57/100CR Score
Ranked #1 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.
Best Septic Service Companies in Walnut Creek, CA (2026)
44 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Walnut Creek: JNJ Rooter and Plumbing LLC, CR Score 57/100; 5.0★ from 261 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Hydroworks Plumbing, posts 24/7 hours; ranked #2 of 44.
- 6
Most-reviewed: Ace Plumbing & Rooter, Inc., 931 Google reviews at 4.9★, the most of 44 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
44 Walnut Creek septic service companies are ranked here by CR Score, from ten published factors. 21 are open 24/7, 28 open Saturdays and 22 open Sundays, based on posted hours. The median Google rating is 4.8★ across 44 rated businesses.
Most of this list also appears on the Septic service companies in Concord ranking. See Septic service companies in Concord
Top 10 septic service companies in Walnut Creek at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | JNJ Rooter and Plumbing LLC | 57 | 5.0★ (261) | Alamo, 4 mi away | 24/7 | Overall |
| 2 | Hydroworks Plumbing | 57 | 5.0★ (27) | Hayward, 20 mi away | 24/7 | Emergencies |
| 3 | El Sobrante Sewer Repair | 56 | 5.0★ (118) | El Sobrante, 12 mi away | Sat · Sun · Evenings | — |
| 4 | A-1 Septic Tank Service Inc | 56 | 4.4★ (34) | Hayward, 20 mi away | 24/7 | — |
| 5 | Mr. Rooter Plumbing of The Tri-Valley | 56 | 4.8★ (271) | San Ramon, 14 mi away | 24/7 | — |
| 6 | Ace Plumbing & Rooter, Inc. | 55 | 4.9★ (931) | San Francisco, 21 mi away | Sat · Sun · Evenings | Most reviews |
| 7 | All Hayward Plumbing, Drain & Sewer Co. | 54 | 5.0★ (43) | Hayward, 18 mi away | 24/7 | — |
| 8 | Williams Sanitary Service Inc | 54 | 4.7★ (28) | Discovery Bay, 17 mi away | — | — |
| 9 | Michael Gardner Plumbing | 54 | 5.0★ (94) | San Lorenzo, 17 mi away | 24/7 | — |
| 10 | Mr. Rooter Plumbing of Contra Costa County | 54 | 4.8★ (265) | Fairfield, 21 mi away | 24/7 | — |
The 44 best septic service companies in Walnut Creek, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Hayward, 20 mi away
57/100CR ScoreRanked #2 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 El Sobrante, 12 mi away
56/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 118 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hayward, 20 mi away
56/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.4★ from 34 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Ramon, 14 mi away
56/100CR 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 San Francisco, 21 mi away
55/100CR ScoreRanked #6 because of its Google rating and review volume: 4.9★ from 931 Google reviews, the most in Walnut Creek.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hayward, 18 mi away
54/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 43 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Discovery Bay, 17 mi away
54/100CR ScoreRanked #8 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 San Lorenzo, 17 mi away
54/100CR ScoreRanked #9 because of its Google rating and review volume: 5.0★ from 94 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 21 mi away
54/100CR ScoreRanked #10 because of its Google rating and review volume: 4.8★ from 265 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hayward, 16 mi away
53/100CR ScoreRanked #11 because of its Google rating and review volume: 4.8★ from 98 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Richmond, 15 mi away
53/100CR ScoreRanked #12 because of its Google rating and review volume: 4.9★ from 59 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Alamo, 15 mi away
52/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.2★ from 24 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Benicia, 22 mi away
52/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.4★ from 59 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Francisco, 22 mi away
52/100CR ScoreRanked #15 because of its Google rating and review volume: 5.0★ from 74 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Oakland, 13 mi away
51/100CR ScoreRanked #16 because of its Google rating and trade focus: 3.1★ 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 San Rafael, 25 mi away
51/100CR ScoreRanked #17 because of its Google rating and review volume: 5.0★ from 236 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vallejo, 18 mi away
51/100CR ScoreRanked #18 because of its Google rating and review volume: 4.5★ from 57 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Leandro, 14 mi away
51/100CR ScoreRanked #19 because of its Google rating and availability: 4.8★ from 17 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Antioch, 18 mi away
50/100CR ScoreRanked #20 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 Hayward, 19 mi away
50/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ 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 Daly City, 24 mi away
50/100CR ScoreRanked #22 because of its Google rating and review volume: 5.0★ from 486 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Livermore, 18 mi away
50/100CR ScoreRanked #23 because of its Google rating and availability: 4.7★ from 23 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hayward, 16 mi away
50/100CR ScoreRanked #24 because of its Google rating and review volume: 4.3★ from 31 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Francisco, 23 mi away
50/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
How we ranked Walnut Creek septic service companies
We scored 44 Walnut Creek 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 Walnut Creek 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 Walnut Creek: frequently asked questions
Who is the best septic service company in Walnut Creek?
