60/100CR Score
Ranked #1 because of its Google rating and review volume: 4.9★ from 1,910 Google reviews, the most in Millbrae.
Best Septic Service Companies in Millbrae, CA (2026)
45 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Millbrae: Caccia Home Services, CR Score 60/100; 4.9★ from 1,910 Google reviews; open 7 days a week.
- 3
Best for emergencies (open 24/7): Hydroworks Plumbing, posts 24/7 hours; ranked #3 of 45.
- 2
Most-reviewed: Wizard Plumbing and Drain, 1,648 Google reviews at 4.8★, the most of 45 ranked after Caccia Home Services; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
45 Millbrae septic service companies are ranked here by CR Score, from ten published factors. 25 are open 24/7, 38 open Saturdays and 32 open Sundays, based on posted hours. The median Google rating is 4.9★ across 45 rated businesses.
Top 10 septic service companies in Millbrae at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Caccia Home Services | 60 | 4.9★ (1,910) | Burlingame, 1 mi away | Sat · Sun · Evenings | Overall |
| 2 | Wizard Plumbing and Drain | 58 | 4.8★ (1,648) | San Mateo, 6 mi away | Sat · Sun · Evenings | Most reviews |
| 3 | Hydroworks Plumbing | 58 | 5.0★ (27) | Hayward, 15 mi away | 24/7 | Emergencies |
| 4 | Tremors Plumbing And Sewer Inc. | 56 | 5.0★ (29) | San Mateo, 5 mi away | 24/7 | — |
| 5 | Ace Plumbing & Rooter, Inc. | 56 | 4.9★ (931) | San Francisco, 12 mi away | Sat · Sun · Evenings | — |
| 6 | PICHANGA PUMPING SERVICE LLC | 56 | 4.9★ (70) | Mountain View, 20 mi away | Sat · Sun | — |
| 7 | A-1 Septic Tank Service Inc | 56 | 4.4★ (34) | Hayward, 18 mi away | 24/7 | — |
| 8 | Trinity Liquid Waste Services | 56 | 4.9★ (62) | Dublin, 2 mi away | 24/7 | — |
| 9 | In & Out Plumbing and Construction | 55 | 4.6★ (119) | South San Francisco, 4 mi away | 24/7 | — |
| 10 | All Hayward Plumbing, Drain & Sewer Co. | 55 | 5.0★ (43) | Hayward, 14 mi away | 24/7 | — |
The 45 best septic service companies in Millbrae, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in San Mateo, 6 mi away
58/100CR ScoreRanked #2 because of its Google rating and review volume: 4.8★ from 1,648 Google reviews.
Based in Hayward, 15 mi away
58/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Septic system service”.
Based in San Mateo, 5 mi away
56/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Plumber”.
Based in San Francisco, 12 mi away
56/100CR ScoreRanked #5 because of its Google rating and review volume: 4.9★ from 931 Google reviews.
Based in Mountain View, 20 mi away
56/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 70 Google reviews, listed on Google as “Septic system service”.
Based in Hayward, 18 mi away
56/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.4★ from 34 Google reviews, listed on Google as “Septic system service”.
Based in Dublin, 2 mi away
56/100CR ScoreRanked #8 because of its Google rating and review volume: 4.9★ from 62 Google reviews.
Based in South San Francisco, 4 mi away
55/100CR ScoreRanked #9 because of its Google rating and review volume: 4.6★ from 119 Google reviews.
Based in Hayward, 14 mi away
55/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 43 Google reviews, listed on Google as “Plumber”.
Based in Redwood Shores, 5 mi away
55/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.8★ from 12 Google reviews, listed on Google as “Plumber”.
Based in San Mateo, 7 mi away
54/100CR ScoreRanked #12 because of its Google rating and review volume: 4.6★ from 93 Google reviews.
Based in San Mateo, 4 mi away
54/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.8★ from 46 Google reviews, listed on Google as “Plumber”.
