Plumber Professional

One Drop Plumbing Ltd

Markham, ON

Emergency ServiceWSIBBBB Accredited

+1 647-895-4275

2 Credentials Verified

64out of 100

Good

ProScore

This score reflects 42 Google reviews, WSIB coverage confirmed.

How is this calculated?

Score updated: Oct 2026

About One Drop Plumbing Ltd

AI-generated summary from ProScore data sources

One Drop Plumbing Ltd is a plumber operating 24 hours a day, seven days a week, based in Markham, Ontario.

One Drop Plumbing Ltd: ProScore 64, tied 7th of 17 scored plumbers in Markham.
42 Google reviews (5.0 stars; median 29) for One Drop Plumbing Ltd, ahead of 14 of 19 plumbers.

See Google reviews

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Ratings Across Platforms

Aggregated from independent sources. Only ProScore shows all.

2 sources · 42 reviews

GoogleListing found

Google Business Profile reviews

5.0/5

42 reviews

BBBListing found

Better Business Bureau · accredited · as of March 2026

A+Rating · accredited

2 platforms not yet checked (Review platform B, Review platform C).

ProScore aggregates Google, the BBB and other major review platforms. Some sources are not named publicly.

How sources are weighted: ProScore methodology.

Things to Know

Highly Rated

Consistently rated 5.0 stars across 42 Google reviews.

WSIB Verified

Workplace Safety and Insurance Board coverage confirmed — you're protected.

BBB Accredited · A+

Better Business Bureau accredited with an A+ rating.

Open 24 Hours

Every posted day shows 24-hour availability.

Photos & Work

1 photo

Other top rated plumber in Markham

Preferred Plumbing Solutions Inc.

Superior Plumbing & Heating of Markham

Markham

4.9(44)

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Frequently Asked Questions

Is One Drop Plumbing Ltd licensed?

Licensing status has not been verified for One Drop Plumbing Ltd. Contact them directly to confirm current credentials before hiring.

Does One Drop Plumbing Ltd have insurance?

Yes, One Drop Plumbing Ltd has verified WSIB (Workplace Safety and Insurance Board) coverage, which protects homeowners from liability if a worker is injured on the job.

What is One Drop Plumbing Ltd’s rating?

One Drop Plumbing Ltd has a ProScore Trust Score of 64/100 (Good), calculated from 2 data sources including 42 Google reviews.

Where is One Drop Plumbing Ltd located?

One Drop Plumbing Ltd is a plumber serving Markham, Ontario. You can reach them at +1 647-895-4275. View their full profile on ProScore for reviews and credentials.

Business Details

10 Black Walnut Dr, Markham, ON L3S 4A7

Plumber

View on Google Maps

Hours

Every dayOpen 24 hours

Services Offered

Drain cleaningPipe repairWater heater installationFixture installationEmergency plumbingLeak detection

Open 24 HoursEmergency Service

Credentials

Insurance

Not Confirmed

Credentials are as reported by contractors and public sources — verify each with the contractor and the issuing authority before hiring.Check it yourself: WSIB clearance

Homeowner Guides

How much does this service cost in Ontario?Red flags when hiring Plumber FAQs in Markham View all guides →

Data Transparency

Sources: Google, BBB, and Ontario regulatory records
Score computed: October 13, 2026

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Checked by ProScore

What is the ProScore?

One score from 0 to 100 across every review platform and public registry ProScore checks. How the ProScore works

≥81

Elite

≥70

Trusted

≥54

Good

≥30

Basic

<30

Caution

—

Not yet rated

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Compare Plumbers in Markham

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A ProScore is informational only — not a guarantee, endorsement, or recommendation — and the data behind it may be incomplete or out of date. Before hiring, independently verify all credentials, including licences, insurance (including WSIB) and references, directly with the contractor and the issuing authority. Full data notice. Something wrong? Let us know.