Company lists · Data refreshed September 2026

Top 25 Municipal wastewater treatment contractors based in Canada

Name: Municipal wastewater treatment contractors based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 168 companies tracked

RevenueBase identified 168 company matches for municipal wastewater treatment contractors associated with Canada as of September 2026 and tracks 3,372 professional contacts across them, including 1,663 with verified work emails. Calgary is the largest hub.

This list covers company matches for municipal wastewater treatment contractors associated with Canada, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

168Companies

3,372Contacts tracked

1,663Verified emails

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The 25 largest municipal wastewater treatment contractors based in Canada

Ranked by team size

Top 25 of 168 company matches for municipal wastewater treatment contractors based in Canada, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	OVIVO	Exact match	Montreal, QC, CanadaHQ recorded Sep 17, 2026	501-1,000	829 contacts →
	Exact match “Ovivo is a powerful global brand, uniting world-renowned trademarks and a highly specialized team of 700 water treatment experts operating across the globe.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Ontario Clean Water Agency	Exact match	Mississauga, ON, CanadaHQ recorded Sep 17, 2026	501-1,000	662 contacts →
	Exact match “Water is one of our most precious resources.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Integrated Sustainability	Exact match	Calgary, AB, CanadaHQ recorded Sep 17, 2026	51-200	115 contacts →
	Exact match “Integrated Sustainability is a performance infrastructure group providing advisory, design-build-supply, and operational expertise in water and wastewater treatment, water and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Clearford	Exact match	Ottawa, ON, CanadaHQ recorded Sep 17, 2026	51-200	86 contacts →
	Exact match “Clearford delivers optimized smart treatment solutions for communities of all sizes, when and where you need them, high performance water and wastewater treatment plus all of the…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Bionest	Exact match	Shawinigan, QC, CanadaHQ recorded Sep 17, 2026	51-200	80 contacts →
	Exact match “Spécialiste dans le développement et la commercialisation de systèmes avancés d'épuration des eaux usées, Bionest offre des systèmes dont les performances inégalées permettent de…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	NEXOM	Exact match	Winnipeg, MB, CanadaHQ recorded Sep 17, 2026	51-200	68 contacts →
	Exact match “The wastewater industry has seen how nutrients and energy costs expose the limits of existing solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Bennett Construction Group	Exact match	Millgrove, ON, CanadaHQ recorded Sep 17, 2026	51-200	63 contacts →
	Exact match “Bennett Construction Group has specialized in the construction of Water and Wastewater treatment facilities for over 40 years.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	GS Construction Underground Infrastructure	Exact match	Acheson, AB, CanadaHQ recorded Sep 17, 2026	51-200	61 contacts →
	Exact match “GS has prided itself on a reputation of quality work, continuous learning and a primary focus on employee safety.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	AWC Water Solutions	Exact match	Langley, BC, CanadaHQ recorded Sep 17, 2026	51-200	61 contacts →
	Exact match “AWC Water Solutions designs, manufactures, and integrates water and wastewater treatment systems for a variety of municipal and industrial applications.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Tritech Group LTD	Exact match	Langley, BC, CanadaHQ recorded Sep 17, 2026	51-200	56 contacts →
	Exact match “Tritech is an industry leader in integrated design, project management, and construction services for water and wastewater infrastructure projects.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Aquatech Canadian Water Services INC	Exact match	Cochrane, AB, CanadaHQ recorded Sep 17, 2026	51-200	54 contacts →
	Exact match “At Aquatech Canadian Water Services Inc, we are dedicated to empowering communities, cities, and industries to achieve their water services goals.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Filtrum Construction	Exact match	Québec, QC, CanadaHQ recorded Sep 17, 2026	51-200	49 contacts →
	Exact match “As water and wastewater specialists, Filtrum Construction is a trusted partner to engineer and construct leading-edge, cost-effective solutions for industrial and municipal…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Napier-Reid LTD	Exact match	Aurora, ON, CanadaHQ recorded Sep 17, 2026	11-50	45 contacts →
	Exact match “About Us Napier-Reid is a leading water and wastewater treatment solutions company with an established reputation for design innovation and manufacturing excellence.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Delco Water, A Division Of Delco Automation	Exact match	Saskatoon, SK, CanadaHQ recorded Sep 17, 2026	51-200	44 contacts →