Based in San Lorenzo, 14 mi away
54/100CR ScoreRanked #14 because of its Google rating and review volume: 5.0★ from 94 Google reviews.
Based in Daly City, 6 mi away
54/100CR ScoreRanked #15 because of its Google rating and review volume: 5.0★ from 486 Google reviews.
Based in San Francisco, 13 mi away
53/100CR ScoreRanked #16 because of its Google rating and review volume: 5.0★ from 74 Google reviews.
Based in Redwood City, 11 mi away
53/100CR ScoreRanked #17 because of its Google rating and review volume: 4.9★ from 55 Google reviews.
Based in San Bruno, 3 mi away
53/100CR ScoreRanked #18 because of its Google rating and review volume: 5.0★ from 65 Google reviews.
Based in San Francisco, 11 mi away
52/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.0★ from 13 Google reviews, listed on Google as “Plumber”.
Based in Alamo, 14 mi away
52/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.2★ from 24 Google reviews, listed on Google as “Plumber”.
Based in Belmont, 15 mi away
52/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Plumber”.
Based in San Francisco, 14 mi away
52/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Plumber”.
Based in Cherryland, 5 mi away
52/100CR ScoreRanked #23 because of its Google rating and availability: 4.5★ from 16 Google reviews, open 24/7.
Based in Hayward, 19 mi away
52/100CR ScoreRanked #24 because of its Google rating and review volume: 4.8★ from 98 Google reviews.
#25 Rescue Rooter
Based in Burlingame, 1 mi away
52/100CR ScoreRanked #25 because of its Google rating and availability: 3.7★ from 18 Google reviews, open 24/7.
All 45 septic service companies
#1 to #25 are shown in full above. Here are #26 to #45, in CR Score order; each links to its profile.
Also serving Millbrae
9 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 |
|---|---|---|
| Bay Area Restaurant Services LLC | 24 mi | |
| Castro Valley's H & R Plumbing - Plumbing Sewer Repair and Installation, Drain Cleaner | 18 mi | |
| Quick Fix Septic | 12 mi | |
| Ring's Bobcat & Drilling Services | 5.0★ (1) | 20 mi |
| SDR Plumbing And Sewer | 5.0★ (1) | 6 mi |
| Septic Services in Oakland | 16 mi | |
| Sewer & Drain Masters | 24 mi | |
| Sewer Rat Plumbing | 1 mi | |
| Sewer Rat Plumbing, Inc. | 1.0★ (1) | 14 mi |
How we ranked Millbrae septic service companies
We scored 45 Millbrae 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 Millbrae 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 Millbrae: frequently asked questions
Who is the best septic service company in Millbrae?
By CR Score, the highest-ranked septic service company in Millbrae, CA is Caccia Home Services with a CR Score of 60/100. It has 4.9★ from 1,910 Google reviews. It is open 7 days a week. Wizard Plumbing and Drain (#2) and Hydroworks Plumbing (#3) follow. We ranked 45 septic service companies on ten factors, last updated November 2, 2026.
How many septic service companies are there in Millbrae?
ContractorsRanked ranks 45 septic service companies serving Millbrae, CA. Another 9 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Millbrae are open 24/7?
25 ranked septic service companies in Millbrae post 24/7 hours. The highest-ranked are Hydroworks Plumbing (#3), Tremors Plumbing And Sewer Inc. (#4) and A-1 Septic Tank Service Inc (#7). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Millbrae work on weekends?
38 of 45 ranked septic service companies post Saturday hours and 32 post Sunday hours. The highest-ranked open Saturdays are Caccia Home Services (#1), Wizard Plumbing and Drain (#2) and Hydroworks Plumbing (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Millbrae septic service companies have?
The median Google rating among 45 rated septic service companies in Millbrae is 4.9★, with a median of 34 reviews. Caccia Home Services has the most, 1,910 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 Millbrae count in this ranking?
Yes, if they are within 25 mi of the Millbrae 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 Millbrae
- November 2026: CR Scores recalculated for 45 septic service companies serving Millbrae.
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