56/100CR 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 Hollister, CA (2026)
27 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Hollister: Castle Pumping and Plumbing Services, CR Score 56/100; 5.0★ from 27 Google reviews; open 24/7.
- 3
Best for emergencies (open 24/7): Roto-Rooter Plumbing & Water Cleanup, posts 24/7 hours; ranked #3 of 27.
- 3
Most-reviewed: Roto-Rooter Plumbing & Water Cleanup, 877 Google reviews at 4.7★, the most of 27 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
27 Hollister septic service companies are ranked here by CR Score, from ten published factors. 8 are open 24/7, 16 open Saturdays and 11 open Sundays, based on posted hours. The median Google rating is 4.9★ across 27 rated businesses.
Top 10 septic service companies in Hollister at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Castle Pumping and Plumbing Services | 56 | 5.0★ (27) | East Foothills, 13 mi away | 24/7 | Overall |
| 2 | S.o.s septic tank service | 56 | 4.7★ (12) | Hollister | — | — |
| 3 | Roto-Rooter Plumbing & Water Cleanup | 56 | 4.7★ (877) | Salinas, 19 mi away | 24/7 | Emergencies, Most reviews |
| 4 | Salinas Septic Sewer Services | 54 | 5.0★ (10) | Salinas, 18 mi away | 24/7 | — |
| 5 | Alvarez Plumbing | 54 | 4.9★ (204) | Salinas, 19 mi away | 24/7 | — |
| 6 | Ryans pumping service Inc | 53 | 5.0★ (17) | Gilroy, 15 mi away | Sat · Evenings | — |
| 7 | Cid's Septic | 53 | 3.7★ (3) | Gilroy, 14 mi away | 24/7 | — |
| 8 | Bailey Plumbing | 52 | 4.6★ (328) | Morgan Hill, 23 mi away | 24/7 | — |
| 9 | Pacific Sewer & Drain | 52 | 5.0★ (14) | Prunedale, 23 mi away | Sat · Sun | — |
| 10 | Quick Septic Pump & Liquid Waste | 52 | 5.0★ (6) | Soledad, 23 mi away | 24/7 | — |
The 27 best septic service companies in Hollister, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Hollister
56/100CR ScoreRanked #2 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 Salinas, 19 mi away
56/100CR ScoreRanked #3 because of its Google rating and review volume: 4.7★ from 877 Google reviews, the most in Hollister.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Salinas, 18 mi away
54/100CR ScoreRanked #4 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 Salinas, 19 mi away
54/100CR ScoreRanked #5 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 Gilroy, 15 mi away
53/100CR ScoreRanked #6 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.
#7 Cid's Septic
Based in Gilroy, 14 mi away
53/100CR ScoreRanked #7 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 Morgan Hill, 23 mi away
52/100CR ScoreRanked #8 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 Prunedale, 23 mi away
52/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ 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 Soledad, 23 mi away
52/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gilroy, 14 mi away
52/100CR ScoreRanked #11 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 Salinas, 19 mi away
52/100CR ScoreRanked #12 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.
Based in Gilroy, 12 mi away
51/100CR ScoreRanked #13 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.
#14 HNG Construction
Based in Salinas, 15 mi away
50/100CR ScoreRanked #14 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 Lodi, 20 mi away
50/100CR ScoreRanked #15 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 Castroville, 20 mi away
50/100CR ScoreRanked #16 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 Salinas, 16 mi away
49/100CR ScoreRanked #17 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 Morgan Hill, 24 mi away
49/100CR ScoreRanked #18 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, 15 mi away
46/100CR ScoreRanked #19 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 Morgan Hill, 23 mi away
46/100CR ScoreRanked #20 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 Prunedale, 17 mi away
46/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Capitola, 17 mi away
45/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Construction company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Salinas, 13 mi away
44/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.3★ from 11 Google reviews, listed on Google as “Paving contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#24 Acme Plumbing
Based in Salinas, 19 mi away
44/100CR ScoreRanked #24 because of its Google rating and review volume: 4.1★ from 51 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Watsonville, 20 mi away
43/100CR 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 27 septic service companies
#1 to #25 are shown in full above. Here are #26 to #27, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | United Rentals - Reliable Onsite Services | 43 | 5.0★ (6) | 13 mi |
| 27 | Bailey Dent | 40 | 5.0★ (4) | 23 mi |
Also serving Hollister
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 |
|---|---|---|
| Al's Septic Tank Services | 5.0★ (2) | 16 mi |
| caliseptictankpumpingservices | 5.0★ (1) | 23 mi |
| Diamond Sanitation Services LLC | 23 mi | |
| Irish Excavation | 3.0★ (2) | 22 mi |
| Rocha Backhoe Service, Inc. | 5.0★ (2) | 25 mi |
| Septic Tank Pumping | 4.0★ (1) | 15 mi |
| Tom's Septic Construction | 5.0★ (1) | 13 mi |
| Tom's Septic Tank Services | 1.0★ (1) | 20 mi |
How we ranked Hollister septic service companies
We scored 27 Hollister 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 Hollister 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 Hollister: frequently asked questions
Who is the best septic service company in Hollister?
By CR Score, the highest-ranked septic service company in Hollister, CA is Castle Pumping and Plumbing Services with a CR Score of 56/100. It has 5.0★ from 27 Google reviews. It is open 24/7. S.o.s septic tank service (#2) and Roto-Rooter Plumbing & Water Cleanup (#3) follow. We ranked 27 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Hollister?
ContractorsRanked ranks 27 septic service companies serving Hollister, CA. 1 of them is based in Hollister; the rest serve it from nearby towns. Another 8 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Hollister are open 24/7?
8 ranked septic service companies in Hollister post 24/7 hours. The highest-ranked are Castle Pumping and Plumbing Services (#1), Roto-Rooter Plumbing & Water Cleanup (#3) and Salinas Septic Sewer Services (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Hollister work on weekends?
16 of 27 ranked septic service companies post Saturday hours and 11 post Sunday hours. The highest-ranked open Saturdays are Castle Pumping and Plumbing Services (#1), Roto-Rooter Plumbing & Water Cleanup (#3) and Salinas Septic Sewer Services (#4). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Hollister septic service companies have?
The median Google rating among 27 rated septic service companies in Hollister is 4.9★, with a median of 11 reviews. Roto-Rooter Plumbing & Water Cleanup has the most, 877 reviews, and ranks #3. 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 Hollister count in this ranking?
Yes, if they are within 25 mi of the Hollister 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 Hollister
- November 2026: CR Scores recalculated for 27 septic service companies serving Hollister.
- November 2026: 1 duplicate listing merged.
More septic service companies and Hollister pages
Septic service companies near Hollister
- Septic service companies in Gilroy, CA29 ranked
- Septic service companies in Prunedale, CA34 ranked
- Septic service companies in Salinas, CA30 ranked
- Septic service companies in Watsonville, CA38 ranked
- Septic service companies in Morgan Hill, CA43 ranked
- Septic service companies in Marina, CA23 ranked
- Septic service companies in Soledad, CA11 ranked
- Septic service companies in Seaside, CA18 ranked
- Septic service companies in Capitola, CA38 ranked
- Septic service companies in Monterey, CA18 ranked
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