Plumbers in Waterloo
15 plumbers in Waterloo with multi-platform trust scores.
Loading plumbers...
Who is the best plumber in Waterloo, Ontario?
The most trusted plumber in Waterloo, Ontario is Koert Plumbing Ltd., with a ProScore of 74/100. ProScore has scored 15 plumbers in Waterloo across 10+ data sources and 20+ trust signals. 6 of the 15 are Trusted-tier (70+) or higher.
Trust scores last computed between August 30, 2026 and September 19, 2026.
Which plumbers in Waterloo score highest?
All 15 scored plumbers in Waterloo, ranked by ProScore.
ProScore scores 15 plumbers in Waterloo, and their average score is 64 out of 100. 6 of them reach the Trusted threshold of 70 or higher. 6 are registered with WSIB and 1 holds a TSSA licence. 14 have Google reviews on file — 2,055 reviews in total, and 7 carry a Better Business Bureau rating.
Koert Plumbing Ltd. ranks 1st of the 15 plumbers ProScore scores in Waterloo, holding a ProScore of 74 out of 100 (Trusted tier). Its score draws on 128 Google reviews averaging 4.8 out of 5 and a Better Business Bureau rating of A+. Public records show it is registered with WSIB.
Transparent Backflow Services ranks 2nd of the 15 plumbers ProScore scores in Waterloo, holding a ProScore of 72 out of 100 (Trusted tier). Its score draws on 37 Google reviews averaging 5.0 out of 5. Public records show it is registered with WSIB.
TRH Plumbing & Heating Inc ranks 3rd of the 15 plumbers ProScore scores in Waterloo, holding a ProScore of 72 out of 100 (Trusted tier). Its score draws on 151 Google reviews averaging 4.9 out of 5 and a Better Business Bureau rating of A+. Public records show it is registered with WSIB.
Whiteway Plumbing ranks 4th of the 15 plumbers ProScore scores in Waterloo, holding a ProScore of 72 out of 100 (Trusted tier). Its score draws on 379 Google reviews averaging 4.8 out of 5 and a Better Business Bureau rating of A.
Dunn Heating and Air Conditioning ranks 5th of the 15 plumbers ProScore scores in Waterloo, holding a ProScore of 70 out of 100 (Trusted tier). Its score draws on 975 Google reviews averaging 4.8 out of 5.
The Plumber's Wife ranks 6th of the 15 plumbers ProScore scores in Waterloo, holding a ProScore of 70 out of 100 (Trusted tier). Its score draws on 50 Google reviews averaging 4.9 out of 5.
Pure Life Plumbing & Drains Inc ranks 7th of the 15 plumbers ProScore scores in Waterloo, holding a ProScore of 68 out of 100 (Good tier). Its score draws on 237 Google reviews averaging 5.0 out of 5 and a Better Business Bureau rating of C.
M. Durbin Plumbing Solutions ranks 8th of the 15 plumbers ProScore scores in Waterloo, holding a ProScore of 66 out of 100 (Good tier). Its score draws on 15 Google reviews averaging 4.8 out of 5. Public records show it is registered with WSIB.
JRW Plumbing Inc ranks 9th of the 15 plumbers ProScore scores in Waterloo, holding a ProScore of 65 out of 100 (Good tier). Its score draws on 5 Google reviews averaging 4.6 out of 5. Public records show it is registered with WSIB.
Local Plumbing ranks 10th of the 15 plumbers ProScore scores in Waterloo, holding a ProScore of 64 out of 100 (Good tier). Its score draws on 2 Google reviews averaging 5.0 out of 5 and a Better Business Bureau rating of A+. Its ProScore has risen since the previous recompute.
The Super Plumber - Kitchener ranks 11th of the 15 plumbers ProScore scores in Waterloo, holding a ProScore of 64 out of 100 (Good tier). Its score draws on 65 Google reviews averaging 4.4 out of 5.
Tiger Plumbing ranks 12th of the 15 plumbers ProScore scores in Waterloo, holding a ProScore of 57 out of 100 (Good tier). Its score draws on 2 Google reviews averaging 5.0 out of 5 and a Better Business Bureau rating of A+. Its ProScore has risen since the previous recompute.
Tiger Plumbing Inc ranks 13th of the 15 plumbers ProScore scores in Waterloo, holding a ProScore of 55 out of 100 (Good tier). Its score draws on 6 Google reviews averaging 5.0 out of 5 and a Better Business Bureau rating of A+.
The Waterloo Plumber ranks 14th of the 15 plumbers ProScore scores in Waterloo, holding a ProScore of 45 out of 100 (Basic tier). Its ProScore has risen since the previous recompute.
Veitch Contracting Ltd ranks 15th of the 15 plumbers ProScore scores in Waterloo, holding a ProScore of 43 out of 100 (Basic tier). Its score draws on 3 Google reviews averaging 3.7 out of 5. Public records show it is registered with WSIB and licensed by the TSSA. Its ProScore has risen since the previous recompute.
Of 15 plumbers in Waterloo: 0 rated Elite (81+), 6 rated Trusted (70+), and 7 rated Good (54+).
How is a plumber's ProScore calculated?
Every plumber in Waterloo is evaluated across four pillars: Reputation (ratings across multiple platforms), Verification (government licensing and WSIB), Transparency (online presence and profile completeness), and Sentiment (AI analysis of customer reviews). The result is a ProScore from 0 to 100.
Read the full methodology →Who are the top 3 plumbers in Waterloo?
What else should I check before hiring plumbers in Waterloo?
Frequently Asked Questions
Who is the best plumber in Waterloo?
Koert Plumbing Ltd. has the highest ProScore (74/100) among 15 plumbers in Waterloo, Ontario. Rankings are based on ProScore, which evaluates ratings, government licensing, WSIB coverage, and AI-analyzed customer sentiment.
How do I find a trustworthy plumber in Waterloo?
Look for plumbers with verified active WSIB coverage, and consistent ratings across multiple platforms. ProScore aggregates these signals into a single score from 0-100. In Waterloo, 0 plumbers hold Elite-tier ProScores (81+), 6 are Trusted-tier (70+), and 7 are Good-tier (54+).
Are plumbers in Waterloo licensed?
Plumbers in Ontario should hold valid business registration and active WSIB workers compensation coverage. ProScore verifies these credentials for every provider. Of the top 15 plumbers in Waterloo by ProScore, 6 carry active WSIB coverage.
How many plumbers has ProScore scored in Waterloo?
ProScore has scored 15 plumbers in Waterloo, Ontario. Each provider is evaluated using 10+ data sources, 20+ trust signals, and AI-analyzed customer reviews. Trust scores last computed between August 30, 2026 and September 19, 2026.
What's the ProScore distribution among plumbers in Waterloo?
Among 15 plumbers in Waterloo, Ontario: 0 are Elite-tier (81+), 6 are Trusted-tier (70+), and 7 are Good-tier (54+). The top 15 average a ProScore of 64/100, with Koert Plumbing Ltd. leading at 74/100.