Licensing status has not been verified for Markham Backflow Plumbing & Mechanical. Contact them directly to confirm current credentials before hiring.

Does Markham Backflow Plumbing & Mechanical have insurance?

WSIB insurance status is not verified for Markham Backflow Plumbing & Mechanical. Request proof of workplace insurance and liability coverage before hiring.

What is Markham Backflow Plumbing & Mechanical’s rating?

Markham Backflow Plumbing & Mechanical has a ProScore Trust Score of 50/100 (Basic), calculated from 1 verified data source including 14 Google reviews.

Where is Markham Backflow Plumbing & Mechanical located?

Markham Backflow Plumbing & Mechanical is a plumber serving Whitchurch-Stouffville, Ontario. You can reach them at +1 416-554-2213. View their full profile on ProScore for verified reviews and credentials.

Business Details

23 Kartok Ave, Whitchurch-Stouffville, ON L4A 0R2

Plumber

View on Google Maps

Hours

Monday8a.m.-6p.m.

Tuesday8a.m.-6p.m.

Wednesday8a.m.-6p.m.

Thursday8a.m.-6p.m.

Friday8a.m.-6p.m.

SaturdayClosed

SundayClosed

Services Offered

Drain cleaningPipe repairWater heater installationFixture installationEmergency plumbingLeak detection

Emergency Service

Credentials

Insurance

Not Confirmed

ProScore displays credential information as reported by contractors and third-party sources. Homeowners are encouraged to independently verify all credentials, licences, and insurance prior to engaging any contractor.

Homeowner Guides

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Data Transparency

Sources: Google
Score computed: September 19, 2026

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Checked by ProScore

What is the ProScore?

The ProScore aggregates ratings from multiple review platforms into a single score from 0 to 100. Unlike platforms that show only their own reviews, the ProScore gives you the complete picture. Scores are capped for providers with limited source verification.

≥81

Elite

≥70

Trusted

≥54

Good

≥30

Basic

<30

Caution

—

Not yet rated

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ProScore profiles are built from publicly available information and official public registries, and scored using ProScore’s own methodology. We check this data against third-party sources and work to keep it accurate, but records change and errors can occur. A ProScore is informational only — it is not a guarantee, endorsement, or recommendation. Before hiring any contractor, you should independently verify and confirm all relevant credentials, licences, insurance (including WSIB coverage) and references directly with the contractor and the issuing authority. If something here looks wrong, let us know and we’ll correct it promptly.