating and review volume: 4.9★ from 1,562 Google reviews.
Based in Anaheim, 19 mi away
56/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 205 Google reviews, listed on Google as “Plumber”.
Based in Fontana, 13 mi away
56/100CR ScoreRanked #18 because of its Google rating and review volume: 4.8★ from 588 Google reviews.
Based in Rancho Cucamonga, 6 mi away
55/100CR ScoreRanked #19 because of its Google rating and review volume: 4.7★ from 220 Google reviews.
Based in Bloomington, 16 mi away
55/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Septic system service”.
Based in La Verne, 6 mi away
55/100CR ScoreRanked #21 because of its Google rating and review volume: 4.8★ from 132 Google reviews.
Based in Azusa, 17 mi away
55/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 93 Google reviews, listed on Google as “Plumber”.
Based in Colton, 21 mi away
55/100CR ScoreRanked #23 because of its Google rating and review volume: 4.8★ from 1,351 Google reviews.
Based in Whittier, 21 mi away
55/100CR ScoreRanked #24 because of its Google rating and review volume: 4.8★ from 295 Google reviews.
Based in Glendora, 11 mi away
55/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.8★ from 51 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 105 ranked septic service companies here; the rest are on their profiles.
Also serving Montclair
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 |
| Carlos Sewer Services | 7 mi | |
| DP Plumbing & Sewer INC | 5 mi | |
| Eazy Plumbing and Rooter Sewer inspections | 8 mi | |
| Frank's Pumping | 1.0★ (1) | 23 mi |
| GLPS Plumbing & Mechanical Srvs. | 5.0★ (1) | 18 mi |
| Liz Septic | 5.0★ (2) | 6 mi |
| Mg plumbing and septic repair Llc | 5.0★ (2) | 18 mi |
| Nazco Geotechnical Engineering | 4.0★ (1) | 25 mi |
| Penny Plumbing | 5 mi | |
| Plumbing Method | Emergency Plumbers Chino | 8 mi | |
| Quality Pumping Services inc. | 5.0★ (2) | 16 mi |
| Renowned Plumbing & Rooter | 2 mi | |
| S.S. Construction and Pumping | 6 mi | |
| Sewer King | 5.0★ (1) | 22 mi |
| Socal Sewer Plumbing Contractor INC | 3 mi | |
| Tony's Rooter Service Sewer and Drain Paramedics | 5.0★ (1) | 16 mi |
| United Site Services | 5.0★ (1) | 14 mi |
| West Coast Environmental Services Inc. | 2 mi | |
| White House Septic Tank Pumping | 7 mi |
How we ranked Montclair septic service companies
We scored 105 Montclair 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 Montclair 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 Montclair: frequently asked questions
Who is the best septic service company in Montclair?
By CR Score, the highest-ranked septic service company in Montclair, CA is Option One Plumbing with a CR Score of 60/100. It has 4.8★ from 3,017 Google reviews. It is open 24/7. Quality Pumping Services Inc. (#2) and Scott McLeod Plumbing, Inc. (#3) follow. We ranked 105 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Montclair?
ContractorsRanked ranks 105 septic service companies serving Montclair, CA. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Montclair are open 24/7?
63 ranked septic service companies in Montclair post 24/7 hours. The highest-ranked are Option One Plumbing (#1), Quality Pumping Services Inc. (#2) and Scott McLeod Plumbing, Inc. (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Montclair work on weekends?
88 of 105 ranked septic service companies post Saturday hours and 71 post Sunday hours. The highest-ranked open Saturdays are Option One Plumbing (#1), Quality Pumping Services Inc. (#2) and Scott McLeod Plumbing, Inc. (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Montclair septic service companies have?
The median Google rating among 105 rated septic service companies in Montclair is 4.9★, with a median of 45 reviews. Option One Plumbing has the most, 3,017 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 Montclair count in this ranking?
Yes, if they are within 25 mi of the Montclair 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 Montclair
- November 2026: CR Scores recalculated for 105 septic service companies serving Montclair.
More septic service companies and Montclair pages
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