Top 50 of 668 plumbers, in emergency orderUpdated 0 paid placements in this rankingHow we rank
25 of the 50 plumbers on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.
#1 for emergency plumbing in Oakville: Mr Rooter Plumbing of Mississauga ON, open 24/7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
| Rank | Business | CR Score | Google rating | Based in | Hours |
|---|---|---|---|---|---|
| 1 | Mr Rooter Plumbing of Mississauga ON | 63 | 4.8★ (2,362) | Mississauga, 14 km away | 24/7 |
| 2 | John The Plumber | 62 | 4.8★ (280) | Oakville | 24/7 |
| 3 | Harb Plumbing | 62 | 4.9★ (577) | Mississauga, 9 km away | 24/7 |
| 4 | Reliance Heating, Air Conditioning & Plumbing | 62 | 4.8★ (27,515) | Burlington, 13 km away | 24/7 |
| 5 | Drain 1 Plumbers Oakville | 62 | 5.0★ (120) | Oakville | 24/7 |
| 6 | ProResults Plumbing Oakville – Residential & Commercial Services | 62 | 5.0★ (117) | Oakville | 24/7 |
| 7 | 17 Plumbing & Construction Design Ltd | 62 | 5.0★ (115) | Oakville | 24/7 |
| 8 | Atre Drain and Plumbing | 62 | 5.0★ (108) | Oakville | 24/7 |
| 9 | Rooter-Man Plumbing & Waterproofing Oakville | 62 | 4.7★ (178) | Oakville | 24/7 |
| 10 | Delex Plumbing and Drains | 61 | 5.0★ (371) | Milton, 13 km away | 24/7 |
24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.
#1Mr Rooter Plumbing of Mississauga ON
Open 24/7 · 4.8 from 2,362 Google reviews
Open 24/7 · 4.8 from 280 Google reviews
Open 24/7 · 4.9 from 577 Google reviews
#4Reliance Heating, Air Conditioning & Plumbing
Open 24/7 · 4.8 from 27,515 Google reviews
Open 24/7 · 5.0 from 120 Google reviews
#6ProResults Plumbing Oakville – Residential & Commercial Services
Open 24/7 · 5.0 from 117 Google reviews
#717 Plumbing & Construction Design Ltd
Open 24/7 · 5.0 from 115 Google reviews
Open 24/7 · 5.0 from 108 Google reviews
24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 668 is on the plumbers page.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and trade focus: 4.8★ from 2,362 Google reviews, listed on Google as “Plumber”.
Based in Oakville
Ranked #2 because of its Google rating and trade focus: 4.8★ from 280 Google reviews, listed on Google as “Plumber”.
Based in Mississauga, 9 km away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 577 Google reviews, listed on Google as “Plumber”.
Based in Burlington, 13 km away
Ranked #4 because of its Google rating and review volume: 4.8★ from 27,515 Google reviews.
Based in Oakville
Ranked #5 because of its Google rating and trade focus: 5.0★ from 120 Google reviews, listed on Google as “Plumber”.
Based in Oakville
Ranked #6 because of its Google rating and trade focus: 5.0★ from 117 Google reviews, listed on Google as “Plumber”.
Based in Oakville
Ranked #7 because of its Google rating and trade focus: 5.0★ from 115 Google reviews, listed on Google as “Plumber”.
Based in Oakville
Ranked #8 because of its Google rating and trade focus: 5.0★ from 108 Google reviews, listed on Google as “Plumber”.
Based in Oakville
Ranked #9 because of its Google rating and trade focus: 4.7★ from 178 Google reviews, listed on Google as “Plumber”.
Based in Milton, 13 km away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 371 Google reviews, listed on Google as “Plumber”.
Based in Burlington, 5 km away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 190 Google reviews, listed on Google as “Plumber”.
Based in Burlington, 10 km away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 299 Google reviews, listed on Google as “Plumber”.
Based in Burlington, 16 km away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 541 Google reviews, listed on Google as “Plumber”.
Based in Milton, 8 km away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 160 Google reviews, listed on Google as “Plumber”.
Based in Mississauga, 20 km away
Ranked #15 because of its Google rating and review volume: 4.8★ from 20,445 Google reviews.
Based in Oakville
Ranked #16 because of its Google rating and trade focus: 4.6★ from 101 Google reviews, listed on Google as “Plumber”.
Based in Mississauga, 13 km away
Ranked #17 because of its Google rating and trade focus: 4.7★ from 420 Google reviews, listed on Google as “Plumber”.
Based in Toronto, 22 km away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 844 Google reviews, listed on Google as “Plumber”.
Based in Burlington, 13 km away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 176 Google reviews, listed on Google as “Plumber”.
Based in Oakville
Ranked #20 because of its Google rating and trade focus: 4.7★ from 58 Google reviews, listed on Google as “Plumber”.
Based in Mississauga, 17 km away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 258 Google reviews, listed on Google as “Plumber”.
Based in Oakville
Ranked #22 because of its Google rating and trade focus: 5.0★ from 36 Google reviews, listed on Google as “Plumber”.
Based in Oakville
Ranked #23 because of its Google rating and trade focus: 4.9★ from 36 Google reviews, listed on Google as “Plumber”.
Based in Burlington, 15 km away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 177 Google reviews, listed on Google as “Plumber”.
Based in Toronto, 30 km away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 1,062 Google reviews, listed on Google as “Plumber”.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.
Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 plumbers are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.
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 |
|---|---|---|
| Reputation | 15% | Google star rating, adjusted for how many reviews back it |
| Credentials | 15% | Active state license, bond and workers’ comp on file |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list |
| Recency | 5% | Share of reviews from the last 12 months |
| Availability | 15% | Weekly open hours, Saturday, Sunday, 24/7 or same-day |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) |
| Proximity | 5% | Based in the city scores highest, less the farther away it is |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are |