59/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.7★ from 157 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in Nepean, ON (2026)
38 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Nepean: Sanivac, CR Score 59/100; 4.7★ from 157 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Mr. Rooter Plumbing of Ottawa, posts 24/7 hours; ranked #2 of 38.
- 2
Most-reviewed: Mr. Rooter Plumbing of Ottawa, 1,773 Google reviews at 4.7★, the most of 38 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
38 Nepean septic service companies are ranked here by CR Score, from ten published factors. 9 are open 24/7, 11 open Saturdays and 11 open Sundays, based on posted hours. The median Google rating is 4.9★ across 38 rated businesses.
Top 10 septic service companies in Nepean at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Sanivac | 59 | 4.7★ (157) | Ottawa, 22 km away | 24/7 | Overall |
| 2 | Mr. Rooter Plumbing of Ottawa | 59 | 4.7★ (1,773) | Ottawa, 11 km away | 24/7 | Emergencies, Most reviews |
| 3 | Devish Design Services Inc. | 58 | 5.0★ (16) | Ottawa, 12 km away | 24/7 | — |
| 4 | Clean Stream Plumbing | 57 | 5.0★ (107) | Ottawa, 11 km away | — | — |
| 5 | Dr. Pipe Drain and Plumbing | 56 | 5.0★ (65) | Nepean | 24/7 | — |
| 6 | Boyd Bros Concrete | 55 | 4.9★ (27) | Nepean | — | — |
| 7 | Ottawa Septic Systems | 54 | 4.7★ (15) | Ottawa, 35 km away | 24/7 | — |
| 8 | Devereaux and Son Septic Pumping Ltd. | 53 | 4.9★ (53) | Ottawa, 20 km away | — | — |
| 9 | Proactive Septic Solutions | 53 | 5.0★ (12) | Ottawa, 3 km away | — | — |
| 10 | Septique DD | 53 | 4.9★ (147) | Ottawa, 34 km away | — | — |
The 38 best septic service companies in Nepean, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Ottawa, 11 km away
59/100CR ScoreRanked #2 because of its Google rating and review volume: 4.7★ from 1,773 Google reviews, the most in Nepean.
Based in Ottawa, 12 km away
58/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Septic system service”.
Based in Ottawa, 11 km away
57/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 107 Google reviews, listed on Google as “Septic system service”.
Based in Nepean
56/100CR ScoreRanked #5 because of its Google rating and review volume: 5.0★ from 65 Google reviews.
Based in Nepean
55/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 27 Google reviews, listed on Google as “Septic system service”.
Based in Ottawa, 35 km away
54/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.7★ from 15 Google reviews, listed on Google as “Septic system service”.
Based in Ottawa, 20 km away
53/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 53 Google reviews, listed on Google as “Septic system service”.
Based in Ottawa, 3 km away
53/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Septic system service”.
#10 Septique DD
Based in Ottawa, 34 km away
53/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 147 Google reviews, listed on Google as “Septic system service”.
Based in Clarence-Rockland, 22 km away
53/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.3★ from 88 Google reviews, listed on Google as “Plumber”.
Based in Ottawa, 32 km away
53/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 17 Google reviews, listed on Google as “Septic system service”.
Based in Nepean
53/100CR ScoreRanked #13 because of its Google rating and availability: 5.0★ from 13 Google reviews, open 24/7.
#14 Mr. Septic
Based in Ottawa, 11 km away
53/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Septic system service”.
Based in Ottawa, 19 km away
52/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.8★ from 28 Google reviews, listed on Google as “Septic system service”.
Based in Ottawa, 8 km away
52/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Septic system service”.
Based in Nepean
52/100CR ScoreRanked #17 because of its Google rating and availability: 4.6★ from 11 Google reviews, open 24/7.
#18 Sanivac
Based in Kanata, 15 km away
52/100CR ScoreRanked #18 because of its Google rating and availability: 4.9★ from 34 Google reviews, open 24/7.
Based in Ottawa, 29 km away
52/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 52 Google reviews, listed on Google as “Septic system service”.
Based in Ottawa, 8 km away
51/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.1★ from 9 Google reviews, listed on Google as “Septic system service”.
Based in Ottawa, 22 km away
51/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.7★ from 25 Google reviews, listed on Google as “Septic system service”.
