61/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 123 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 Portsmouth, RI (2026)
80 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Portsmouth: ProSeptic, CR Score 61/100; 5.0★ from 123 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): New England Sewer and Drain, posts 24/7 hours; ranked #2 of 80.
- 33
Most-reviewed: Bay State Sewage Disposal, Inc. Environmental Services Company, 1,634 Google reviews at 4.9★, the most of 80 ranked; ranked #33.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
80 Portsmouth septic service companies are ranked here by CR Score, from ten published factors. 21 are open 24/7, 46 open Saturdays and 25 open Sundays, based on posted hours. The median Google rating is 4.9★ across 80 rated businesses.
Top 10 septic service companies in Portsmouth at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | ProSeptic | 61 | 5.0★ (123) | East Greenwich, 13 mi away | 24/7 | Overall |
| 2 | New England Sewer and Drain | 58 | 5.0★ (150) | Swansea, 9 mi away | 24/7 | Emergencies |
| 3 | Bass' Reddy Rooter | 58 | 4.9★ (774) | Fall River, 10 mi away | 24/7 | — |
| 4 | A Rego Septic Service | 58 | 3.9★ (11) | Portsmouth | 24/7 | — |
| 5 | SouthCoast Septic Services | 58 | 5.0★ (33) | New Bedford, 14 mi away | 24/7 | — |
| 6 | Mr. Rooter Plumbing of Rhode Island | 58 | 4.9★ (1,027) | Warwick, 13 mi away | 24/7 | — |
| 7 | Dartmouth Honey Wagon | 58 | 4.9★ (27) | New Bedford, 13 mi away | 24/7 | — |
| 8 | Friendly Septic | 57 | 4.4★ (57) | Warwick, 13 mi away | 24/7 | — |
| 9 | Seven's Septic Services | 57 | 4.9★ (36) | Providence, 18 mi away | 24/7 | — |
| 10 | South County Septic & Excavation Services | 57 | 5.0★ (8) | South Kingstown, 8 mi away | 24/7 | — |
The 80 best septic service companies in Portsmouth, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Swansea, 9 mi away
58/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 150 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fall River, 10 mi away
58/100CR ScoreRanked #3 because of its Google rating and review volume: 4.9★ from 774 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Portsmouth
58/100CR ScoreRanked #4 because of its Google rating and trade focus: 3.9★ 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 New Bedford, 14 mi away
58/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Warwick, 13 mi away
58/100CR ScoreRanked #6 because of its Google rating and review volume: 4.9★ from 1,027 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in New Bedford, 13 mi away
58/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ 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 Warwick, 13 mi away
57/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.4★ from 57 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Providence, 18 mi away
57/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 36 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in South Kingstown, 8 mi away
57/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in New Bedford, 9 mi away
56/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 46 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Taunton, 25 mi away
56/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 54 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Somerset, 12 mi away
56/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hopkinton, 13 mi away
56/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.6★ from 36 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Seekonk, 16 mi away
55/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 68 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in South Kingstown, 15 mi away
55/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 44 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in East Providence, 17 mi away
55/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 73 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Coventry, 13 mi away
55/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 40 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairhaven, 19 mi away
55/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ 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 East Providence, 13 mi away
55/100CR ScoreRanked #20 because of its Google rating and trade focus: 3.7★ 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 Pawtucket, 20 mi away
55/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 77 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Providence, 19 mi away
54/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Providence, 13 mi away
54/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ 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 Providence, 16 mi away
54/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 43 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrington, 7 mi away
54/100CR ScoreRanked #25 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.
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 80 ranked septic service companies here; the rest are on their profiles.
Also serving Portsmouth
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 |
|---|---|---|
| Affordable Septic & Excavating llc | 5.0★ (1) | 20 mi |
| All Clean Inc | 3.0★ (2) | 21 mi |
| All Island Landscape Inc | In Portsmouth | |
| All Island Septic Services | 1.0★ (1) | In Portsmouth |
| AW Pump Pawtucket, RI - Sewer Pump & Well Tank Installation Service | 5.0★ (2) | 20 mi |
| Blue Line Septic | 5.0★ (2) | 23 mi |
| Brennan Construction Septic | 5.0★ (1) | 6 mi |
| Eco Tech Supply Inc | 5.0★ (1) | 16 mi |
| Haulin Oats Discount Septic Pumping | 5.0★ (1) | 13 mi |
| L.A. Patterson Inc. | 5.0★ (1) | 16 mi |
| LMD Septic Repair | 4.0★ (1) | 12 mi |
| MDC Excavation & Trucking | 5.0★ (2) | 16 mi |
| MHT Excavating | 5.0★ (2) | 24 mi |
| Monster-Vac | 5.0★ (2) | 5 mi |
| Peter's Excavating & Landscape Construction LLC | 5.0★ (2) | 3 mi |
| Russell Frade Enterprises, Inc. | 5.0★ (1) | 18 mi |
| South County Cesspool | 5.0★ (1) | 18 mi |
| Tech 1 Plumbing & Heating | 1.0★ (1) | 16 mi |
| United Rentals - Reliable Onsite Services | 5.0★ (2) | 24 mi |
| Wilcox Excavation & Development LLC. | 1.0★ (1) | 13 mi |
How we ranked Portsmouth septic service companies
We scored 80 Portsmouth 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 Portsmouth 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 Portsmouth: frequently asked questions
Who is the best septic service company in Portsmouth?
By CR Score, the highest-ranked septic service company in Portsmouth, RI is ProSeptic with a CR Score of 61/100. It has 5.0★ from 123 Google reviews. It is open 24/7. New England Sewer and Drain (#2) and Bass' Reddy Rooter (#3) follow. We ranked 80 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Portsmouth?
ContractorsRanked ranks 80 septic service companies serving Portsmouth, RI. 4 of them are based in Portsmouth; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Portsmouth are open 24/7?
21 ranked septic service companies in Portsmouth post 24/7 hours. The highest-ranked are ProSeptic (#1), New England Sewer and Drain (#2) and Bass' Reddy Rooter (#3). Village Septic Service (#11) also lists emergency service. Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Portsmouth work on weekends?
46 of 80 ranked septic service companies post Saturday hours and 25 post Sunday hours. The highest-ranked open Saturdays are ProSeptic (#1), New England Sewer and Drain (#2) and Bass' Reddy Rooter (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Portsmouth septic service companies have?
The median Google rating among 80 rated septic service companies in Portsmouth is 4.9★, with a median of 15 reviews. Bay State Sewage Disposal, Inc. Environmental Services Company has the most, 1,634 reviews, and ranks #33. 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 Portsmouth count in this ranking?
Yes, if they are within 25 mi of the Portsmouth 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 Portsmouth
- November 2026: CR Scores recalculated for 80 septic service companies serving Portsmouth.
More septic service companies and Portsmouth pages
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