66/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.8★ from 2,209 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 2,209 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1541 Riverside Dr., Ottawa, ON K1G 4E2
Best Plumbers in Ottawa, ON (2026)
159 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Ottawa: John The Plumber, CR Score 66/100; 4.8★ from 2,209 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Mr. Rooter Plumbing of Ottawa, posts 24/7 hours; ranked #2 of 159.
- 8
Most-reviewed: Reliance Holmes Ottawa Heating, Air Conditioning & Plumbing, 8,352 Google reviews at 4.7★, the most of 159 ranked; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
159 Ottawa plumbers are ranked here by CR Score, from ten published factors. 71 are open 24/7, 99 open Saturdays and 88 open Sundays, based on posted hours. The median Google rating is 4.9★ across 159 rated businesses.
Top 10 plumbers in Ottawa at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | John The Plumber | 66 | 4.8★ (2,209) | Ottawa | 24/7 | Overall |
| 2 | Mr. Rooter Plumbing of Ottawa | 65 | 4.7★ (1,773) | Ottawa | 24/7 | Emergencies |
| 3 | The Irish Plumber | 64 | 4.8★ (753) | Ottawa | 24/7 | — |
| 4 | John The Plumber | 64 | 4.9★ (342) | Ottawa | 24/7 | — |
| 5 | Environmental Plumbing and Drains | 63 | 4.8★ (419) | Ottawa | 24/7 | — |
| 6 | The Super Plumber - Ottawa | 63 | 4.9★ (261) | Ottawa | 24/7 | — |
| 7 | Canada Plumbing | 63 | 5.0★ (177) | Ottawa | 24/7 | — |
| 8 | Reliance Holmes Ottawa Heating, Air Conditioning & Plumbing | 63 | 4.7★ (8,352) | Ottawa | 24/7 | Most reviews |
| 9 | B&W Plumbing | 63 | 5.0★ (150) | Ottawa | 24/7 | — |
| 10 | Plumbing Now | 63 | 4.8★ (289) | Ottawa | 24/7 | — |
The 159 best plumbers in Ottawa, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Ottawa
65/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.7★ from 1,773 Google reviews, listed on Google as “Plumber”.
- 4.7★ from 1,773 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3900 Russell Rd, Ottawa, ON K1G 3N2
Based in Ottawa
64/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 753 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 753 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1405 Raven Ave, Ottawa, ON K1Z 7Y5
Based in Ottawa
64/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 342 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 342 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2688 Conn St, Ottawa, ON K2B 7C7
Based in Ottawa
63/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.8★ from 419 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 419 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 500 Edgeworth Ave, Ottawa, ON K2B 5L1
Based in Ottawa
63/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 261 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 261 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1181 Parisien St Unit B, Ottawa, ON K1B 4W4
Based in Ottawa
63/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 177 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 177 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5330 Canotek Rd Unit 22, Ottawa, ON K1J 9C1
Based in Ottawa
63/100CR ScoreRanked #8 because of its Google rating and review volume: 4.7★ from 8,352 Google reviews, the most in Ottawa.
- 4.7★ from 8,352 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1000 Logistics Private Unit 3, Ottawa, ON K1J 3N2
#9 B&W Plumbing
Based in Ottawa
63/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 150 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 150 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 50 Cleopatra Dr, Ottawa, ON K2G 0B3
#10 Plumbing Now
Based in Ottawa
63/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 289 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 289 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2487 Kaladar Ave #2120, Ottawa, ON K1V 8B9
Based in Nepean, 13 km away
63/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.8★ from 1,112 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 1,112 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 14 Bexley Pl #102, Nepean, ON K2H 8W2
Based in Ottawa
62/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 129 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 129 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 610 Somerset St W 1st floor, Ottawa, ON K1R 5K4
Based in Ottawa
62/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 110 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 110 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 275 Stroget Private, Ottawa, ON K2E 0A9
#14 Offset Plumbing
Based in Ottawa
62/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 82 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 82 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 164 First Ave, Ottawa, ON K1S 2G4
Based in Ottawa
62/100CR ScoreRanked #15 because of its Google rating and review volume: 4.9★ from 6,159 Google reviews.