By CR Score, the highest-ranked septic service company in Walnut Creek, CA is JNJ Rooter and Plumbing LLC with a CR Score of 57/100. It has 5.0★ from 261 Google reviews. It is open 24/7. Hydroworks Plumbing (#2) and El Sobrante Sewer Repair (#3) follow. We ranked 44 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Walnut Creek?
ContractorsRanked ranks 44 septic service companies serving Walnut Creek, CA. Counts are as of November 2026.
Which septic service companies in Walnut Creek are open 24/7?
21 ranked septic service companies in Walnut Creek post 24/7 hours. The highest-ranked are JNJ Rooter and Plumbing LLC (#1), Hydroworks Plumbing (#2) and A-1 Septic Tank Service Inc (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Walnut Creek work on weekends?
28 of 44 ranked septic service companies post Saturday hours and 22 post Sunday hours. The highest-ranked open Saturdays are JNJ Rooter and Plumbing LLC (#1), Hydroworks Plumbing (#2) and El Sobrante Sewer Repair (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Walnut Creek septic service companies have?
The median Google rating among 44 rated septic service companies in Walnut Creek is 4.8★, with a median of 31 reviews. Ace Plumbing & Rooter, Inc. has the most, 931 reviews, and ranks #6. 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 Walnut Creek count in this ranking?
Yes, if they are within 25 mi of the Walnut Creek 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 Walnut Creek
- November 2026: CR Scores recalculated for 44 septic service companies serving Walnut Creek.
More septic service companies and Walnut Creek pages
Septic service companies near Walnut Creek
- Septic service companies in Pleasant Hill, CA42 ranked
- Septic service companies in Lafayette, CA53 ranked
- Septic service companies in Alamo, CA41 ranked
- Septic service companies in Concord, CA38 ranked
- Septic service companies in Moraga, CA54 ranked
- Septic service companies in Orinda, CA57 ranked
- Septic service companies in Danville, CA43 ranked
- Septic service companies in Clayton, CA37 ranked
- Septic service companies in Martinez, CA46 ranked
- Septic service companies in San Ramon, CA45 ranked
Other trades in Walnut Creek
- Roofers in Walnut Creek749 ranked
- Plumbers in Walnut Creek643 ranked
- Electricians in Walnut Creek427 ranked
- HVAC contractors in Walnut Creek544 ranked
- General contractors in Walnut Creek921 ranked
- Painters in Walnut Creek227 ranked
- Landscapers in Walnut Creek190 ranked
- Handymen in Walnut Creek112 ranked
- Kitchen remodelers in Walnut Creek459 ranked
- Bathroom remodelers in Walnut Creek434 ranked
- Flooring contractors in Walnut Creek319 ranked
- Tile installers in Walnut Creek71 ranked
- Drywall contractors in Walnut Creek30 ranked
- Concrete contractors in Walnut Creek286 ranked
- Fence contractors in Walnut Creek122 ranked
- Deck builders in Walnut Creek141 ranked
- Siding contractors in Walnut Creek102 ranked
- Window installers in Walnut Creek324 ranked
- Gutter installers in Walnut Creek190 ranked
- Insulation contractors in Walnut Creek102 ranked
- Solar installers in Walnut Creek321 ranked
- Garage door repair companies in Walnut Creek205 ranked
- Foundation repair companies in Walnut Creek121 ranked
- Tree services in Walnut Creek236 ranked
- Masonry contractors in Walnut Creek125 ranked
- Water damage restoration companies in Walnut Creek387 ranked
- Home builders in Walnut Creek485 ranked
- Demolition contractors in Walnut Creek97 ranked
- Window cleaners in Walnut Creek102 ranked
- Pressure washing companies in Walnut Creek89 ranked
- Pest control companies in Walnut Creek211 ranked
- Paving contractors in Walnut Creek161 ranked
- Auto glass repair shops in Walnut Creek310 ranked
- Excavating contractors in Walnut Creek82 ranked
- Pool builders in Walnut Creek212 ranked
- All contractors in Walnut Creek