	Exact match “Delco Water, a division of Delco Automation Inc, is a premier water treatment solutions provider and equipment integrator.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	H2flow	Exact match	Vaughan, ON, CanadaHQ recorded Sep 17, 2026	11-50	43 contacts →
	Exact match “Water & Wastewater Treatment Equipment sales & service for industrial & municipal applications: grinders, screens, conveyors, SBRs, grit removal, aerators, diffusers, blowers…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Ovivo Filterboxx	Exact match	Calgary, AB, CanadaHQ recorded Sep 17, 2026	51-200	41 contacts →
	Exact match “Based in Alberta, Canada, FilterBoxx is a renowned leader in the design and supply of modular waterIntroPage and wastewater solutions for a wide array of industrial customers.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Arrow Utilities	Exact match	Strathcona County, AB, CanadaHQ recorded Sep 17, 2026	11-50	37 contacts →
	Exact match “What do you see in a drop of clear water?” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Mabarex	Exact match	Saint-laurent, QC, CanadaHQ recorded Sep 17, 2026	11-50	35 contacts →
	Exact match “DESIGN / BUILT / OPERATE Mabarex is a water-treatment leader serving clients across Canada since 1983.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Continental Carbon Group	Exact match	Stoney Creek, ON, CanadaHQ recorded Sep 17, 2026	11-50	35 contacts →
	Exact match “SERVICES, PRODUCTS AND EXPERTISE IN THE WATER TREATMENT INDUSTRY Continental Carbon Group offers a wide range of products, services and expertise in the water and wastewater…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Kontek Process Water Management	Exact match	Burlington, ON, CanadaHQ recorded Sep 17, 2026	11-50	34 contacts →
	Exact match “Kontek Process Water Management is a well-established privately owned Canadian company with primary offices and manufacturing facilities located in Burlington, Ontario, Canada.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Waterloo Biofilter Systems INC	Exact match	Guelph, ON, CanadaHQ recorded Sep 17, 2026	11-50	32 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Bishop Water	Exact match	Arnprior, ON, CanadaHQ recorded Sep 17, 2026	11-50	32 contacts →
	Exact match “Bishop Water provides simple, reliable nutrient removal and solids management solutions that enable communities and industries to affordably solve water and wastewater challenges…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	ADI Systems, An Evoqua Brand	Exact match	Fredericton, NB, CanadaHQ recorded Sep 17, 2026	51-200	28 contacts →
	Exact match “ADI® Systems, an Evoqua brand, has been specializing in the design and construction of industrial wastewater treatment systems for over 35 years.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	BGL Contractors Corp	Exact match	Waterloo, ON, CanadaHQ recorded Sep 17, 2026	11-50	24 contacts →
	Exact match “We are a multi-trade contractor with our head office located in Waterloo, Ontario.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	ETO Engineering	Exact match	Richmond Hill, ON, CanadaHQ recorded Sep 17, 2026	11-50	23 contacts →
	Exact match “ETO Engineering (ETO) is a Canadian consulting firm headquartered in Richmond Hill, Ontario Canada, specializing in multidisciplinary engineering services tailored for…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “municipal wastewater treatment contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 168 municipal wastewater treatment contractors based in Canada

See the full list, filter by size, metro and specialty, and access 1,663 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Municipal wastewater treatment contractors based in Canada at a glance

As of Sep 17, 2026

49.3%Verified-email coverage

20.1Average contacts per company

11-50Median size (employees)

9.5%Largest-city concentration · Calgary

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 168 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Canada whose business descriptions match “municipal wastewater treatment contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 1,663 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “municipal wastewater treatment contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many municipal wastewater treatment contractors are there based in Canada?

RevenueBase identified 168 company matches for municipal wastewater treatment contractors associated with Canada as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

OVIVO tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most municipal wastewater treatment contractors?

Calgary leads with 16 company records, followed by Burlington (6) and Mississauga (6).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,663 professional contacts with verified work emails tracked across these 168 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.