- 4.9★ from 6,159 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 38 Antares Dr Suite 400, Ottawa, ON K2E 7V2
Based in Ottawa
61/100CR ScoreRanked #16 because of its Google rating and review volume: 4.8★ from 1,470 Google reviews.
- 4.8★ from 1,470 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 894 Boyd Ave, Ottawa, ON K2A 2E3
#17 Its Plumbing
Based in Ottawa
61/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 70 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 70 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1680 Woodward Dr Unit 206, Ottawa, ON K2C 3R7
Based in Ottawa
61/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 55 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 55 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- Katimavik rd, Ottawa, ON K2L2H6
Based in Ottawa
61/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 67 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 67 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3274 Kodiak Street, Ottawa, ON K1V 7S8
Based in Ottawa
61/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.8★ from 75 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 75 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 15 Capella Ct #109, Ottawa, ON K2E 7X1
Based in Ottawa
61/100CR ScoreRanked #21 because of its Google rating and review volume: 4.9★ from 3,646 Google reviews.
- 4.9★ from 3,646 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1181 Parisien St, Ottawa, ON K1B 4W4
Based in Ottawa
61/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.7★ from 253 Google reviews, listed on Google as “Plumber”.
- 4.7★ from 253 Google reviews
- Hours
- Mon–Fri 7:30 AM–9 PM · Sat–Sun 8 AM–9 PM
- Address
- 229 Rue Cedar, Gatineau, QC J8P 5E9
Based in Ottawa
60/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 36 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 36 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3748 Albion Rd S, Ottawa, ON K1T 1A5
#24 John The Plumber
Based in Nepean, 10 km away
60/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.8★ from 412 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 412 Google reviews
- Hours
- Mon–Sun 7:30 AM–11 PM
- Address
- 15 Grenfell Crescent, Nepean, ON K2G 0G3
Based in Clarence-Rockland, 17 km away
60/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.8★ from 276 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 276 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 326 Warden Ave, Orléans, ON K1E 1T4
Plumbers ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 159 ranked plumbers here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Enercare | 60 | 4.7★ (5,672) | In Ottawa |
| 27 | Superior Plumbing & Heating of Gatineau | 60 | 4.6★ (67) | In Ottawa |
| 28 | Enercare | 60 | 4.8★ (2,654) | In Ottawa |
| 29 | Environmental Plumbing | 60 | 4.9★ (163) | 18 km |
| 30 | John The Plumber Orleans | 60 | 4.8★ (626) | 17 km |
| 31 | John The Plumber | 60 | 4.8★ (401) | 14 km |
| 32 | John The Plumber | 59 | 4.9★ (412) | 19 km |
| 33 | Out of This World Plumbing | 59 | 4.9★ (111) | 18 km |
| 34 | Tourangeau Mechanical | 59 | 5.0★ (16) | In Ottawa |
| 35 | Safari Plumbing Ltd. | 59 | 4.6★ (403) | In Ottawa |
| 36 | The Irish Plumber | 59 | 4.9★ (110) | 20 km |
| 37 | PenTech Plumbing | 59 | 4.9★ (120) | In Ottawa |
| 38 | Dr. Pipe Drain and Plumbing | 59 | 5.0★ (65) | 17 km |
| 39 | Clean Water Works | 59 | 4.1★ (114) | In Ottawa |
| 40 | Pennex Backflow Prevention & Plumbing | 59 | 4.8★ (12) | In Ottawa |
| 41 | Superior Plumbing & Heating of Ottawa | 58 | 4.6★ (14) | In Ottawa |
| 42 | Zibi Plumbing | 58 | 5.0★ (9) | In Ottawa |
| 43 | John The Plumber | 58 | 4.9★ (255) | 21 km |
| 44 | S & R Plumbing Service | 58 | 4.6★ (131) | 17 km |
| 45 | The Irish Plumber | 58 | 4.8★ (88) | 19 km |
| 46 | Tipi Plumbing Inc | 58 | 4.5★ (13) | In Ottawa |
