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 Somerville, MA (2026)
101 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Somerville: 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 101.
- 4
Most-reviewed: Spencer Plumbing Sewer and Drain Cleaning, 839 Google reviews at 4.9★, the most of 101 ranked after Wind River Environmental of Walpole, MA; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
101 Somerville septic service companies are ranked here by CR Score, from ten published factors. 39 are open 24/7, 52 open Saturdays and 40 open Sundays, based on posted hours. The median Google rating is 4.9★ across 101 rated businesses.
Most of this list also appears on the Septic service companies in Cambridge ranking. See Septic service companies in Cambridge
Top 10 septic service companies in Somerville 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, 20 mi away | 24/7 | Overall |
| 2 | John's Sewer & Drain Cleaning | 62 | 4.9★ (796) | Woburn, 10 mi away | 24/7 | Emergencies |
| 3 | Rapid Flow Sewer & Drain Cleaning | 61 | 4.9★ (493) | Arlington, 8 mi away | 24/7 | — |
| 4 | Spencer Plumbing Sewer and Drain Cleaning | 61 | 4.9★ (839) | Peabody, 13 mi away | 24/7 | Most reviews |
| 5 | Rhino Rooter | 60 | 5.0★ (25) | Boston, 5 mi away | 24/7 | — |
| 6 | Rosano Davis Sanitary Pumping Inc | 60 | 4.9★ (120) | Cohasset, 17 mi away | 24/7 | — |
| 7 | Title 5 Specialists | 60 | 5.0★ (42) | South Boston, 5 mi away | Sat · Sun | — |
| 8 | Fairbank Septic Pumping LLC | 60 | 4.9★ (93) | Sudbury, 17 mi away | 24/7 | — |
| 9 | Waste Warriors | 59 | 5.0★ (23) | South Boston, 11 mi away | 24/7 | — |
| 10 | Sewer Bros. | 59 | 5.0★ (172) | Andover, 12 mi away | 24/7 | — |
The 101 best septic service companies in Somerville, 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
62/100CR 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.
Based in Arlington, 8 mi away
61/100CR ScoreRanked #3 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, 13 mi away
61/100CR ScoreRanked #4 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.
#5 Rhino Rooter
Based in Boston, 5 mi away
60/100CR ScoreRanked #5 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 Cohasset, 17 mi away
60/100CR ScoreRanked #6 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.
Based in South Boston, 5 mi away
60/100CR ScoreRanked #7 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 Sudbury, 17 mi away
60/100CR ScoreRanked #8 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 South Boston, 11 mi away
59/100CR ScoreRanked #9 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.
#10 Sewer Bros.
Based in Andover, 12 mi away
59/100CR ScoreRanked #10 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 Boston, 12 mi away
59/100CR ScoreRanked #11 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.
#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, 24 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.
Based in Stow, 20 mi away
58/100CR ScoreRanked #14 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 Salem, 13 mi away
57/100CR ScoreRanked #15 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 Andover, 19 mi away
56/100CR ScoreRanked #16 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 Arlington, 2 mi away
56/100CR ScoreRanked #17 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.
#18 Curtis Septic
Based in Leominster, 22 mi away
56/100CR ScoreRanked #18 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.
Based in Braintree, 12 mi away
56/100CR ScoreRanked #19 because of its Google rating and review volume: 4.9★ from 166 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Andover, 20 mi away
56/100CR ScoreRanked #20 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.
Based in Holliston, 20 mi away
56/100CR ScoreRanked #21 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.
#22 Charles Roux Llc
Based in Lowell, 11 mi away
55/100CR ScoreRanked #22 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.
#23 Smith Septic
Based in Franklin, 23 mi away
55/100CR ScoreRanked #23 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 Burlington, 9 mi away
55/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 19 Google reviews, listed on Google as “Contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Acton, 17 mi away
55/100CR ScoreRanked #25 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.
How we ranked Somerville septic service companies
We scored 101 Somerville 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 2, 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 Somerville 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 Somerville: frequently asked questions
Who is the best septic service company in Somerville?
By CR Score, the highest-ranked septic service company in Somerville, 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 Rapid Flow Sewer & Drain Cleaning (#3) follow. We ranked 101 septic service companies on ten factors, last updated November 2, 2026.
How many septic service companies are there in Somerville?
ContractorsRanked ranks 101 septic service companies serving Somerville, MA. Counts are as of November 2026.
Which septic service companies in Somerville are open 24/7?
39 ranked septic service companies in Somerville post 24/7 hours. The highest-ranked are Wind River Environmental of Walpole, MA (#1), John's Sewer & Drain Cleaning (#2) and Rapid Flow Sewer & Drain Cleaning (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Somerville work on weekends?
52 of 101 ranked septic service companies post Saturday hours and 40 post Sunday hours. The highest-ranked open Saturdays are Wind River Environmental of Walpole, MA (#1), John's Sewer & Drain Cleaning (#2) and Rapid Flow Sewer & Drain Cleaning (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Somerville septic service companies have?
The median Google rating among 101 rated septic service companies in Somerville is 4.9★, with a median of 15 reviews. Wind River Environmental of Walpole, MA has the most, 846 reviews, and ranks #1. 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 Somerville count in this ranking?
Yes, if they are within 25 mi of the Somerville 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 Somerville
- November 2026: CR Scores recalculated for 101 septic service companies serving Somerville.
More septic service companies and Somerville pages
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