41 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Petrolia: Royalty Plumbing, CR Score 63/100; 5.0★ from 189 Google reviews; open 24/7.
Best for emergencies (open 24/7): Dunnrite Sewer & Drain Cleaning, posts 24/7 hours; ranked #2 of 41.
Most-reviewed: Reliance Home Comfort, 3,256 Google reviews at 4.8★, the most of 41 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
41 Petrolia plumbers are ranked here by CR Score, from ten published factors. 17 are open 24/7, 19 open Saturdays and 15 open Sundays, based on posted hours. The median Google rating is 4.8★ across 41 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Royalty Plumbing | 63 | 5.0★ (189) | Sarnia, 9 km away | 24/7 | Overall |
| 2 | Dunnrite Sewer & Drain Cleaning | 60 | 4.9★ (369) | Port Huron, 28 km away | 24/7 | Emergencies |
| 3 | Modern Sewer & drain cleaning | 59 | 4.9★ (266) | Sarnia, 31 km away | 24/7 | — |
| 4 | Reliance Home Comfort | 58 | 4.8★ (3,256) | Sarnia, 20 km away | 24/7 | Most reviews |
| 5 | Royalty Plumbing | 58 | 4.9★ (63) | Sarnia, 24 km away | 24/7 | — |
| 6 | Vincent's Heating & Plumbing Inc | 58 | 4.8★ (997) | Port Huron, 27 km away | 24/7 | — |
| 7 | Plympton Plumbing | 57 | 4.9★ (113) | Sarnia, 13 km away | Sat | — |
| 8 | A. Webster Sewer & Drain | 56 | 4.9★ (76) | Sarnia, 38 km away | 24/7 | — |
| 9 | Lambton Sanitation | 55 | 5.0★ (309) | Sarnia, 21 km away | 24/7 | — |
| 10 | St. Clair Expert Plumbing & Maintenance | 55 | 4.5★ (35) | Sarnia, 28 km away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 189 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Port Huron, 28 km away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 369 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 31 km away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 266 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 20 km away
Ranked #4 because of its Google rating and review volume: 4.8★ from 3,256 Google reviews, the most in Petrolia.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 24 km away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 63 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Port Huron, 27 km away
Ranked #6 because of its Google rating and review volume: 4.8★ from 997 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 13 km away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 113 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 38 km away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 76 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 21 km away
Ranked #9 because of its Google rating and review volume: 5.0★ from 309 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 28 km away
Ranked #10 because of its Google rating and trade focus: 4.5★ from 35 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 36 km away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 14 km away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 11 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 15 km away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Port Huron, 27 km away
Ranked #14 because of its Google rating and trade focus: 4.6★ from 14 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Petrolia
Ranked #15 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Port Huron, 28 km away
Ranked #16 because of its Google rating and trade focus: 4.6★ from 41 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Sarnia, 19 km away
Ranked #17 because of its Google rating and trade focus: 4.7★ from 51 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 24 km away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 35 km away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 145 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 40 km away
Ranked #20 because of its Google rating and trade focus: 4.5★ from 53 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 11 km away
Ranked #21 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Port Huron, 27 km away
Ranked #22 because of its Google rating and trade focus: 3.0★ from 6 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 23 km away
Ranked #23 because of its Google rating and trade focus: 4.7★ from 24 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lambton Shores, 28 km away
Ranked #24 because of its Google rating and trade focus: 4.6★ from 44 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 22 km away
Ranked #25 because of its Google rating and trade focus: 4.2★ from 73 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #39, in CR Score order; each links to its profile. We publish the top 39 of 41 ranked plumbers here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Sarnia Sewer & Drainage | 51 | 5.0★ (5) | 23 km |
| 28 | Jack & Sons Sewer Cleaning | 51 | 4.5★ (8) | 29 km |
| 29 | Kem Mechanical Contractors Ltd | 50 | 5.0★ (3) | 25 km |
| 32 | MK Contracting & Demolition | 49 | 5.0★ (6) | 18 km |
| 35 | American Plumbing & Mechanical | 49 | 2.3★ (4) | 28 km |
| 36 | Superior Plumbing | 49 | 3.0★ (9) | 32 km |
| 39 | Vartys Construction Inc | 47 | 5.0★ (6) | 32 km |
US national ranges converted to CAD, not adjusted for Petrolia. 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 |
We scored 41 Petrolia 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 Petrolia 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 |