| 47 | DrainPro | 58 | 4.8★ (86) | 10 km |
| 48 | Lister Plumbing | 58 | 4.7★ (34) | In Ottawa |
| 49 | Summit Drain & Plumbing Ottawa | 58 | 5.0★ (123) | 19 km |
| 50 | Offset Plumbing | 58 | 5.0★ (7) | In Ottawa |
Also serving Ottawa
20 more plumbers 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 |
|---|---|---|
| 613 Plumbing | 5.0★ (61) | 26 km |
| Canada Plumbing Inc | 5.0★ (5) | In Ottawa |
| Canadian Electrical & Plumbing | In Ottawa | |
| Cundell Plumbing & Heating LTD | 3.4★ (55) | 4 km |
| Emmerson Excavation & Drilling | In Ottawa | |
| GFL Environmental (Formerly Drain-All) | 3.9★ (37) | In Ottawa |
| Hani Plumbing Services | 5.0★ (27) | 15 km |
| Kanata Granite Inc | 4.3★ (189) | In Ottawa |
| Macfarlane Plumbing Service Inc | 5.0★ (5) | In Ottawa |
| Mannion Plumbing & Heating Ltd | In Ottawa | |
| Masterson Mechanical Inc. | 4.0★ (28) | In Ottawa |
| MAYA Plumbing | 5.0★ (46) | 20 km |
| MJ XPress Plumbing | 5.0★ (2) | In Ottawa |
| Ottawa Plomberie | In Ottawa | |
| Pro Desk at RONA+ | 5.0★ (1) | In Ottawa |
| RTP Plumbing inc. | In Ottawa | |
| Smart Tech Mechanical Plumbing & Heating | In Ottawa | |
| Tech 2000 Plumbing & Heating | 5.0★ (1) | In Ottawa |
| Ted's Plumbing & Heating | 5.0★ (1) | In Ottawa |
| Topline Drain & Plumbing Ottawa | In Ottawa |
How much do plumbers cost in Ottawa?
US national ranges converted to CAD, not adjusted for Ottawa. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Water heater replacement | CA$1,240 | CA$1,890 | CA$2,570 | Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | October 2026 |
How we ranked Ottawa plumbers
We scored 159 Ottawa plumbers 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 October 22, 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 |
Plumbers in Ottawa: frequently asked questions
Who is the best plumber in Ottawa?
By CR Score, the highest-ranked plumber in Ottawa, ON is John The Plumber with a CR Score of 66/100. It has 4.8★ from 2,209 Google reviews. It is open 24/7. Mr. Rooter Plumbing of Ottawa (#2) and The Irish Plumber (#3) follow. We ranked 159 plumbers on ten factors, last updated October 22, 2026.
How many plumbers are there in Ottawa?
ContractorsRanked ranks 159 plumbers serving Ottawa, ON. 35 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 October 2026.
Which plumbers in Ottawa are open 24/7?
71 ranked plumbers in Ottawa post 24/7 hours. The highest-ranked are John The Plumber (#1), Mr. Rooter Plumbing of Ottawa (#2) and The Irish Plumber (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which plumbers in Ottawa work on weekends?
99 of 159 ranked plumbers post Saturday hours and 88 post Sunday hours. The highest-ranked open Saturdays are John The Plumber (#1), Mr. Rooter Plumbing of Ottawa (#2) and The Irish Plumber (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does water heater replacement cost in Ottawa?
Water heater replacement typically costs CA$1,240 to CA$2,570, with CA$1,890 typical (Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)). This is a national range, not adjusted for Ottawa. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Ottawa plumbers have?
The median Google rating among 159 rated plumbers in Ottawa is 4.9★, with a median of 36 reviews. Reliance Holmes Ottawa Heating, Air Conditioning & Plumbing has the most, 8,352 reviews, and ranks #8. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank plumbers?
Each plumber 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 plumbers outside Ottawa count in this ranking?
Yes, if they are within 40 km of the Ottawa city centre, our service radius for plumbers. 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.
Update log for Ottawa
- October 2026: CR Scores recalculated for 159 plumbers serving Ottawa.
More plumbers and Ottawa pages
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