Plumber Professional

Koert Plumbing Ltd.

Waterloo, ON

Emergency ServiceWSIBBBB AccreditedResponds to Reviews

2 Credentials Verified

77out of 100

Trusted

ProScore

This score reflects 128 Google reviews, WSIB coverage confirmed.

How is this calculated?

Score updated: Oct 2026

About Koert Plumbing Ltd.

AI-generated summary from ProScore data sources

Koert Plumbing Ltd. is a plumbing repair service based in Waterloo that offers online estimates and works on site, available weekdays.

Koert Plumbing Ltd.: ProScore 77, tied 4th of 14 scored plumbers in Waterloo.
128 Google reviews (4.8 stars; median 44) for Koert Plumbing Ltd., ahead of 13 of 17 plumbers.

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Ratings Across Platforms

Aggregated from independent sources. Only ProScore shows all.

2 sources · 128 reviews

GoogleListing found

Google Business Profile reviews

4.8/5

128 reviews

BBBListing found

Better Business Bureau · accredited · as of March 2026

A+Rating · accredited

Not found on 2 other platforms ProScore checks (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

Trusted Level

Scores in ProScore’s Trusted tier — strong, consistent signals across the sources ProScore checks.

Highly Rated

Consistently rated 4.8 stars across 128 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.

Google Review Breakdown

128 total

121

Featured Review

From Google

“

We reached out to Koert Plumbing after experiencing issues with the plumbing system at our house. The team was incredibly responsive, particularly on one occasion that was on a long weekend. The crew is great and knowledgeable, and very transparent. They took the time to explain the issue at hand and options around how to best remedy the matter. The team managed themselves and the work in a very professional manner, and most notably, followed up with updates on progress of the work they perf

George Traianou

Google Review

Photos & Work

1 photo

Other top rated plumber in Waterloo

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Waterloo

4.8(379)

Dunn Heating and Air Conditioning

Transparent Backflow Services

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5(37)

Frequently Asked Questions

Is Koert Plumbing Ltd. licensed?

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

Does Koert Plumbing Ltd. have insurance?

Yes, Koert 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 Koert Plumbing Ltd.’s rating?

Koert Plumbing Ltd. has a ProScore Trust Score of 77/100 (Trusted), calculated from 2 data sources including 128 Google reviews.

Where is Koert Plumbing Ltd. located?

Koert Plumbing Ltd. is a plumber serving Waterloo, Ontario. View their full profile on ProScore for reviews and credentials.

Business Details

66 Rankin St #12, Waterloo, ON N2V 1V9

Plumber

View on Google Maps

Hours

Monday8a.m.-4:30p.m.

Tuesday8a.m.-4:30p.m.

Wednesday8a.m.-4:30p.m.

Thursday8a.m.-4:30p.m.

Friday8a.m.-4:30p.m.

SaturdayClosed

SundayClosed

Services Offered

Drain cleaningPipe repairWater heater installationFixture installationEmergency plumbingLeak detection

Services & Info

Emergency ServiceOnsite servicesOnline estimates

Crowd

LGBTQ+ friendlyTransgender safe space

Other

LGBTQ+ friendly

Amenities

Gender-neutral washroom

Offerings

Repair services

Service options

Language assistance

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 Waterloo 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 Waterloo

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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.