Best drainage service companies in the Greater Toronto Area
These are the GTA businesses where drainage work (weeping tile, sump pumps, drain clearing, foundation waterproofing) is the core trade, not a side offering, ranked using our methodology.
General contractors who happen to do drainage as part of larger renovations are covered separately on our best renovation contractor overall page. This list only includes businesses where drainage and waterproofing are the primary trade.
Picks are ranked by score and relevance to drainage service, so a lower overall score can rank higher here.
At a glance
| # | Business | Score | Rating | From | Best for |
|---|---|---|---|---|---|
| 1 | Direct Basement Waterproofing | 95 | 5 (317) | — | All-round basement waterproofing |
| 2 | Tornado Plumbing & Drains | 93 | 5 (136) | — | Emergency drain & sewer plumbing |
| 3 | Stellar Work Construction | 87 | 4.9 (47) | — | Detailed waterproofing & concrete drainage |
| 4 | Utilicon Services | 69 | 5 (3) | — | Drain & grease trap cleaning |
| 5 | Basement Waterproofing Toronto - Foundation Crack Repair | 57 | 4 (2) | — | Long-warranty foundation crack repair |
1. Direct Basement Waterproofing
5 (317 reviews)score 95/100
Direct Basement Waterproofing posts the highest composite score on this list, built on 317 reviews at a perfect 5-star average. Customers describe a team (Terry, Jeff, Max, Rus) that diagnoses the problem honestly, sticks to the quoted schedule and budget, and leaves the site clean, covering everything from exterior and interior waterproofing to weeping tile and sump pumps.
- Fast response and turnaround on jobs
- Professional crews who communicate throughout the project
- Transparent pricing without upselling
- On-time, on-budget completion
Google-verified317 Google reviewssince 1995
Services: basement renovation, water damage restoration service, waterproofing service, drainage service
2. Tornado Plumbing & Drains
5 (136 reviews)score 93/100
Tornado Plumbing & Drains combines a near-perfect rating across 136 reviews with a reputation for showing up fast in an emergency. Repeat customers single out Serhiy for solving urgent leaks, clearing root-clogged drains, and installing backwater valves, and the company also handles the rebate paperwork that comes with those jobs.
- Emergency response within hours
- Master plumber credentials with a repeat customer base
- Honest diagnosis and transparent pricing from $180 for a camera inspection
- Assists with city rebate paperwork
Google-verified136 Google reviews
Services: emergency repair, drainage service, bathroom renovation, flooring contractor
3. Stellar Work Construction
4.9 (47 reviews)score 87/100
Stellar Work Construction earns strong marks across 47 reviews for solving long-standing basement moisture problems with the same crew handling everything from the itemized quote through to completion. Reviewers point to Vlad's team for detailed proposals with renderings and for keeping projects on schedule and on budget.
- Itemized estimates with renderings before work starts
- Same crew from quote to completion
- Resolves chronic basement moisture and foundation issues
- Clean worksite and steady communication
Google-verified47 Google reviewsOver 10 years of experience in waterproofing, underpinning, and construction
Services: interior construction contractor, waterproofing service, kitchen renovation, drainage service
4. Utilicon Services
5 (3 reviews)score 69/100
Utilicon Services has a small review base so far, but all three reviewers report punctual arrival, clear updates, and efficient work on drain and grease trap cleaning jobs. Worth a look if you want a straightforward, no-fuss cleaning job, though the low review count means it's early days for a full track record.
- Punctual arrival
- Clear communication throughout the job
Watch out: Only 3 reviews on record, so there's limited history to judge consistency.
Google-verified3 Google reviews
Services: custom carpentry finishing, drainage service, flooring contractor, interior construction contractor
5. Basement Waterproofing Toronto - Foundation Crack Repair
4 (2 reviews)score 57/100
Basement Waterproofing Toronto has operated since 1991 and backs its sealing work with a 25-year warranty, with a 5-star review describing a detailed assessment and multiple solution options from Toni. Reviews are sparse and the most recent one dates back several years, so treat this as a lead worth vetting further rather than a sure thing.
- 25-year warranty on sealing work
- Detailed options presented before starting
Watch out: Only 2 reviews on file and the most recent dates back years, so recent performance is hard to confirm.
Google-verified2 Google reviewssince 1991
Services: basement renovation, water damage restoration service, drainage service, waterproofing service
How this ranking was calculated
| Signal | Weight |
|---|---|
| Review sentiment | 28% |
| Google rating | 26% |
| Review volume | 20% |
| Profile completeness | 16% |
| Review recency | 10% |
Ranking data checked 2026-09-08 · Full methodology ›
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Guides before you choose
- Getting your basement ready before a GTA winter
A seasonal checklist for basement drainage and waterproofing before freeze-thaw cycles and spring melt put GTA foundations to the test.