63/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 846 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 Watertown, MA (2026)
103 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Watertown: Wind River Environmental of Walpole, MA, CR Score 63/100; 4.9★ from 846 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): John's Sewer & Drain Cleaning, posts 24/7 hours; ranked #2 of 103.
- 36
Most-reviewed: New Era Plumbing & HVAC, 1,003 Google reviews at 4.9★, the most of 103 ranked; ranked #36.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
103 Watertown septic service companies are ranked here by CR Score, from ten published factors. 39 are open 24/7, 55 open Saturdays and 42 open Sundays, based on posted hours. The median Google rating is 4.9★ across 103 rated businesses.
Top 10 septic service companies in Watertown at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Wind River Environmental of Walpole, MA | 63 | 4.9★ (846) | Walpole, 18 mi away | 24/7 | Overall |
| 2 | John's Sewer & Drain Cleaning | 61 | 4.9★ (796) | Woburn, 10 mi away | 24/7 | Emergencies |
| 3 | Rhino Rooter | 61 | 5.0★ (25) | Boston, 2 mi away | 24/7 | — |
| 4 | Fairbank Septic Pumping LLC | 61 | 4.9★ (93) | Sudbury, 12 mi away | 24/7 | — |
| 5 | Rapid Flow Sewer & Drain Cleaning | 60 | 4.9★ (493) | Arlington, 12 mi away | 24/7 | — |
| 6 | Spencer Plumbing Sewer and Drain Cleaning | 60 | 4.9★ (839) | Peabody, 17 mi away | 24/7 | — |
| 7 | Woburn Drains & Sewer | 59 | 4.8★ (32) | Boston, 9 mi away | 24/7 | — |
| 8 | Title 5 Specialists | 59 | 5.0★ (42) | South Boston, 7 mi away | Sat · Sun | — |
| 9 | Rosano Davis Sanitary Pumping Inc | 59 | 4.9★ (120) | Cohasset, 20 mi away | 24/7 | — |
| 10 | Waste Warriors | 59 | 5.0★ (23) | South Boston, 11 mi away | 24/7 | — |
The 103 best septic service companies in Watertown, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Woburn, 10 mi away
61/100CR ScoreRanked #2 because of its Google rating and review volume: 4.9★ from 796 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
#3 Rhino Rooter
Based in Boston, 2 mi away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sudbury, 12 mi away
61/100CR ScoreRanked #4 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 Arlington, 12 mi away
60/100CR ScoreRanked #5 because of its Google rating and review volume: 4.9★ from 493 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Peabody, 17 mi away
60/100CR ScoreRanked #6 because of its Google rating and review volume: 4.9★ from 839 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Boston, 9 mi away
59/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.8★ from 32 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in South Boston, 7 mi away
59/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 42 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cohasset, 20 mi away
59/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 120 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#10 Waste Warriors
Based in South Boston, 11 mi away
59/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Stow, 16 mi away
59/100CR ScoreRanked #11 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.
#12 Wayne's Drains
Based in Burlington, 10 mi away
58/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.3★ from 59 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Foxborough, 22 mi away
58/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 366 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
#14 Sewer Bros.
Based in Andover, 14 mi away
58/100CR ScoreRanked #14 because of its Google rating and review volume: 5.0★ from 172 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Northborough, 23 mi away
58/100CR ScoreRanked #15 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 Holliston, 16 mi away
57/100CR 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.
#17 Curtis Septic
Based in Leominster, 19 mi away
56/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#18 Smith Septic
Based in Franklin, 19 mi away
56/100CR ScoreRanked #18 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 Andover, 19 mi away
56/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.6★ 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 Salem, 17 mi away
56/100CR ScoreRanked #20 because of its Google rating and review volume: 4.8★ from 125 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Acton, 14 mi away
56/100CR ScoreRanked #21 because of its Google rating and review volume: 4.8★ from 290 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Arlington, 3 mi away
56/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Andover, 21 mi away
55/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#24 Charles Roux Llc
Based in Lowell, 11 mi away
55/100CR ScoreRanked #24 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 Sudbury, 11 mi away
55/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.4★ from 12 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency 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 103 ranked septic service companies here; the rest are on their profiles.
Also serving Watertown
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 |
|---|---|---|
| ABC Plumbing Drain Sewer Clng | 5.0★ (1) | 10 mi |
| Beals & Sons Inc. - Construction Company | 5.0★ (1) | 25 mi |
| Borough Sewer Services | 4.0★ (1) | 24 mi |
| Cutler Contracting, Inc. | 5.0★ (1) | 12 mi |
| D&M Masonry & Construction | 5.0★ (1) | 15 mi |
| E A Comeau Septic | 5.0★ (1) | 13 mi |
| Final Grade Excavation inc. | 5.0★ (1) | 19 mi |
| G. Nichols Construction Co., Inc | 5.0★ (2) | 16 mi |
| JPAC Enterprises, LLC | 5.0★ (1) | 16 mi |
| Land Engineering & Envrmntl | 5.0★ (2) | 23 mi |
| Medford Sewer Shop | 5.0★ (1) | 5 mi |
| Newton Plumbing & Sewer | 3 mi | |
| NorthEast Classic Builders | 1.0★ (1) | 7 mi |
| Raggs Septic Service | 1.0★ (1) | 12 mi |
| Rhino Rooter | 1 mi | |
| Septic Solutions LLC | 5.0★ (1) | 19 mi |
| Septic-Tech Inspector | 5.0★ (1) | 23 mi |
| Trinity Industries Corporation | 5.0★ (1) | 18 mi |
| Trufant Industries, Inc. | 5.0★ (2) | 12 mi |
| Wind River Environmental of Gloucester, MA | 5.0★ (1) | 23 mi |
How we ranked Watertown septic service companies
We scored 103 Watertown 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 Watertown 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 Watertown: frequently asked questions
Who is the best septic service company in Watertown?
By CR Score, the highest-ranked septic service company in Watertown, MA is Wind River Environmental of Walpole, MA with a CR Score of 63/100. It has 4.9★ from 846 Google reviews. It is open 24/7. John's Sewer & Drain Cleaning (#2) and Rhino Rooter (#3) follow. We ranked 103 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Watertown?
ContractorsRanked ranks 103 septic service companies serving Watertown, MA. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Watertown are open 24/7?
39 ranked septic service companies in Watertown post 24/7 hours. The highest-ranked are Wind River Environmental of Walpole, MA (#1), John's Sewer & Drain Cleaning (#2) and Rhino Rooter (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Watertown work on weekends?
55 of 103 ranked septic service companies post Saturday hours and 42 post Sunday hours. The highest-ranked open Saturdays are Wind River Environmental of Walpole, MA (#1), John's Sewer & Drain Cleaning (#2) and Rhino Rooter (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Watertown septic service companies have?
The median Google rating among 103 rated septic service companies in Watertown is 4.9★, with a median of 17 reviews. New Era Plumbing & HVAC has the most, 1,003 reviews, and ranks #36. 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 Watertown count in this ranking?
Yes, if they are within 25 mi of the Watertown 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 Watertown
- November 2026: CR Scores recalculated for 103 septic service companies serving Watertown.
More septic service companies and Watertown pages
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