61/100CR Score
Ranked #1 because of its Google rating and review volume: 4.7★ from 185 Google reviews, the most in Duncan.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Septic Service Companies in Duncan, BC (2026)
24 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Duncan: Baker Plumbing & Renovations, CR Score 61/100; 4.7★ from 185 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Vortech Plumbing & Drainage Inc, posts 24/7 hours; ranked #2 of 24.
- 2
Most-reviewed: Vortech Plumbing & Drainage Inc, 115 Google reviews at 4.6★, the most of 24 ranked after Baker Plumbing & Renovations; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
24 Duncan septic service companies are ranked here by CR Score, from ten published factors. 6 are open 24/7, 10 open Saturdays and 8 open Sundays, based on posted hours. The median Google rating is 4.8★ across 24 rated businesses.
Top 10 septic service companies in Duncan at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Baker Plumbing & Renovations | 61 | 4.7★ (185) | Duncan | 24/7 | Overall |
| 2 | Vortech Plumbing & Drainage Inc | 59 | 4.6★ (115) | Duncan | 24/7 | Emergencies, Most reviews |
| 3 | Shoreline Septic | 58 | 4.8★ (19) | North Cowichan, 19 km away | 24/7 | — |
| 4 | Affordable Septic Cowichan Valley | 58 | 5.0★ (9) | Duncan | Sat · Sun · Evenings | — |
| 5 | True Water Septic Limited | 58 | 5.0★ (47) | Victoria, 19 km away | Sat | — |
| 6 | All Out Septic, gulf islands | 58 | 4.8★ (10) | Salt Spring Island, 16 km away | 24/7 | — |
| 7 | Mike's Septic and Environmental Services Ltd | 57 | 5.0★ (4) | North Cowichan, 8 km away | 24/7 | — |
| 8 | Western Wastewater Systems | 56 | 4.7★ (26) | Victoria, 17 km away | Sat | — |
| 9 | SP Pump & Tanks - Septic Tank Pumpout, System / Pump Replacement - Duncan | 56 | 4.8★ (6) | Duncan | — | — |
| 10 | Save-On-Septic Services Ltd | 56 | 3.7★ (63) | Duncan | — | — |
The 24 best septic service companies in Duncan, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Duncan
59/100CR ScoreRanked #2 because of its Google rating and review volume: 4.6★ from 115 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in North Cowichan, 19 km away
58/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 19 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Duncan
58/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Victoria, 19 km away
58/100CR 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 Salt Spring Island, 16 km away
58/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 10 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, 8 km away
57/100CR ScoreRanked #7 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 Victoria, 17 km away
56/100CR ScoreRanked #8 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.
- 56/100CR Score
Ranked #9 because of its Google rating and trade focus: 4.8★ from 6 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Duncan
56/100CR ScoreRanked #10 because of its Google rating and trade focus: 3.7★ from 63 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Duncan
54/100CR ScoreRanked #11 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 Nanaimo, 39 km away
54/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.7★ from 35 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Langford, 37 km away
53/100CR ScoreRanked #13 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 North Cowichan, 27 km away
53/100CR 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 Salt Spring Island, 16 km away
53/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.8★ from 5 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in North Cowichan, 29 km away
53/100CR 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 8 of 10 factors; credentials and recency not yet collected.
#17 SK Septics Ltd
Based in Duncan
52/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ 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 Ladysmith, 33 km away
52/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.4★ from 14 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Nanaimo, 33 km away
52/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#20 Drain Dr. 2025
Based in Nanaimo, 38 km away
50/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ 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 Duncan
50/100CR ScoreRanked #21 because of its Google rating and review volume: 4.6★ from 19 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Nanaimo, 33 km away
47/100CR ScoreRanked #22 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 Salt Spring Island, 31 km away
43/100CR ScoreRanked #23 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.
Based in Nanaimo, 34 km away
43/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.4★ from 9 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Also serving Duncan
12 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 |
|---|---|---|
| Ace Bobcat Ltd | 3 km | |
| BC underground inc | 24 km | |
| Beals Septic | 29 km | |
| Big Digem Excavating Ltd | 5.0★ (1) | 30 km |
| CLS Tractor Service | 3.0★ (2) | In Duncan |
| Columbia Septic & Treatment | 15 km | |
| Complete Septic Solutions | 35 km | |
| Emco Waterworks | 5.0★ (2) | 40 km |
| Island Environmental Consulting | 40 km | |
| Lucas Drainage and sewer | 39 km | |
| New Water Septic | In Duncan | |
| SP Pump & Tanks - Septic Tank Services | 5.0★ (2) | 33 km |
How we ranked Duncan septic service companies
We scored 24 Duncan 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 Duncan 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 Duncan: frequently asked questions
Who is the best septic service company in Duncan?
By CR Score, the highest-ranked septic service company in Duncan, BC is Baker Plumbing & Renovations with a CR Score of 61/100. It has 4.7★ from 185 Google reviews. It is open 24/7. Vortech Plumbing & Drainage Inc (#2) and Shoreline Septic (#3) follow. We ranked 24 septic service companies on ten factors, last updated November 2, 2026.
How many septic service companies are there in Duncan?
ContractorsRanked ranks 24 septic service companies serving Duncan, BC. 8 of them are based in Duncan; the rest serve it from nearby towns. Another 12 within 40 km are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Duncan are open 24/7?
6 ranked septic service companies in Duncan post 24/7 hours. The highest-ranked are Baker Plumbing & Renovations (#1), Vortech Plumbing & Drainage Inc (#2) and Shoreline Septic (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Duncan work on weekends?
10 of 24 ranked septic service companies post Saturday hours and 8 post Sunday hours. The highest-ranked open Saturdays are Baker Plumbing & Renovations (#1), Vortech Plumbing & Drainage Inc (#2) and Shoreline Septic (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Duncan septic service companies have?
The median Google rating among 24 rated septic service companies in Duncan is 4.8★, with a median of 15 reviews. Baker Plumbing & Renovations has the most, 185 reviews, and ranks #1. 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 Duncan count in this ranking?
Yes, if they are within 40 km of the Duncan 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 Duncan
- November 2026: CR Scores recalculated for 24 septic service companies serving Duncan.
More septic service companies and Duncan pages
Septic service companies near Duncan
- Septic service companies in North Cowichan, BC24 ranked
- Septic service companies in Salt Spring Island, BC21 ranked
- Septic service companies in North Saanich, BC25 ranked
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- Septic service companies in Colwood, BC20 ranked
- Septic service companies in Nanaimo, BC22 ranked
- Septic service companies in Victoria, BC20 ranked
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- Septic service companies in Tsawwassen, BC38 ranked
- Septic service companies in Ladner, BC38 ranked
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