59/100CR 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 Gilroy, CA (2026)
29 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Gilroy: Castle Pumping and Plumbing Services, CR Score 59/100; 5.0★ from 27 Google reviews; open 24/7.
- 3
Best for emergencies (open 24/7): Cid's Septic, posts 24/7 hours; ranked #3 of 29.
- 6
Most-reviewed: Roto-Rooter Plumbing & Water Cleanup, 877 Google reviews at 4.7★, the most of 29 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
29 Gilroy septic service companies are ranked here by CR Score, from ten published factors. 8 are open 24/7, 18 open Saturdays and 11 open Sundays, based on posted hours. The median Google rating is 4.7★ across 29 rated businesses.
Top 10 septic service companies in Gilroy at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Castle Pumping and Plumbing Services | 59 | 5.0★ (27) | East Foothills, 4 mi away | 24/7 | Overall |
| 2 | Ryans pumping service Inc | 57 | 5.0★ (17) | Gilroy | Sat · Evenings | — |
| 3 | Cid's Septic | 57 | 3.7★ (3) | Gilroy | 24/7 | Emergencies |
| 4 | COST-U-LESS SEPTIC PUMPING SERVICE | 56 | 4.4★ (12) | Gilroy | — | — |
| 5 | Bailey Plumbing | 56 | 4.6★ (328) | Morgan Hill, 9 mi away | 24/7 | — |
| 6 | Roto-Rooter Plumbing & Water Cleanup | 55 | 4.7★ (877) | Salinas, 22 mi away | 24/7 | Most reviews |
| 7 | Platinum Rooter Plumbing and Septic Inc. | 55 | 4.9★ (52) | East Foothills, 15 mi away | 24/7 | — |
| 8 | Duncan Plumbing | 54 | 4.9★ (716) | Santa Cruz, 22 mi away | Sat · Sun · Evenings | — |
| 9 | Morton Septic Service Inc | 54 | 4.7★ (11) | Gilroy | — | — |
| 10 | Salinas Septic Sewer Services | 53 | 5.0★ (10) | Salinas, 24 mi away | 24/7 | — |
The 29 best septic service companies in Gilroy, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Gilroy
57/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#3 Cid's Septic
Based in Gilroy
57/100CR ScoreRanked #3 because of its Google rating and trade focus: 3.7★ 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 Gilroy
56/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.4★ from 12 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Morgan Hill, 9 mi away
56/100CR ScoreRanked #5 because of its Google rating and review volume: 4.6★ from 328 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Salinas, 22 mi away
55/100CR ScoreRanked #6 because of its Google rating and review volume: 4.7★ from 877 Google reviews, the most in Gilroy.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Foothills, 15 mi away
55/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 52 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Cruz, 22 mi away
54/100CR ScoreRanked #8 because of its Google rating and review volume: 4.9★ from 716 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gilroy
54/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.7★ from 11 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Salinas, 24 mi away
53/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Jose, 25 mi away
53/100CR ScoreRanked #11 because of its Google rating and review volume: 4.9★ from 409 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
#12 Alvarez Plumbing
Based in Salinas, 23 mi away
53/100CR ScoreRanked #12 because of its Google rating and review volume: 4.9★ from 204 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lodi, 7 mi away
53/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ 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 Hollister, 13 mi away
53/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.7★ from 12 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Morgan Hill, 10 mi away
53/100CR ScoreRanked #15 because of its Google rating and trade focus: 3.8★ from 14 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Salinas, 24 mi away
51/100CR ScoreRanked #16 because of its Google rating and trade focus: 2.7★ from 6 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#17 HNG Construction
Based in Salinas, 16 mi away
50/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Castroville, 20 mi away
50/100CR ScoreRanked #18 because of its Google rating and trade focus: 3.8★ from 10 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Morgan Hill, 9 mi away
50/100CR ScoreRanked #19 because of its Google rating and review volume: 4.2★ from 42 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Soquel, 22 mi away
49/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.6★ from 15 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Salinas, 22 mi away
48/100CR ScoreRanked #21 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 San Jose, 24 mi away
48/100CR ScoreRanked #22 because of its Google rating and trade focus: 3.2★ from 31 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gilroy
47/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Portable toilet supplier”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Salinas, 16 mi away
47/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Watsonville, 12 mi away
46/100CR ScoreRanked #25 because of its Google rating and review volume: 4.2★ from 37 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
All 29 septic service companies
#1 to #25 are shown in full above. Here are #26 to #29, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Landmark Plumbing | 45 | 5.0★ (6) | 22 mi |
| 27 | Garrison Plumbing Inc. | 44 | 5.0★ (25) | 24 mi |
| 28 | The Don Chapin Company, Inc. | 44 | 4.3★ (11) | 15 mi |
| 29 | Acme Plumbing | 43 | 4.1★ (51) | 24 mi |
Also serving Gilroy
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 |
|---|---|---|
| Affordable Underground | 5.0★ (1) | 11 mi |
| Al's Septic Tank Services | 5.0★ (2) | 20 mi |
| Handyman Plumbers Sewer & Drain Cleaning | 5.0★ (2) | 24 mi |
| Henry's Plumbing | 19 mi | |
| Irish Excavation | 3.0★ (2) | 8 mi |
| Septic Tank Pumping | 4.0★ (1) | 16 mi |
| Tom's Septic Construction | 5.0★ (1) | 15 mi |
| Tom's Septic Tank Services | 1.0★ (1) | 12 mi |
| West Coast Pipe Line | In Gilroy |
How we ranked Gilroy septic service companies
We scored 29 Gilroy 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 Gilroy 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 Gilroy: frequently asked questions
Who is the best septic service company in Gilroy?
By CR Score, the highest-ranked septic service company in Gilroy, CA is Castle Pumping and Plumbing Services with a CR Score of 59/100. It has 5.0★ from 27 Google reviews. It is open 24/7. Ryans pumping service Inc (#2) and Cid's Septic (#3) follow. We ranked 29 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Gilroy?
ContractorsRanked ranks 29 septic service companies serving Gilroy, CA. 5 of them are based in Gilroy; the rest serve it from nearby towns. Another 9 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Gilroy are open 24/7?
8 ranked septic service companies in Gilroy post 24/7 hours. The highest-ranked are Castle Pumping and Plumbing Services (#1), Cid's Septic (#3) and Bailey Plumbing (#5). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Gilroy work on weekends?
18 of 29 ranked septic service companies post Saturday hours and 11 post Sunday hours. The highest-ranked open Saturdays are Castle Pumping and Plumbing Services (#1), Ryans pumping service Inc (#2) and Cid's Septic (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Gilroy septic service companies have?
The median Google rating among 29 rated septic service companies in Gilroy is 4.7★, with a median of 14 reviews. Roto-Rooter Plumbing & Water Cleanup has the most, 877 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 Gilroy count in this ranking?
Yes, if they are within 25 mi of the Gilroy 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 Gilroy
- November 2026: CR Scores recalculated for 29 septic service companies serving Gilroy.
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