60/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 70 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in Los Altos, 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 Los Altos: PICHANGA PUMPING SERVICE LLC, CR Score 60/100; 4.9★ from 70 Google reviews; open 7 days a week.
- 2
Best for emergencies (open 24/7): $15 Sewer & Drain Service, posts 24/7 hours; ranked #2 of 56.
- 10
Most-reviewed: Caccia Home Services, 1,910 Google reviews at 4.9★, the most of 56 ranked; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
56 Los Altos septic service companies are ranked here by CR Score, from ten published factors. 29 are open 24/7, 49 open Saturdays and 38 open Sundays, based on posted hours. The median Google rating is 4.8★ across 56 rated businesses.
Top 10 septic service companies in Los Altos at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | PICHANGA PUMPING SERVICE LLC | 60 | 4.9★ (70) | Mountain View, 3 mi away | Sat · Sun | Overall |
| 2 | $15 Sewer & Drain Service | 59 | 4.8★ (609) | San Jose, 14 mi away | 24/7 | Emergencies |
| 3 | Superior Plumbing | 57 | 4.9★ (433) | San Jose, 8 mi away | 24/7 | — |
| 4 | Elite Rooter | 57 | 4.7★ (1,298) | San Jose, 12 mi away | 24/7 | — |
| 5 | Hydroworks Plumbing | 57 | 5.0★ (27) | Hayward, 17 mi away | 24/7 | — |
| 6 | Mr. Rooter Plumbing of Sunnyvale - Mountain View | 57 | 4.9★ (137) | Sunnyvale, 4 mi away | 24/7 | — |
| 7 | Comet Plumbing & Sewer Co. | 57 | 4.9★ (97) | Sunnyvale, 5 mi away | Sat · Sun · Evenings | — |
| 8 | A-1 Septic Tank Service Inc | 56 | 4.4★ (34) | Hayward, 17 mi away | 24/7 | — |
| 9 | Wizard Plumbing and Drain | 56 | 4.8★ (1,648) | San Mateo, 15 mi away | Sat · Sun · Evenings | — |
| 10 | Caccia Home Services | 55 | 4.9★ (1,910) | Burlingame, 20 mi away | Sat · Sun · Evenings | Most reviews |
The 56 best septic service companies in Los Altos, 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 Jose, 14 mi away
59/100CR ScoreRanked #2 because of its Google rating and review volume: 4.8★ from 609 Google reviews.
Based in San Jose, 8 mi away
57/100CR ScoreRanked #3 because of its Google rating and review volume: 4.9★ from 433 Google reviews.
#4 Elite Rooter
Based in San Jose, 12 mi away
57/100CR ScoreRanked #4 because of its Google rating and review volume: 4.7★ from 1,298 Google reviews.
Based in Hayward, 17 mi away
57/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Septic system service”.
Based in Sunnyvale, 4 mi away
57/100CR ScoreRanked #6 because of its Google rating and review volume: 4.9★ from 137 Google reviews.
Based in Sunnyvale, 5 mi away
57/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 97 Google reviews, listed on Google as “Plumber”.
Based in Hayward, 17 mi away
56/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.4★ from 34 Google reviews, listed on Google as “Septic system service”.
Based in San Mateo, 15 mi away
56/100CR ScoreRanked #9 because of its Google rating and review volume: 4.8★ from 1,648 Google reviews.
Based in Burlingame, 20 mi away
55/100CR ScoreRanked #10 because of its Google rating and review volume: 4.9★ from 1,910 Google reviews, the most in Los Altos.
Based in San Jose, 16 mi away
55/100CR ScoreRanked #11 because of its Google rating and review volume: 4.9★ from 409 Google reviews.
Based in San Jose, 12 mi away
54/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.5★ from 64 Google reviews, listed on Google as “Plumber”.
#13 Bailey Plumbing
Based in Los Gatos, 13 mi away
54/100CR ScoreRanked #13 because of its Google rating and review volume: 4.9★ from 109 Google reviews.
Based in Hayward, 18 mi away
54/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 43 Google reviews, listed on Google as “Plumber”.
Based in Redwood City, 10 mi away
53/100CR ScoreRanked #15 because of its Google rating and review volume: 4.9★ from 55 Google reviews.
Based in San Mateo, 16 mi away
53/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Plumber”.
Based in San Jose, 12 mi away
53/100CR ScoreRanked #17 because of its Google rating and review volume: 4.9★ from 157 Google reviews.
Based in San Jose, 11 mi away
53/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.2★ from 28 Google reviews, listed on Google as “Plumber”.
Based in San Jose, 12 mi away
53/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Septic system service”.
Based in Belmont, 12 mi away
53/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Plumber”.
Based in Santa Clara, 9 mi away
53/100CR ScoreRanked #21 because of its Google rating and review volume: 5.0★ from 154 Google reviews.
Based in Fremont, 12 mi away
52/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.1★ from 26 Google reviews, listed on Google as “Plumber”.
Based in San Lorenzo, 20 mi away
52/100CR ScoreRanked #23 because of its Google rating and review volume: 5.0★ from 94 Google reviews.
Based in Campbell, 13 mi away
52/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.7★ from 12 Google reviews, listed on Google as “Plumber”.
Based in San Mateo, 14 mi away
52/100CR ScoreRanked #25 because of its Google rating and review volume: 4.6★ from 93 Google reviews.
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 Los Altos
8 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 |
|---|---|---|
| Campbell Sanitary Sewer Services | 12 mi | |
| Castro Valley's H & R Plumbing - Plumbing Sewer Repair and Installation, Drain Cleaner | 18 mi | |
| Handyman Plumbers Sewer & Drain Cleaning | 5.0★ (2) | 17 mi |
| M.S Plumbing & Sewer Cleaner | 13 mi | |
| Ring's Bobcat & Drilling Services | 5.0★ (1) | 9 mi |
| SDR Plumbing And Sewer | 5.0★ (1) | 15 mi |
| Sewer Rat Plumbing | 20 mi | |
| VIB Coastal Septic | 20 mi |
How we ranked Los Altos septic service companies
We scored 56 Los Altos 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 Los Altos 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 Los Altos: frequently asked questions
Who is the best septic service company in Los Altos?
By CR Score, the highest-ranked septic service company in Los Altos, CA is PICHANGA PUMPING SERVICE LLC with a CR Score of 60/100. It has 4.9★ from 70 Google reviews. It is open 7 days a week. $15 Sewer & Drain Service (#2) and Superior Plumbing (#3) follow. We ranked 56 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Los Altos?
ContractorsRanked ranks 56 septic service companies serving Los Altos, CA. Another 8 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Los Altos are open 24/7?
29 ranked septic service companies in Los Altos post 24/7 hours. The highest-ranked are $15 Sewer & Drain Service (#2), Superior Plumbing (#3) and Elite Rooter (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Los Altos work on weekends?
49 of 56 ranked septic service companies post Saturday hours and 38 post Sunday hours. The highest-ranked open Saturdays are PICHANGA PUMPING SERVICE LLC (#1), $15 Sewer & Drain Service (#2) and Superior Plumbing (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Los Altos septic service companies have?
The median Google rating among 56 rated septic service companies in Los Altos is 4.8★, with a median of 33 reviews. Caccia Home Services has the most, 1,910 reviews, and ranks #10. 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 Los Altos count in this ranking?
Yes, if they are within 25 mi of the Los Altos 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 Los Altos
- November 2026: CR Scores recalculated for 56 septic service companies serving Los Altos.
More septic service companies and Los Altos pages
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