61/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 3,017 Google reviews, the most in Rancho Cucamonga.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Septic Service Companies in Rancho Cucamonga, CA (2026)
108 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Rancho Cucamonga: Option One Plumbing, CR Score 61/100; 4.8★ from 3,017 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Scott McLeod Plumbing, Inc., posts 24/7 hours; ranked #2 of 108.
- 27
Most-reviewed: Western Rooter & Plumbing, 1,562 Google reviews at 4.9★, the most of 108 ranked after Option One Plumbing; ranked #27.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
108 Rancho Cucamonga septic service companies are ranked here by CR Score, from ten published factors. 61 are open 24/7, 88 open Saturdays and 70 open Sundays, based on posted hours. The median Google rating is 4.9★ across 108 rated businesses.
Top 10 septic service companies in Rancho Cucamonga at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Option One Plumbing | 61 | 4.8★ (3,017) | Rancho Cucamonga | 24/7 | Overall |
| 2 | Scott McLeod Plumbing, Inc. | 60 | 4.9★ (756) | Rancho Cucamonga | 24/7 | Emergencies |
| 3 | Urgent Septic Solutions | 59 | 5.0★ (80) | Los Angeles, 13 mi away | 24/7 | — |
| 4 | Countywide Septic Pumping LLC | 59 | 4.5★ (120) | Jurupa Valley, 9 mi away | 24/7 | — |
| 5 | Aaa septic pumping | 59 | 4.6★ (45) | Fontana, 6 mi away | 24/7 | — |
| 6 | Bobby Blue Plumbing Rancho Cucamonga | 59 | 4.9★ (354) | Rancho Cucamonga | 24/7 | — |
| 7 | Utility Plumbing Services | 58 | 5.0★ (219) | Rancho Cucamonga | 24/7 | — |
| 8 | Quality Pumping Services Inc. | 58 | 5.0★ (11) | Ontario, 5 mi away | 24/7 | — |
| 9 | Mr. Rooter Plumbing of The Inland Empire | 57 | 4.8★ (588) | Fontana, 7 mi away | 24/7 | — |
| 10 | Allstar Plumbing, Heating & Air | 57 | 4.7★ (220) | Rancho Cucamonga | 24/7 | — |
The 108 best septic service companies in Rancho Cucamonga, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Rancho Cucamonga
60/100CR ScoreRanked #2 because of its Google rating and review volume: 4.9★ from 756 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Los Angeles, 13 mi away
59/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 80 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Jurupa Valley, 9 mi away
59/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.5★ from 120 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fontana, 6 mi away
59/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.6★ from 45 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rancho Cucamonga
59/100CR ScoreRanked #6 because of its Google rating and review volume: 4.9★ from 354 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rancho Cucamonga
58/100CR ScoreRanked #7 because of its Google rating and review volume: 5.0★ from 219 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ontario, 5 mi away
58/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fontana, 7 mi away
57/100CR ScoreRanked #9 because of its Google rating and review volume: 4.8★ from 588 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rancho Cucamonga
57/100CR ScoreRanked #10 because of its Google rating and review volume: 4.7★ from 220 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bloomington, 11 mi away
56/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Riverside, 23 mi away
56/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 72 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Colton, 15 mi away
56/100CR ScoreRanked #13 because of its Google rating and review volume: 4.8★ from 1,351 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Bernardino, 17 mi away
56/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fontana, 6 mi away
56/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.2★ from 40 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Avocado Heights, 16 mi away
56/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 130 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#17 Reliable Septic
Based in Anaheim, 12 mi away
56/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Upland, 5 mi away
56/100CR ScoreRanked #18 because of its Google rating and review volume: 4.9★ from 147 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Glendora, 16 mi away
55/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 120 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Los Angeles, 16 mi away
55/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Riverside, 12 mi away
55/100CR ScoreRanked #21 because of its Google rating and review volume: 4.8★ from 433 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Bernardino, 18 mi away
55/100CR ScoreRanked #22 because of its Google rating and review volume: 4.8★ from 881 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Monrovia, 25 mi away
55/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#24 Mr Rooter
Based in Rancho Cucamonga
55/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Azusa, 18 mi away
55/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 93 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
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 108 ranked septic service companies here; the rest are on their profiles.
Also serving Rancho Cucamonga
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 |
|---|---|---|
| Backflow Parts USA | 4.8★ (10) | In Rancho Cucamonga |
| Carlos Sewer Services | 11 mi | |
| DP Plumbing & Sewer INC | 9 mi | |
| Frank's Pumping | 1.0★ (1) | 21 mi |
| GLPS Plumbing & Mechanical Srvs. | 5.0★ (1) | 24 mi |
| Liz Septic | 5.0★ (2) | 6 mi |
| Mg plumbing and septic repair Llc | 5.0★ (2) | 13 mi |
| Nazco Geotechnical Engineering | 4.0★ (1) | 19 mi |
| Neighborhood Pumping | 8 mi | |
| Penny Plumbing | 3 mi | |
| Plumbing Method | Emergency Plumbers Chino | 11 mi | |
| Quality Pumping Services inc. | 5.0★ (2) | 15 mi |
| Renowned Plumbing & Rooter | 5 mi | |
| S.S. Construction and Pumping | 5 mi | |
| Socal Sewer Plumbing Contractor INC | 4 mi | |
| Tony's Rooter Service Sewer and Drain Paramedics | 5.0★ (1) | 22 mi |
| United Site Services | 5.0★ (1) | 20 mi |
| United Site Services | 10 mi | |
| West Coast Environmental Services Inc. | 5 mi | |
| White House Septic Tank Pumping | 5 mi |
How we ranked Rancho Cucamonga septic service companies
We scored 108 Rancho Cucamonga 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 Rancho Cucamonga 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 Rancho Cucamonga: frequently asked questions
Who is the best septic service company in Rancho Cucamonga?
By CR Score, the highest-ranked septic service company in Rancho Cucamonga, CA is Option One Plumbing with a CR Score of 61/100. It has 4.8★ from 3,017 Google reviews. It is open 24/7. Scott McLeod Plumbing, Inc. (#2) and Urgent Septic Solutions (#3) follow. We ranked 108 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Rancho Cucamonga?
ContractorsRanked ranks 108 septic service companies serving Rancho Cucamonga, CA. 8 of them are based in Rancho Cucamonga; 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 Rancho Cucamonga are open 24/7?
61 ranked septic service companies in Rancho Cucamonga post 24/7 hours. The highest-ranked are Option One Plumbing (#1), Scott McLeod Plumbing, Inc. (#2) and Urgent Septic Solutions (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Rancho Cucamonga work on weekends?
88 of 108 ranked septic service companies post Saturday hours and 70 post Sunday hours. The highest-ranked open Saturdays are Option One Plumbing (#1), Scott McLeod Plumbing, Inc. (#2) and Urgent Septic Solutions (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Rancho Cucamonga septic service companies have?
The median Google rating among 108 rated septic service companies in Rancho Cucamonga is 4.9★, with a median of 39 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 Rancho Cucamonga count in this ranking?
Yes, if they are within 25 mi of the Rancho Cucamonga 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 Rancho Cucamonga
- November 2026: CR Scores recalculated for 108 septic service companies serving Rancho Cucamonga.
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