63/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 382 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 Hamilton Worcester, MA (2026)
91 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Hamilton Worcester: JL Darling Septic Tank Pumping, CR Score 63/100; 5.0★ from 382 Google reviews; open 24/7.
- 3
Best for emergencies (open 24/7): Northboro / Curtis Septic Service, posts 24/7 hours; ranked #3 of 91.
- 5
Most-reviewed: Wind River Environmental, 854 Google reviews at 4.9★, the most of 91 ranked; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
91 Hamilton Worcester septic service companies are ranked here by CR Score, from ten published factors. 28 are open 24/7, 50 open Saturdays and 31 open Sundays, based on posted hours. The median Google rating is 4.9★ across 91 rated businesses.
Top 10 septic service companies in Hamilton Worcester at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | JL Darling Septic Tank Pumping | 63 | 5.0★ (382) | Uxbridge, 17 mi away | 24/7 | Overall |
| 2 | Grant's Septic Techs | 62 | 5.0★ (590) | Worcester, 9 mi away | Sat | — |
| 3 | Northboro / Curtis Septic Service | 61 | 4.9★ (73) | Northborough, 8 mi away | 24/7 | Emergencies |
| 4 | Blackstone Septic Service | 59 | 5.0★ (17) | Millbury, 6 mi away | 24/7 | — |
| 5 | Wind River Environmental | 59 | 4.9★ (854) | Hudson, 10 mi away | 24/7 | Most reviews |
| 6 | Fairbank Septic Pumping LLC | 59 | 4.9★ (93) | Sudbury, 19 mi away | 24/7 | — |
| 7 | DownEast Title V Inspections, LLC | 59 | 5.0★ (47) | Haverhill, 16 mi away | 24/7 | — |
| 8 | Curtis Septic Service | 58 | 4.7★ (77) | Stow, 19 mi away | 24/7 | — |
| 9 | Dumont Septic Pumping | 58 | 5.0★ (26) | Charlton, 15 mi away | 24/7 | — |
| 10 | Helgerson's Environmental & Septic | 58 | 4.9★ (105) | Charlton, 10 mi away | 24/7 | — |
The 91 best septic service companies in Hamilton Worcester, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Worcester, 9 mi away
62/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 590 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Northborough, 8 mi away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 73 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Millbury, 6 mi away
59/100CR ScoreRanked #4 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.
Based in Hudson, 10 mi away
59/100CR ScoreRanked #5 because of its Google rating and review volume: 4.9★ from 854 Google reviews, the most in Hamilton Worcester.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sudbury, 19 mi away
59/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 93 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Haverhill, 16 mi away
59/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 47 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Stow, 19 mi away
58/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.7★ from 77 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Charlton, 15 mi away
58/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Charlton, 10 mi away
58/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 105 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#11 ADC Septic
Based in Blackstone, 19 mi away
57/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.7★ from 53 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#12 Smith Septic
Based in Franklin, 14 mi away
57/100CR ScoreRanked #12 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.
Based in Marlborough, 12 mi away
57/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 141 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Leicester, 10 mi away
57/100CR ScoreRanked #14 because of its Google rating and trade focus: 3.8★ from 27 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sutton, 6 mi away
56/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.6★ from 105 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Holliston, 17 mi away
56/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.5★ from 24 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Leicester, 8 mi away
56/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Blackstone, 19 mi away
55/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.7★ from 329 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Charlton, 14 mi away
55/100CR ScoreRanked #19 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 Holliston, 17 mi away
55/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 98 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sterling, 11 mi away
55/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 39 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Acton, 10 mi away
54/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 37 Google reviews, listed on Google as “General contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Holden, 15 mi away
54/100CR ScoreRanked #23 because of its Google rating and review volume: 5.0★ from 133 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
#24 R M Ratta Corp
Based in Fitchburg, 25 mi away
54/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 204 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Worcester, 1 mi away
54/100CR ScoreRanked #25 because of its Google rating and trade focus: 2.6★ from 5 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability 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 91 ranked septic service companies here; the rest are on their profiles.
Also serving Hamilton Worcester
20 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 |
|---|---|---|
| American Sewerage Septic Tanks | 3.0★ (2) | 8 mi |
| Audet Septic Services | 5.0★ (1) | 22 mi |
| Barrows Septic Services | 5 mi | |
| Beals & Sons Inc. - Construction Company | 5.0★ (1) | 7 mi |
| CDM Septic & Construction | 1.0★ (1) | 20 mi |
| Cutler Contracting, Inc. | 5.0★ (1) | 20 mi |
| David Favreau Construction & Septic Services | 5.0★ (2) | 11 mi |
| E A Comeau Septic | 5.0★ (1) | 22 mi |
| G. Nichols Construction Co., Inc | 5.0★ (2) | 21 mi |
| Groundscapes Inc. | 5.0★ (2) | 5 mi |
| L H Sewerage Inc | 5.0★ (2) | 11 mi |
| M G Stanick Septic Pumping Services | 4.5★ (2) | 14 mi |
| Mark Santora PE Inc | 5.0★ (2) | 6 mi |
| NorthEast Classic Builders | 1.0★ (1) | 24 mi |
| P & M Asphalt Services Inc | 1.0★ (1) | 7 mi |
| R Gustafson Sewer & Drain | 3.0★ (2) | 4 mi |
| R.E Barrows Septic Service & Construction | 5.0★ (1) | 2 mi |
| Rotti Construction Co | 5.0★ (1) | 9 mi |
| Septic-Tech Inspector | 5.0★ (1) | 9 mi |
| Trinity Industries Corporation | 5.0★ (1) | 14 mi |
How we ranked Hamilton Worcester septic service companies
We scored 91 Hamilton Worcester 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 Hamilton Worcester 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 Hamilton Worcester: frequently asked questions
Who is the best septic service company in Hamilton Worcester?
By CR Score, the highest-ranked septic service company in Hamilton Worcester, MA is JL Darling Septic Tank Pumping with a CR Score of 63/100. It has 5.0★ from 382 Google reviews. It is open 24/7. Grant's Septic Techs (#2) and Northboro / Curtis Septic Service (#3) follow. We ranked 91 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Hamilton Worcester?
ContractorsRanked ranks 91 septic service companies serving Hamilton Worcester, MA. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Hamilton Worcester are open 24/7?
28 ranked septic service companies in Hamilton Worcester post 24/7 hours. The highest-ranked are JL Darling Septic Tank Pumping (#1), Northboro / Curtis Septic Service (#3) and Blackstone Septic Service (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Hamilton Worcester work on weekends?
50 of 91 ranked septic service companies post Saturday hours and 31 post Sunday hours. The highest-ranked open Saturdays are JL Darling Septic Tank Pumping (#1), Grant's Septic Techs (#2) and Northboro / Curtis Septic Service (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Hamilton Worcester septic service companies have?
The median Google rating among 91 rated septic service companies in Hamilton Worcester is 4.9★, with a median of 17 reviews. Wind River Environmental has the most, 854 reviews, and ranks #5. 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 Hamilton Worcester count in this ranking?
Yes, if they are within 25 mi of the Hamilton Worcester 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 Hamilton Worcester
- November 2026: CR Scores recalculated for 91 septic service companies serving Hamilton Worcester.
More septic service companies and Hamilton Worcester pages
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