58/100CR Score
Ranked #1 because of its Google rating and review volume: 4.9★ from 443 Google reviews, the most in Brentwood.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Septic Service Companies in Brentwood, CA (2026)
18 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Brentwood: JC SEWER & DRAIN PLUMBING LIC#845004, CR Score 58/100; 4.9★ from 443 Google reviews; open 7 days a week.
- 4
Best for emergencies (open 24/7): JNJ Rooter and Plumbing LLC, posts 24/7 hours; ranked #4 of 18.
- 2
Most-reviewed: Precision Plumbing & Contracting, 396 Google reviews at 4.8★, the most of 18 ranked after JC SEWER & DRAIN PLUMBING LIC#845004; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
18 Brentwood septic service companies are ranked here by CR Score, from ten published factors. 8 are open 24/7, 12 open Saturdays and 9 open Sundays, based on posted hours. The median Google rating is 4.7★ across 18 rated businesses.
Top 10 septic service companies in Brentwood at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | JC SEWER & DRAIN PLUMBING LIC#845004 | 58 | 4.9★ (443) | Stockton, 21 mi away | Sat · Sun | Overall |
| 2 | Precision Plumbing & Contracting | 56 | 4.8★ (396) | Brentwood | — | Most reviews |
| 3 | Williams Sanitary Service Inc | 56 | 4.7★ (28) | Discovery Bay, 12 mi away | — | — |
| 4 | JNJ Rooter and Plumbing LLC | 56 | 5.0★ (261) | Alamo, 16 mi away | 24/7 | Emergencies |
| 5 | Mr. Rooter Plumbing of The Tri-Valley | 55 | 4.8★ (271) | San Ramon, 19 mi away | 24/7 | — |
| 6 | River Rats Septic Services | 55 | 4.5★ (15) | Rio Vista, 21 mi away | 24/7 | — |
| 7 | Parrish & Sons Inc | 54 | 4.3★ (23) | Stockton, 25 mi away | 24/7 | — |
| 8 | United Site Services | 53 | 4.2★ (5) | Antioch, 7 mi away | Sat · Evenings | — |
| 9 | French Camp Septic Service | 53 | 5.0★ (7) | Stockton, 24 mi away | 24/7 | — |
| 10 | American Plumbing | 52 | 3.9★ (60) | Antioch, 9 mi away | 24/7 | — |
The 18 best septic service companies in Brentwood, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Brentwood
56/100CR ScoreRanked #2 because of its Google rating and review volume: 4.8★ from 396 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Discovery Bay, 12 mi away
56/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.7★ from 28 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Alamo, 16 mi away
56/100CR ScoreRanked #4 because of its Google rating and review volume: 5.0★ from 261 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Ramon, 19 mi away
55/100CR ScoreRanked #5 because of its Google rating and review volume: 4.8★ from 271 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rio Vista, 21 mi away
55/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.5★ from 15 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Stockton, 25 mi away
54/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.3★ from 23 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Antioch, 7 mi away
53/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Stockton, 24 mi away
53/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Antioch, 9 mi away
52/100CR ScoreRanked #10 because of its Google rating and review volume: 3.9★ from 60 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Stockton, 24 mi away
51/100CR ScoreRanked #11 because of its Google rating and review volume: 4.5★ from 111 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Livermore, 16 mi away
51/100CR ScoreRanked #12 because of its Google rating and review volume: 4.7★ from 23 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Livermore, 18 mi away
50/100CR ScoreRanked #13 because of its Google rating and trade focus: 2.5★ from 8 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#14 AAA Septic Inc.
Based in Manteca, 24 mi away
48/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.7★ from 28 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Lodi, 24 mi away
48/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Martinez, 21 mi away
45/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.4★ from 14 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Martinez, 23 mi away
44/100CR ScoreRanked #17 because of its Google rating and trade focus: 2.9★ from 34 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Walnut Creek, 20 mi away
44/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Also serving Brentwood
12 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 |
|---|---|---|
| A-1 Rapid Rooter | 20 mi | |
| Antioch Sewer Services | 9 mi | |
| AQUA PRO PLUMBING CONTRACTOR / TRENCHLESS SEWER LINE REPAIR / SLAB LEAK LOCATORS / GAS LINE | 3.0★ (2) | 24 mi |
| Bay Area Restaurant Services LLC | 20 mi | |
| Discovery Bay Sewer Services | 6 mi | |
| Evenflow sewer repair - Concord | 19 mi | |
| Fuller Septic Services | 23 mi | |
| J & G Trap Services | 5.0★ (1) | 12 mi |
| Morton Septic Backhoe & Drilling | 22 mi | |
| Mr. Rooter Plumbing of San Joaquin County | 24 mi | |
| RUFF PLUMBING | 5.0★ (2) | 21 mi |
| Zuniga construction and septics llc | 19 mi |
How we ranked Brentwood septic service companies
We scored 18 Brentwood 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 2, 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 Brentwood 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 Brentwood: frequently asked questions
Who is the best septic service company in Brentwood?
By CR Score, the highest-ranked septic service company in Brentwood, CA is JC SEWER & DRAIN PLUMBING LIC#845004 with a CR Score of 58/100. It has 4.9★ from 443 Google reviews. It is open 7 days a week. Precision Plumbing & Contracting (#2) and Williams Sanitary Service Inc (#3) follow. We ranked 18 septic service companies on ten factors, last updated November 2, 2026.
How many septic service companies are there in Brentwood?
ContractorsRanked ranks 18 septic service companies serving Brentwood, CA. 1 of them is based in Brentwood; the rest serve it from nearby towns. Another 12 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Brentwood are open 24/7?
8 ranked septic service companies in Brentwood post 24/7 hours. The highest-ranked are JNJ Rooter and Plumbing LLC (#4), Mr. Rooter Plumbing of The Tri-Valley (#5) and River Rats Septic Services (#6). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Brentwood work on weekends?
12 of 18 ranked septic service companies post Saturday hours and 9 post Sunday hours. The highest-ranked open Saturdays are JC SEWER & DRAIN PLUMBING LIC#845004 (#1), JNJ Rooter and Plumbing LLC (#4) and Mr. Rooter Plumbing of The Tri-Valley (#5). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Brentwood septic service companies have?
The median Google rating among 18 rated septic service companies in Brentwood is 4.7★, with a median of 26 reviews. JC SEWER & DRAIN PLUMBING LIC#845004 has the most, 443 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 Brentwood count in this ranking?
Yes, if they are within 25 mi of the Brentwood 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 Brentwood
- November 2026: CR Scores recalculated for 18 septic service companies serving Brentwood.
More septic service companies and Brentwood pages
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