63/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 104 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Septic Service Companies in Rohnert Park, CA (2026)
48 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Rohnert Park: Brian's Septic Service, CR Score 63/100; 5.0★ from 104 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): AllStarz Pumping & Engineering, posts 24/7 hours; ranked #2 of 48.
- 3
Most-reviewed: Mr. Rooter Plumbing of Sonoma County, 923 Google reviews at 4.9★, the most of 48 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
48 Rohnert Park septic service companies are ranked here by CR Score, from ten published factors. 22 are open 24/7, 35 open Saturdays and 25 open Sundays, based on posted hours. The median Google rating is 5.0★ across 48 rated businesses.
Top 10 septic service companies in Rohnert Park at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Brian's Septic Service | 63 | 5.0★ (104) | Santa Rosa, 8 mi away | 24/7 | Overall |
| 2 | AllStarz Pumping & Engineering | 62 | 4.7★ (127) | Santa Rosa, 7 mi away | 24/7 | Emergencies |
| 3 | Mr. Rooter Plumbing of Sonoma County | 60 | 4.9★ (923) | Santa Rosa, 7 mi away | 24/7 | Most reviews |
| 4 | Redwood Sewer & Drain Services | 60 | 5.0★ (163) | Larkfield-Wikiup, 7 mi away | 24/7 | — |
| 5 | Bob's underground septic | 59 | 5.0★ (14) | Santa Rosa, 5 mi away | 24/7 | — |
| 6 | Superior Septic Pumping Service | 58 | 4.8★ (21) | Santa Rosa, 6 mi away | Sat · Sun · Evenings | — |
| 7 | North Bay Restroom Co. | 58 | 5.0★ (24) | Windsor, 16 mi away | 24/7 | — |
| 8 | Northen Sewer & Drain | 57 | 5.0★ (13) | Santa Rosa, 13 mi away | 24/7 | — |
| 9 | Just-in Time Septic Pumping | 57 | 5.0★ (103) | Santa Rosa, 9 mi away | Sat · Sun · Evenings | — |
| 10 | Joe's Farmer Septic & Grease Service, INC | 57 | 4.2★ (5) | Santa Rosa, 7 mi away | 24/7 | — |
The 48 best septic service companies in Rohnert Park, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Santa Rosa, 7 mi away
62/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.7★ from 127 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 7 mi away
60/100CR ScoreRanked #3 because of its Google rating and review volume: 4.9★ from 923 Google reviews, the most in Rohnert Park.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Larkfield-Wikiup, 7 mi away
60/100CR ScoreRanked #4 because of its Google rating and review volume: 5.0★ from 163 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 5 mi away
59/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 6 mi away
58/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ 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 Windsor, 16 mi away
58/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 13 mi away
57/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 9 mi away
57/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 103 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 7 mi away
57/100CR ScoreRanked #10 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 Larkfield-Wikiup, 12 mi away
56/100CR ScoreRanked #11 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 Santa Rosa, 5 mi away
56/100CR ScoreRanked #12 because of its Google rating and review volume: 4.9★ from 90 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Napa, 23 mi away
56/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 361 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sebastopol, 10 mi away
56/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 9 mi away
55/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 8 mi away
55/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 10 mi away
55/100CR ScoreRanked #17 because of its Google rating and review volume: 5.0★ from 281 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Petaluma, 6 mi away
54/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sonoma, 12 mi away
54/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 90 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#20 Sonoma Landworks
Based in Santa Rosa, 20 mi away
54/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 10 mi away
54/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Petaluma, 8 mi away
54/100CR ScoreRanked #22 because of its Google rating and trade focus: 3.5★ from 11 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Corte Madera, 13 mi away
53/100CR ScoreRanked #23 because of its Google rating and review volume: 5.0★ from 45 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
#24 Septic genial
Based in Santa Rosa, 5 mi away
53/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “General contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 9 mi away
53/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.4★ from 20 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
All 48 septic service companies
#1 to #25 are shown in full above. Here are #26 to #48, in CR Score order; each links to its profile.
Also serving Rohnert Park
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 |
|---|---|---|
| Accredited Septic | 8 mi | |
| Cascade Plumbing Solutions | 5.0★ (9) | In Rohnert Park |
| Drew Underground Construction Inc | 7 mi | |
| GAC Plumbing Company | 5.0★ (2) | 5 mi |
| GAC Plumbing Company (Rohnert Park) | In Rohnert Park | |
| Jaw Excavation | 5.0★ (1) | 10 mi |
| L.J. Construction | 12 mi | |
| Mike Treinen-Onsite Wastewater | 4 mi | |
| North Bay Septic | 5.0★ (2) | 18 mi |
| Northen Sewer & Drain | 5.0★ (1) | 1 mi |
| P&M Excavating, Inc. | 8 mi | |
| Rapid Rooter Sewer-Drain Cleaning | In Rohnert Park | |
| Roy's Sewer Services | 5.0★ (1) | 8 mi |
| Sanitary Solutions Corp | 5.0★ (1) | 16 mi |
| Sequoia Septic Tank Service | 5.0★ (1) | 3 mi |
| Sonoma County Septic | 14 mi | |
| Trinity Oaks Septic Services | 5.0★ (1) | 14 mi |
| Vineyard Septic | 5.0★ (1) | In Rohnert Park |
| Walker Septic Services | 12 mi | |
| West County Septic | 1 mi |
How we ranked Rohnert Park septic service companies
We scored 48 Rohnert Park 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 Rohnert Park 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 Rohnert Park: frequently asked questions
Who is the best septic service company in Rohnert Park?
By CR Score, the highest-ranked septic service company in Rohnert Park, CA is Brian's Septic Service with a CR Score of 63/100. It has 5.0★ from 104 Google reviews. It is open 24/7. AllStarz Pumping & Engineering (#2) and Mr. Rooter Plumbing of Sonoma County (#3) follow. We ranked 48 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Rohnert Park?
ContractorsRanked ranks 48 septic service companies serving Rohnert Park, CA. 1 of them is based in Rohnert Park; 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 Rohnert Park are open 24/7?
22 ranked septic service companies in Rohnert Park post 24/7 hours. The highest-ranked are Brian's Septic Service (#1), AllStarz Pumping & Engineering (#2) and Mr. Rooter Plumbing of Sonoma County (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Rohnert Park work on weekends?
35 of 48 ranked septic service companies post Saturday hours and 25 post Sunday hours. The highest-ranked open Saturdays are Brian's Septic Service (#1), AllStarz Pumping & Engineering (#2) and Mr. Rooter Plumbing of Sonoma County (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Rohnert Park septic service companies have?
The median Google rating among 48 rated septic service companies in Rohnert Park is 5.0★, with a median of 15 reviews. Mr. Rooter Plumbing of Sonoma County has the most, 923 reviews, and ranks #3. 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 Rohnert Park count in this ranking?
Yes, if they are within 25 mi of the Rohnert Park 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 Rohnert Park
- November 2026: CR Scores recalculated for 48 septic service companies serving Rohnert Park.
More septic service companies and Rohnert Park pages
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