63/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.7★ from 157 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Septic Service Companies in Ottawa, ON (2026)
48 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Ottawa: Sanivac, CR Score 63/100; 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 48.
- 2
Most-reviewed: Mr. Rooter Plumbing of Ottawa, 1,773 Google reviews at 4.7★, the most of 48 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
48 Ottawa septic service companies are ranked here by CR Score, from ten published factors. 9 are open 24/7, 16 open Saturdays and 12 open Sundays, based on posted hours. The median Google rating is 4.9★ across 48 rated businesses.
Top 10 septic service companies in Ottawa at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Sanivac | 63 | 4.7★ (157) | Ottawa | 24/7 | Overall |
| 2 | Mr. Rooter Plumbing of Ottawa | 61 | 4.7★ (1,773) | Ottawa | 24/7 | Emergencies, Most reviews |
| 3 | Devish Design Services Inc. | 60 | 5.0★ (16) | Ottawa | 24/7 | — |
| 4 | Ottawa Septic Systems | 59 | 4.7★ (15) | Ottawa | 24/7 | — |
| 5 | Brazeau Sanitation | 59 | 4.9★ (72) | Ottawa | Sat | — |
| 6 | Septique DD | 59 | 4.9★ (147) | Ottawa | — | — |
| 7 | Clean Stream Plumbing | 58 | 5.0★ (107) | Ottawa | — | — |
| 8 | HOME & SEPTIC INSPECTIONS OTTAWA | 58 | 4.7★ (24) | Ottawa | Sat · Sun · Evenings | — |
| 9 | Ottawa Septic Inspections | 58 | 4.9★ (17) | Ottawa | Sat · Sun · Evenings | — |
| 10 | Valley Wide Septic Tank Pumping Service | 58 | 4.9★ (27) | Ottawa | — | — |
The 48 best septic service companies in Ottawa, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Ottawa
61/100CR ScoreRanked #2 because of its Google rating and review volume: 4.7★ from 1,773 Google reviews, the most in Ottawa.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa
60/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa
59/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.7★ from 15 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa
59/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 72 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#6 Septique DD
Based in Ottawa
59/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 147 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa
58/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 107 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa
58/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.7★ from 24 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa
58/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ 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 Ottawa
58/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 27 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Ottawa
58/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.5★ 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 Ottawa
57/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 52 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa
57/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 53 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa
56/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
#15 Aqua Pompes Plus
Based in Ottawa
56/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ 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 Ottawa
56/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ 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 Ottawa
56/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 35 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa
55/100CR ScoreRanked #18 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 Ottawa
55/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.8★ from 28 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa
55/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.4★ 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 Ottawa
55/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.7★ from 25 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#22 JDS Earthworks
Based in Ottawa
55/100CR ScoreRanked #22 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.
#23 Mr. Septic
Based in Ottawa
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 Ottawa
54/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa
54/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.4★ from 16 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
All 48 septic service companies
#1 to #25 are shown in full above. Here are #26 to #48, in CR Score order; each links to its profile.
Also serving Ottawa
20 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 | In Ottawa | |
| Brown Ken H Excavating Ltd | 3.6★ (12) | In Ottawa |
| Capital Septic Solutions | 5.0★ (2) | In Ottawa |
| Cleanflow Ottawa Septic | 5.0★ (1) | In Ottawa |
| Colron Excavating | 5.0★ (45) | In Ottawa |
| CP & Son - General Contractors | 4.9★ (35) | In Ottawa |
| Crepin Gerry Cartage | 3.8★ (25) | In Ottawa |
| Ecoflex cleaning Services - Ottawa and Gatineau | 5.0★ (12) | In Ottawa |
| Environmental Plumbing & Drain Cleaning | 4.9★ (71) | In Ottawa |
| Honeywell Works Inc | 5.0★ (9) | In Ottawa |
| MASS Excavation & Demolition | 3.2★ (9) | In Ottawa |
| Ottawa Septic Systems | 5.0★ (2) | In Ottawa |
| Plumbing Services Ottawa | 5.0★ (3) | In Ottawa |
| Poirier Waste- TransVac Group | 4.9★ (22) | In Ottawa |
| Proactive Septic Solutions | 5.0★ (2) | In Ottawa |
| Quast Excavating | 4.9★ (13) | In Ottawa |
| Rabb Construction Ltd | 4.5★ (28) | In Ottawa |
| Scooter Rooter Inc. | 4.4★ (48) | In Ottawa |
| Septic Service Ottawa | In Ottawa | |
| WD Dow Plumbing | 4.8★ (26) | In Ottawa |
How we ranked Ottawa septic service companies
We scored 48 Ottawa 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 Ottawa 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 Ottawa: frequently asked questions
Who is the best septic service company in Ottawa?
By CR Score, the highest-ranked septic service company in Ottawa, ON is Sanivac with a CR Score of 63/100. 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 48 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Ottawa?
ContractorsRanked ranks 48 septic service companies serving Ottawa, ON. 34 of them are based in Ottawa; the rest serve it from nearby towns. Another 20 within 40 km are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Ottawa are open 24/7?
9 ranked septic service companies in Ottawa 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 Ottawa work on weekends?
16 of 48 ranked septic service companies post Saturday hours and 12 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 Ottawa septic service companies have?
The median Google rating among 48 rated septic service companies in Ottawa is 4.9★, with a median of 25 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 Ottawa count in this ranking?
Yes, if they are within 40 km of the Ottawa 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 Ottawa
- November 2026: CR Scores recalculated for 48 septic service companies serving Ottawa.
More septic service companies and Ottawa pages
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