57/100CR Score
Ranked #1 because of its Google rating and review volume: 4.9★ from 53 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Septic Service Companies in Oak Bay, BC (2026)
21 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Oak Bay: Pacific Group Developments, CR Score 57/100; 4.9★ from 53 Google reviews; open 24/7.
- 3
Best for emergencies (open 24/7): Mr. Rooter Plumbing of Victoria, posts 24/7 hours; ranked #3 of 21.
- 3
Most-reviewed: Mr. Rooter Plumbing of Victoria, 195 Google reviews at 4.1★, the most of 21 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
21 Oak Bay septic service companies are ranked here by CR Score, from ten published factors. 3 are open 24/7, 7 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.7★ across 21 rated businesses.
Top 10 septic service companies in Oak Bay at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Pacific Group Developments | 57 | 4.9★ (53) | Victoria, 6 km away | 24/7 | Overall |
| 2 | BC Underground Inc Septic and Excavation | 57 | 5.0★ (33) | Victoria, 7 km away | — | — |
| 3 | Mr. Rooter Plumbing of Victoria | 56 | 4.1★ (195) | Victoria, 6 km away | 24/7 | Emergencies, Most reviews |
| 4 | Canadian Sewage Solutions Inc | 56 | 4.7★ (65) | Langford, 15 km away | — | — |
| 5 | True Water Septic Limited | 55 | 5.0★ (47) | Victoria, 38 km away | Sat | — |
| 6 | Western Wastewater Systems | 53 | 4.7★ (26) | Victoria, 31 km away | Sat | — |
| 7 | JRSC Ltd. | 53 | 4.1★ (14) | Victoria, 7 km away | — | — |
| 8 | Mike's Septic and Environmental Services Ltd. | 52 | 5.0★ (23) | North Cowichan, 30 km away | — | — |
| 9 | Mike's Septic and Environmental Services Ltd | 51 | 5.0★ (4) | North Cowichan, 39 km away | 24/7 | — |
| 10 | Arrow Septic Tank | 50 | 3.6★ (24) | Port Angeles, 39 km away | — | — |
The 21 best septic service companies in Oak Bay, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Victoria, 7 km away
57/100CR ScoreRanked #2 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 Victoria, 6 km away
56/100CR ScoreRanked #3 because of its Google rating and review volume: 4.1★ from 195 Google reviews, the most in Oak Bay.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Langford, 15 km away
56/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.7★ from 65 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Victoria, 38 km away
55/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 47 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Victoria, 31 km away
53/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.7★ from 26 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#7 JRSC Ltd.
Based in Victoria, 7 km away
53/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.1★ 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 North Cowichan, 30 km away
52/100CR ScoreRanked #8 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 North Cowichan, 39 km away
51/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Port Angeles, 39 km away
50/100CR ScoreRanked #10 because of its Google rating and trade focus: 3.6★ from 24 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Victoria, 15 km away
49/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Drainage service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Victoria, 16 km away
49/100CR ScoreRanked #12 because of its Google rating and trade focus: 2.3★ 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 Nanaimo, 25 km away
48/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Demolition contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Port Angeles, 39 km away
47/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.7★ from 19 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Port Angeles, 40 km away
47/100CR 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 8 of 10 factors; credentials and recency not yet collected.
Based in Port Angeles, 38 km away
47/100CR ScoreRanked #16 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 Port Angeles, 39 km away
46/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Port Angeles, 38 km away
46/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.6★ from 20 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Port Angeles, 40 km away
45/100CR ScoreRanked #19 because of its Google rating and trade focus: 3.4★ from 5 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Port Angeles, 38 km away
45/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.7★ from 13 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Salt Spring Island, 39 km away
41/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.5★ from 8 Google reviews, listed on Google as “Concrete contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Also serving Oak Bay
10 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 |
|---|---|---|
| BC underground inc | 23 km | |
| Big Digem Excavating Ltd | 5.0★ (1) | 40 km |
| Complete Septic Solutions | 17 km | |
| Emco Waterworks | 5.0★ (2) | 16 km |
| Island Environmental Consulting | 16 km | |
| Lucas Drainage and sewer | 15 km | |
| Mr. Baker's Plumbing | 19 km | |
| SP Pump & Tanks - Septic Tank Services | 5.0★ (2) | 18 km |
| WCOWMA Onsite Wastewater Management Association | 3.0★ (2) | 7 km |
| Western Wastewater Systems | 5.0★ (2) | 16 km |
How we ranked Oak Bay septic service companies
We scored 21 Oak Bay 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 2, 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 Oak Bay 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 Oak Bay: frequently asked questions
Who is the best septic service company in Oak Bay?
By CR Score, the highest-ranked septic service company in Oak Bay, BC is Pacific Group Developments with a CR Score of 57/100. It has 4.9★ from 53 Google reviews. It is open 24/7. BC Underground Inc Septic and Excavation (#2) and Mr. Rooter Plumbing of Victoria (#3) follow. We ranked 21 septic service companies on ten factors, last updated November 2, 2026.
How many septic service companies are there in Oak Bay?
ContractorsRanked ranks 21 septic service companies serving Oak Bay, BC. Another 10 within 40 km are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Oak Bay are open 24/7?
3 ranked septic service companies in Oak Bay post 24/7 hours. The highest-ranked are Pacific Group Developments (#1), Mr. Rooter Plumbing of Victoria (#3) and Mike's Septic and Environmental Services Ltd (#9). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Oak Bay work on weekends?
7 of 21 ranked septic service companies post Saturday hours and 4 post Sunday hours. The highest-ranked open Saturdays are Pacific Group Developments (#1), Mr. Rooter Plumbing of Victoria (#3) and True Water Septic Limited (#5). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Oak Bay septic service companies have?
The median Google rating among 21 rated septic service companies in Oak Bay is 4.7★, with a median of 14 reviews. Mr. Rooter Plumbing of Victoria has the most, 195 reviews, and ranks #3. 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 Oak Bay count in this ranking?
Yes, if they are within 40 km of the Oak Bay 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 Oak Bay
- November 2026: CR Scores recalculated for 21 septic service companies serving Oak Bay.
More septic service companies and Oak Bay pages
Septic service companies near Oak Bay
- Septic service companies in Victoria, BC20 ranked
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- Septic service companies in Langford, BC24 ranked
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- Septic service companies in Tsawwassen, BC38 ranked
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