60/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 96 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 Nashua, NH (2026)
87 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Nashua: LaFrance Septic Services, CR Score 60/100; 4.9★ from 96 Google reviews; open 7 days a week.
- 3
Best for emergencies (open 24/7): Carl's Septic Systems and Services in New Hampshire, posts 24/7 hours; ranked #3 of 87.
- 13
Most-reviewed: New Era Plumbing & HVAC, 1,003 Google reviews at 4.9★, the most of 87 ranked; ranked #13.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
87 Nashua septic service companies are ranked here by CR Score, from ten published factors. 22 are open 24/7, 37 open Saturdays and 25 open Sundays, based on posted hours. The median Google rating is 4.9★ across 87 rated businesses.
Top 10 septic service companies in Nashua at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | LaFrance Septic Services | 60 | 4.9★ (96) | Salem, 11 mi away | Sat · Sun | Overall |
| 2 | Hamm Septic Services | 59 | 4.9★ (196) | Hudson, 5 mi away | — | — |
| 3 | Carl's Septic Systems and Services in New Hampshire | 58 | 4.8★ (118) | Manchester, 21 mi away | 24/7 | Emergencies |
| 4 | John's Sewer & Drain Cleaning | 58 | 4.9★ (796) | Woburn, 23 mi away | 24/7 | — |
| 5 | Curtis Septic | 57 | 5.0★ (21) | Leominster, 15 mi away | 24/7 | — |
| 6 | Garside Sewer & Septic Service LLC | 57 | 4.8★ (56) | Nashua | — | — |
| 7 | Curtis Septic Service | 57 | 4.7★ (77) | Stow, 23 mi away | 24/7 | — |
| 8 | East Coast Pipe Service | 57 | 5.0★ (26) | East Concord, 13 mi away | Sat · Sun | — |
| 9 | R M Ratta Corp | 57 | 4.9★ (204) | Fitchburg, 14 mi away | — | — |
| 10 | Chongris Engineering LLC | 57 | 5.0★ (16) | Andover, 16 mi away | 24/7 | — |
The 87 best septic service companies in Nashua, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Hudson, 5 mi away
59/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 196 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Manchester, 21 mi away
58/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 118 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Woburn, 23 mi away
58/100CR ScoreRanked #4 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 Leominster, 15 mi away
57/100CR ScoreRanked #5 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 Nashua
57/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 56 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Stow, 23 mi away
57/100CR ScoreRanked #7 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 East Concord, 13 mi away
57/100CR ScoreRanked #8 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 Fitchburg, 14 mi away
57/100CR ScoreRanked #9 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 Andover, 16 mi away
57/100CR ScoreRanked #10 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 Andover, 17 mi away
56/100CR ScoreRanked #11 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 Hudson, 5 mi away
56/100CR ScoreRanked #12 because of its Google rating and review volume: 4.9★ from 380 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dracut, 10 mi away
56/100CR ScoreRanked #13 because of its Google rating and review volume: 4.9★ from 1,003 Google reviews, the most in Nashua.
Based on 8 of 10 factors; credentials and recency not yet collected.
#14 Waste Warriors
Based in South Boston, 22 mi away
56/100CR ScoreRanked #14 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 Westford, 10 mi away
56/100CR ScoreRanked #15 because of its Google rating and review volume: 5.0★ from 111 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Londonderry, 11 mi away
56/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 67 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#17 Wayne's Drains
Based in Burlington, 22 mi away
55/100CR ScoreRanked #17 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 Bedford, 13 mi away
55/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.8★ from 83 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#19 Kent Septic LLC
Based in Manchester, 21 mi away
55/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.8★ from 287 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Westford, 15 mi away
55/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.4★ from 20 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Windham, 8 mi away
55/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.1★ from 20 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Fitchburg, 14 mi away
54/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
#23 Rooter Man
Based in Lawrence, 17 mi away
54/100CR ScoreRanked #23 because of its Google rating and review volume: 5.0★ from 118 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Windham, 11 mi away
54/100CR ScoreRanked #24 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.
#25 Sewer Surgeons
Based in Derry, 19 mi away
54/100CR ScoreRanked #25 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.
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 87 ranked septic service companies here; the rest are on their profiles.
Also serving Nashua
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 |
|---|---|---|
| A-Bee Septic LLC | 5.0★ (1) | 6 mi |
| ABC Plumbing Drain Sewer Clng | 5.0★ (1) | 22 mi |
| Al's Septic & Excavation | 3.0★ (2) | 11 mi |
| Biolex Septic Services | In Nashua | |
| Borough Sewer Services | 4.0★ (1) | 8 mi |
| Charbonneau Septic Systems & Excavating Service | In Nashua | |
| DoneRight Septic Service | 11 mi | |
| E A Comeau Septic | 5.0★ (1) | 22 mi |
| G. Nichols Construction Co., Inc | 5.0★ (2) | 21 mi |
| Land Engineering & Envrmntl | 5.0★ (2) | 8 mi |
| Liberty Septic Services, LLC | 5.0★ (1) | 22 mi |
| Milltown Plumbing, Heating, Air Conditioning, Drain Cleaning & Electrical | In Nashua | |
| Peabody Supply Co | 4.7★ (24) | In Nashua |
| Quick Fix Septic | 11 mi | |
| QUIRK Real Estate Sales, Development and Construction | 3.0★ (2) | 18 mi |
| Sandford Surveying and Engineering, Inc. | 5.0★ (1) | 15 mi |
| Sewer Works | 5.0★ (2) | 4 mi |
| Slate Corporation | 5.0★ (1) | 18 mi |
| Stewart Septic Services | 3.0★ (2) | 13 mi |
| Title 5 Inspection | 5.0★ (1) | 4 mi |
How we ranked Nashua septic service companies
We scored 87 Nashua 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 Nashua 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 Nashua: frequently asked questions
Who is the best septic service company in Nashua?
By CR Score, the highest-ranked septic service company in Nashua, NH is LaFrance Septic Services with a CR Score of 60/100. It has 4.9★ from 96 Google reviews. It is open 7 days a week. Hamm Septic Services (#2) and Carl's Septic Systems and Services in New Hampshire (#3) follow. We ranked 87 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Nashua?
ContractorsRanked ranks 87 septic service companies serving Nashua, NH. 2 of them are based in Nashua; 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 Nashua are open 24/7?
22 ranked septic service companies in Nashua post 24/7 hours. The highest-ranked are Carl's Septic Systems and Services in New Hampshire (#3), John's Sewer & Drain Cleaning (#4) and Curtis Septic (#5). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Nashua work on weekends?
37 of 87 ranked septic service companies post Saturday hours and 25 post Sunday hours. The highest-ranked open Saturdays are LaFrance Septic Services (#1), Carl's Septic Systems and Services in New Hampshire (#3) and John's Sewer & Drain Cleaning (#4). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Nashua septic service companies have?
The median Google rating among 87 rated septic service companies in Nashua is 4.9★, with a median of 20 reviews. New Era Plumbing & HVAC has the most, 1,003 reviews, and ranks #13. 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 Nashua count in this ranking?
Yes, if they are within 25 mi of the Nashua 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 Nashua
- November 2026: CR Scores recalculated for 87 septic service companies serving Nashua.
- November 2026: 1 duplicate listing merged.
More septic service companies and Nashua pages
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