57/100CR Score
Ranked #1 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.
Best Septic Service Companies in Piedmont, CA (2026)
56 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Piedmont: Hydroworks Plumbing, CR Score 57/100; 5.0★ from 27 Google reviews; open 24/7.
- 5
Best for emergencies (open 24/7): A-1 Septic Tank Service Inc, posts 24/7 hours; ranked #5 of 56.
- 4
Most-reviewed: Caccia Home Services, 1,910 Google reviews at 4.9★, the most of 56 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
56 Piedmont septic service companies are ranked here by CR Score, from ten published factors. 31 are open 24/7, 41 open Saturdays and 34 open Sundays, based on posted hours. The median Google rating is 4.8★ across 56 rated businesses.
Top 10 septic service companies in Piedmont at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Hydroworks Plumbing | 57 | 5.0★ (27) | Hayward, 15 mi away | 24/7 | Overall |
| 2 | Ace Plumbing & Rooter, Inc. | 57 | 4.9★ (931) | San Francisco, 10 mi away | Sat · Sun · Evenings | — |
| 3 | El Sobrante Sewer Repair | 56 | 5.0★ (118) | El Sobrante, 10 mi away | Sat · Sun · Evenings | — |
| 4 | Caccia Home Services | 56 | 4.9★ (1,910) | Burlingame, 17 mi away | Sat · Sun · Evenings | Most reviews |
| 5 | A-1 Septic Tank Service Inc | 56 | 4.4★ (34) | Hayward, 17 mi away | 24/7 | Emergencies |
| 6 | All Hayward Plumbing, Drain & Sewer Co. | 55 | 5.0★ (43) | Hayward, 13 mi away | 24/7 | — |
| 7 | Wizard Plumbing and Drain | 55 | 4.8★ (1,648) | San Mateo, 20 mi away | Sat · Sun · Evenings | — |
| 8 | Michael Gardner Plumbing | 54 | 5.0★ (94) | San Lorenzo, 12 mi away | 24/7 | — |
| 9 | JNJ Rooter and Plumbing LLC | 54 | 5.0★ (261) | Alamo, 15 mi away | 24/7 | — |
| 10 | Isackson Plumbing | 54 | 5.0★ (74) | San Francisco, 12 mi away | 24/7 | — |
The 56 best septic service companies in Piedmont, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in San Francisco, 10 mi away
57/100CR ScoreRanked #2 because of its Google rating and review volume: 4.9★ from 931 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in El Sobrante, 10 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 Burlingame, 17 mi away
56/100CR ScoreRanked #4 because of its Google rating and review volume: 4.9★ from 1,910 Google reviews, the most in Piedmont.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hayward, 17 mi away
56/100CR ScoreRanked #5 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 Hayward, 13 mi away
55/100CR ScoreRanked #6 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 San Mateo, 20 mi away
55/100CR ScoreRanked #7 because of its Google rating and review volume: 4.8★ from 1,648 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Lorenzo, 12 mi away
54/100CR ScoreRanked #8 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 Alamo, 15 mi away
54/100CR ScoreRanked #9 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 Francisco, 12 mi away
54/100CR ScoreRanked #10 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 San Ramon, 17 mi away
54/100CR ScoreRanked #11 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 Richmond, 9 mi away
54/100CR 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, 9 mi away
53/100CR 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 Hayward, 14 mi away
53/100CR ScoreRanked #14 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 San Mateo, 19 mi away
53/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Oakland, 5 mi away
53/100CR 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 Francisco, 12 mi away
52/100CR ScoreRanked #17 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.
Based in South San Francisco, 15 mi away
52/100CR ScoreRanked #18 because of its Google rating and review volume: 4.6★ from 119 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Leandro, 7 mi away
52/100CR 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 Daly City, 13 mi away
52/100CR ScoreRanked #20 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 San Rafael, 18 mi away
52/100CR ScoreRanked #21 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 Discovery Bay, 24 mi away
52/100CR ScoreRanked #22 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 Dublin, 19 mi away
51/100CR ScoreRanked #23 because of its Google rating and review volume: 4.9★ from 62 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hayward, 14 mi away
51/100CR ScoreRanked #24 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 Alameda, 15 mi away
51/100CR ScoreRanked #25 because of its Google rating and availability: 4.8★ from 36 Google reviews, open 24/7.
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 56 ranked septic service companies here; the rest are on their profiles.
Also serving Piedmont
17 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 | 11 mi | |
| American Eagle Plumbing & Construction | 5.0★ (1) | 10 mi |
| Bay Area Restaurant Services LLC | 11 mi | |
| Carlos' Petaluma Septic Services | 22 mi | |
| Castro Valley's H & R Plumbing - Plumbing Sewer Repair and Installation, Drain Cleaner | 15 mi | |
| Ernie's Plumbing & Sewer Services | 11 mi | |
| Evenflow sewer repair - Concord | 15 mi | |
| North Bay Septic Services | 5.0★ (1) | 18 mi |
| Quick Fix Septic | 12 mi | |
| Rooterman Drain & Sewer Service | 5.0★ (2) | 19 mi |
| SDR Plumbing And Sewer | 5.0★ (1) | 21 mi |
| Septic Services in Oakland | 3 mi | |
| Sequoia Septic Tank Services | 18 mi | |
| Sewer & Drain Masters | 11 mi | |
| Sewer Master | 21 mi | |
| Sewer Rat Plumbing | 18 mi | |
| Sewerinspections | 13 mi |
How we ranked Piedmont septic service companies
We scored 56 Piedmont 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 Piedmont 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 Piedmont: frequently asked questions
Who is the best septic service company in Piedmont?
By CR Score, the highest-ranked septic service company in Piedmont, CA is Hydroworks Plumbing with a CR Score of 57/100. It has 5.0★ from 27 Google reviews. It is open 24/7. Ace Plumbing & Rooter, Inc. (#2) and El Sobrante Sewer Repair (#3) follow. We ranked 56 septic service companies on ten factors, last updated November 2, 2026.
How many septic service companies are there in Piedmont?
ContractorsRanked ranks 56 septic service companies serving Piedmont, CA. Another 17 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Piedmont are open 24/7?
31 ranked septic service companies in Piedmont post 24/7 hours. The highest-ranked are Hydroworks Plumbing (#1), A-1 Septic Tank Service Inc (#5) and All Hayward Plumbing, Drain & Sewer Co. (#6). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Piedmont work on weekends?
41 of 56 ranked septic service companies post Saturday hours and 34 post Sunday hours. The highest-ranked open Saturdays are Hydroworks Plumbing (#1), Ace Plumbing & Rooter, Inc. (#2) and El Sobrante Sewer Repair (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Piedmont septic service companies have?
The median Google rating among 56 rated septic service companies in Piedmont is 4.8★, with a median of 31 reviews. Caccia Home Services has the most, 1,910 reviews, and ranks #4. 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 Piedmont count in this ranking?
Yes, if they are within 25 mi of the Piedmont 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 Piedmont
- November 2026: CR Scores recalculated for 56 septic service companies serving Piedmont.
More septic service companies and Piedmont pages
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