59/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 60 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 Harwich, MA (2026)
31 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Harwich: Cape Drain & Rooter, CR Score 59/100; 5.0★ from 60 Google reviews; open 24/7.
- 3
Best for emergencies (open 24/7): JMB Septic Service, posts 24/7 hours; ranked #3 of 31.
- 20
Most-reviewed: Master Tech Plumbing Inc., 1,474 Google reviews at 4.9★, the most of 31 ranked; ranked #20.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
31 Harwich septic service companies are ranked here by CR Score, from ten published factors. 7 are open 24/7, 14 open Saturdays and 10 open Sundays, based on posted hours. The median Google rating is 5.0★ across 31 rated businesses.
Most of this list also appears on the Septic service companies in Yarmouth ranking. See Septic service companies in Yarmouth
Top 10 septic service companies in Harwich at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Cape Drain & Rooter | 59 | 5.0★ (60) | Middleborough, 14 mi away | 24/7 | Overall |
| 2 | RV Pump Service | 58 | 5.0★ (311) | Mashpee, 22 mi away | — | — |
| 3 | JMB Septic Service | 58 | 5.0★ (127) | Hyannis, 12 mi away | 24/7 | Emergencies |
| 4 | Cape Cod Septic Services | 58 | 4.2★ (37) | West Yarmouth, 9 mi away | 24/7 | — |
| 5 | Robert Childs Inc. | 57 | 4.4★ (82) | Barnstable, 3 mi away | Sat | — |
| 6 | Graci Septic Solutions | 57 | 4.9★ (20) | Mashpee, 14 mi away | 24/7 | — |
| 7 | Shore Things Environmental, LLC | 57 | 5.0★ (34) | Harwich | — | — |
| 8 | Wall Septic Services | 56 | 4.4★ (13) | Barnstable, 1 mi away | — | — |
| 9 | Ready Rooter Inc | 56 | 4.5★ (45) | Marstons Mills, 21 mi away | 24/7 | — |
| 10 | Debarros Septic | 55 | 5.0★ (22) | Marstons Mills, 16 mi away | Sat · Sun | — |
The 31 best septic service companies in Harwich, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Mashpee, 22 mi away
58/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 311 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Hyannis, 12 mi away
58/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 127 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in West Yarmouth, 9 mi away
58/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.2★ from 37 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barnstable, 3 mi away
57/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.4★ from 82 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mashpee, 14 mi away
57/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ 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 Harwich
57/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 34 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barnstable, 1 mi away
56/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.4★ from 13 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Marstons Mills, 21 mi away
56/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.5★ from 45 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#10 Debarros Septic
Based in Marstons Mills, 16 mi away
55/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barnstable, 19 mi away
54/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mashpee, 22 mi away
54/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.7★ 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 Barnstable, 5 mi away
54/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Yarmouth, 7 mi away
53/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Barnstable, 14 mi away
53/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Barnstable, 6 mi away
53/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Harwich
52/100CR ScoreRanked #17 because of its Google rating and review volume: 4.4★ from 126 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Middleborough, 22 mi away
52/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Mashpee, 20 mi away
51/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 8 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 Falmouth, 24 mi away
51/100CR ScoreRanked #20 because of its Google rating and review volume: 4.9★ from 1,474 Google reviews, the most in Harwich.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Middleborough, 14 mi away
51/100CR ScoreRanked #21 because of its Google rating and trade focus: 3.7★ 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 Harwich
50/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.2★ from 37 Google reviews, listed on Google as “Mulch supplier”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barnstable, 1 mi away
50/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Concrete contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Canton, 17 mi away
50/100CR ScoreRanked #24 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 Barnstable, 4 mi away
48/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Solar energy equipment supplier”.
Based on 8 of 10 factors; credentials and recency not yet collected.
How we ranked Harwich septic service companies
We scored 31 Harwich 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 Harwich 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 Harwich: frequently asked questions
Who is the best septic service company in Harwich?
By CR Score, the highest-ranked septic service company in Harwich, MA is Cape Drain & Rooter with a CR Score of 59/100. It has 5.0★ from 60 Google reviews. It is open 24/7. RV Pump Service (#2) and JMB Septic Service (#3) follow. We ranked 31 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Harwich?
ContractorsRanked ranks 31 septic service companies serving Harwich, MA. 3 of them are based in Harwich; the rest serve it from nearby towns. Counts are as of November 2026.
Which septic service companies in Harwich are open 24/7?
7 ranked septic service companies in Harwich post 24/7 hours. The highest-ranked are Cape Drain & Rooter (#1), JMB Septic Service (#3) and Cape Cod Septic Services (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Harwich work on weekends?
14 of 31 ranked septic service companies post Saturday hours and 10 post Sunday hours. The highest-ranked open Saturdays are Cape Drain & Rooter (#1), JMB Septic Service (#3) and Cape Cod Septic Services (#4). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Harwich septic service companies have?
The median Google rating among 31 rated septic service companies in Harwich is 5.0★, with a median of 15 reviews. Master Tech Plumbing Inc. has the most, 1,474 reviews, and ranks #20. 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 Harwich count in this ranking?
Yes, if they are within 25 mi of the Harwich 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 Harwich
- November 2026: CR Scores recalculated for 31 septic service companies serving Harwich.
- November 2026: 1 duplicate listing merged.
More septic service companies and Harwich pages
Septic service companies near Harwich
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