Best Plumbers in Trenton, Ontario
The most trusted plumber in Trenton, Ontario is A1 Plumbing, Pumps & Water Treatment, with a ProScore of 85/100.
The most trusted plumber in Trenton, Ontario is A1 Plumbing, Pumps & Water Treatment, with a ProScore of 85/100. ProScore has verified 6 plumbers in Trenton, scoring each across 10+ data sources and 20+ trust signals. 2 of the 6 are Trusted-tier (70+) or higher.
Last updated: May 6, 2026 · Data refreshed daily
Of 6 plumbers in Trenton: 1 rated Elite (82+), 1 rated Trusted (70+), and 1 rated Good (55+).
How ProScore Ranks Plumbers
Every plumber in Trenton 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 →Frequently Asked Questions
Who is the best plumber in Trenton?
A1 Plumbing, Pumps & Water Treatment has the highest ProScore (85/100) among 6 verified plumbers in Trenton, 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 Trenton?
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 Trenton, 1 plumber holds Elite-tier ProScores (82+), 1 is Trusted-tier (70+), and 1 is Good-tier (55+).
Are plumbers in Trenton 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 5 plumbers in Trenton by ProScore, 2 carry active WSIB coverage.
How many verified plumbers are in Trenton?
ProScore has verified and scored 6 plumbers in Trenton, Ontario. Each provider is evaluated using 10+ data sources, 20+ trust signals, and AI-analyzed customer reviews. Data is refreshed daily.
What's the ProScore distribution among plumbers in Trenton?
Among 6 verified plumbers in Trenton, Ontario: 1 is Elite-tier (82+), 1 is Trusted-tier (70+), and 1 is Good-tier (55+). The top 5 average a ProScore of 64/100, with A1 Plumbing, Pumps & Water Treatment leading at 85/100.