Plumber Professional

McDowell Drain & Waterproofing

Niagara-on-the-Lake, ON

Emergency ServiceBBB AccreditedResponds to Reviews

+1 905-431-5612 Website

1 Credential VerifiedServing Niagara-on-the-Lake & area

73out of 100

Trusted

ProScore

This score reflects 59 Google reviews, ratings from 2 platforms in all.

How is this calculated?

Score updated: Oct 2026

About McDowell Drain & Waterproofing

AI-generated summary from ProScore data sources

McDowell Drain & Waterproofing operates six days a week and handles basement waterproofing, sewer line replacement, and drainage solutions with careful attention to detail, keeping work sites tidy and explaining each step of the process.

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What Customers Say

AI analysis of 10 Google reviews

Top Strengths

Exceptional expertise in drainage and waterproofing with detailed problem diagnosis; clients praise Stuart's deep knowledge and ability to identify root causes

Outstanding professionalism and integrity; described as 'genuinely honest,' 'old school kindness,' and willing to help beyond scope of work

High-quality execution with attention to detail; minimal disruption to property, tidy work sites, and thorough explanations of each step

basement waterproofingsewer line replacementhonest and knowledgeable ownerexcellent drainage solutionsprofessional crew and team leads

Ratings Across Platforms

Aggregated from independent sources. Only ProScore shows all.

3 sources · 64 reviews

GoogleListing found

Google Business Profile reviews

4.9/5

59 reviews

Review platform CListing found

Independent review platform · name withheld by policy

5.0/5

5 reviews

BBBListing found

Better Business Bureau · accredited · as of March 2026

A+Rating · accredited

Review platform B not yet checked.

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 4.9 stars across 59 Google reviews.

Rated on Multiple Platforms

Independently rated on 2 review platforms — ratings that agree across sources are harder to game.

BBB Accredited · A+

Better Business Bureau accredited with an A+ rating.

What Reviews Highlight

Reviews mention: basement waterproofing, sewer line replacement, honest and knowledgeable owner.

Featured Review

From Google

“

This review is to let people know that there are truly honest and dedicated professionals out there. I was planning to purchase a home in Niagara Falls, and during the home inspection a foundation crack and active leak were discovered. I contacted several contractors, and one of them was Stuart. From the 10 contactors I reached out, Stuart was then only one who sounded genuine.<br><br>Stuart provided exceptional service, took the time to explain everything in detail, and clearly outlined how the

A S

Google Review

Photos & Work

1 photo

Other top rated plumber in Niagara-on-the-Lake

A&J Plumbing Heating

Niagara-on-the-Lake

4.3(15)

Frequently Asked Questions

Is McDowell Drain & Waterproofing licensed?

Licensing status has not been verified for McDowell Drain & Waterproofing. Contact them directly to confirm current credentials before hiring.

Does McDowell Drain & Waterproofing have insurance?

WSIB insurance status is not verified for McDowell Drain & Waterproofing. Request proof of workplace insurance and liability coverage before hiring.

What is McDowell Drain & Waterproofing’s rating?

McDowell Drain & Waterproofing has a ProScore Trust Score of 73/100 (Trusted), calculated from 3 data sources including 59 Google reviews.

Where is McDowell Drain & Waterproofing located?

McDowell Drain & Waterproofing is a plumber serving Niagara-on-the-Lake, Ontario. You can reach them at +1 905-431-5612. View their full profile on ProScore for reviews and credentials.

Business Details

590 Mississagua St, Niagara-on-the-Lake, ON L0S 1J0

Plumber

View on Google Maps

Hours

Monday8a.m.-8p.m.

Tuesday8a.m.-8p.m.

Wednesday8a.m.-8p.m.

Thursday8a.m.-8p.m.

Friday8a.m.-8p.m.

Saturday8a.m.-8p.m.

SundayClosed

Services Offered

Drain cleaningPipe repairWater heater installationFixture installationEmergency plumbingLeak detection

Emergency 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 View all guides →

Data Transparency

Sources: Google, BBB, and major review platforms
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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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.