#22 Aqua Pompes Plus
Based in Ottawa, 30 km away
51/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 37 Google reviews, listed on Google as “Septic system service”.
#23 JDS Earthworks
Based in Ottawa, 23 km away
51/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Septic system service”.
Based in Ottawa, 31 km away
50/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.4★ from 46 Google reviews, listed on Google as “Septic system service”.
Based in Ottawa, 37 km away
50/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 37 Google reviews, listed on Google as “Septic system service”.
All 38 septic service companies
#1 to #25 are shown in full above. Here are #26 to #38, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Daniel Excavating | 50 | 5.0★ (4) | 13 km |
| 27 | Ottawa Foundation Repair Contractor | 50 | 4.9★ (92) | 8 km |
| 28 | Rideau Valley Septic Services | 49 | 4.3★ (9) | 22 km |
| 29 | Savigne Excavation and Septic | 49 | 5.0★ (7) | 26 km |
| 30 | Embrun Sanitation Services | 49 | 4.4★ (16) | 33 km |
| 31 | Green Valley Environmental | 48 | 2.8★ (24) | 17 km |
| 32 | Southpaw Contracting | 48 | 4.4★ (28) | In Nepean |
| 33 | Environnements & Pompages Cadieux Inc | 48 | 4.6★ (10) | 34 km |
| 34 | Gascon service septique | 47 | 3.4★ (60) | 33 km |
| 35 | Ken White Construction Ltd. | 46 | 4.9★ (38) | 25 km |
| 36 | Constructelle | 44 | 4.9★ (50) | 39 km |
| 37 | Deep Ground LTD. | 43 | 5.0★ (7) | 24 km |
| 38 | Dubuc Excavation Inc | L'Ange-Gardien | 41 | 3.8★ (4) | 31 km |
Also serving Nepean
15 more septic service companies within 40 km 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-One Pumping Inc | 20 km | |
| Aprilaire Humidifiers | In Nepean | |
| Brocc Excavation LTD | 5.0★ (2) | 31 km |
| Camera Septique | 5.0★ (1) | In Nepean |
| Capital Septic Solutions | 5.0★ (2) | 2 km |
| Cleanflow Ottawa Septic | 5.0★ (1) | 14 km |
| Design Septique JLF Julie Fauvelle | 5.0★ (1) | In Nepean |
| Emmerson Excavation & Drilling | 5.0★ (2) | 21 km |
| Emmerson Excavation & Drilling | 29 km | |
| Guy Courchesne Excavation | 5.0★ (1) | 21 km |
| Proactive Septic Solutions | 5.0★ (2) | 19 km |
| Sanivac | 4.9★ (34) | In Nepean |
| Septic Service Ottawa | 23 km | |
| Soluo Outaouais | 5.0★ (1) | 24 km |
| Waste H2O Service Inc. | 35 km |
How we ranked Nepean septic service companies
We scored 38 Nepean 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 Nepean 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 Nepean: frequently asked questions
Who is the best septic service company in Nepean?
By CR Score, the highest-ranked septic service company in Nepean, ON is Sanivac with a CR Score of 59/100. It has 4.7★ from 157 Google reviews. It is open 24/7. Mr. Rooter Plumbing of Ottawa (#2) and Devish Design Services Inc. (#3) follow. We ranked 38 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Nepean?
ContractorsRanked ranks 38 septic service companies serving Nepean, ON. 5 of them are based in Nepean; the rest serve it from nearby towns. Another 15 within 40 km are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Nepean are open 24/7?
9 ranked septic service companies in Nepean post 24/7 hours. The highest-ranked are Sanivac (#1), Mr. Rooter Plumbing of Ottawa (#2) and Devish Design Services Inc. (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Nepean work on weekends?
11 of 38 ranked septic service companies post Saturday hours and 11 post Sunday hours. The highest-ranked open Saturdays are Sanivac (#1), Mr. Rooter Plumbing of Ottawa (#2) and Devish Design Services Inc. (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Nepean septic service companies have?
The median Google rating among 38 rated septic service companies in Nepean is 4.9★, with a median of 26 reviews. Mr. Rooter Plumbing of Ottawa has the most, 1,773 reviews, and ranks #2. 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 Nepean count in this ranking?
Yes, if they are within 40 km of the Nepean city centre, 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 Nepean
- November 2026: CR Scores recalculated for 38 septic service companies serving Nepean.
More septic service companies and Nepean pages
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