Company lists · Data refreshed September 2026

Top 25 Sewage treatment facility builders based in Canada

Name: Sewage treatment facility builders based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 118 companies tracked

RevenueBase identified 118 sewage treatment facility builders headquartered in Canada as of September 2026 and tracks 3,077 professional contacts across them, including 1,529 with verified work emails. Calgary is the largest hub.

This list covers sewage treatment facility builders headquartered in Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

118Companies

3,077Contacts tracked

1,529Verified emails

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The 25 largest sewage treatment facility builders based in Canada

Ranked by team size

Top 25 of 118 sewage treatment facility builders based in Canada, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sewage treatment facility builders: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	OVIVO	Partial evidence	Montreal, QC, CanadaHQ checked Sep 22, 2026	501-1,000	829 contacts →
	Partial evidence “Ovivo is a powerful global brand, uniting world-renowned trademarks and a highly specialized team of 700 water treatment experts operating across the globe.” Source: RevenueBase Database · checked Sep 22, 2026
2	Tomlinson Group Of Companies	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 22, 2026	501-1,000	475 contacts →
	Indirect evidence “Starting with a single-axle dump truck in 1952, R.W.” Source: RevenueBase Database · checked Sep 22, 2026
3	Clearway Group Of Companies	Indirect evidence	Maple, ON, CanadaHQ checked Sep 22, 2026	201-500	192 contacts →
	Indirect evidence “At Clearway, we are committed to excellence in every project we undertake.” Source: RevenueBase Database · checked Sep 22, 2026
4	Integrated Sustainability	Partial evidence	Calgary, AB, CanadaHQ checked Sep 22, 2026	51-200	115 contacts →
	Partial evidence “Integrated Sustainability is a performance infrastructure group providing advisory, design-build-supply, and operational expertise in water and wastewater treatment, water and…” Source: RevenueBase Database · checked Sep 22, 2026
5	Clearford	Partial evidence	Ottawa, ON, CanadaHQ checked Sep 22, 2026	51-200	86 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026
6	NEXOM	Indirect evidence	Winnipeg, MB, CanadaHQ checked Sep 22, 2026	51-200	68 contacts →
	Indirect evidence “The wastewater industry has seen how nutrients and energy costs expose the limits of existing solutions.” Source: RevenueBase Database · checked Sep 22, 2026
7	Bennett Construction Group	Strong evidence	Millgrove, ON, CanadaHQ checked Sep 22, 2026	51-200	63 contacts →
	Strong evidence “Bennett Construction Group has specialized in the construction of Water and Wastewater treatment facilities for over 40 years.” Source: RevenueBase Database · checked Sep 22, 2026
8	GS Construction Underground Infrastructure	Indirect evidence	Acheson, AB, CanadaHQ checked Sep 22, 2026	51-200	61 contacts →
	Indirect evidence “GS has prided itself on a reputation of quality work, continuous learning and a primary focus on employee safety.” Source: RevenueBase Database · checked Sep 22, 2026
9	AWC Water Solutions	Partial evidence	Langley, BC, CanadaHQ checked Sep 22, 2026	51-200	61 contacts →
	Partial evidence “AWC Water Solutions designs, manufactures, and integrates water and wastewater treatment systems for a variety of municipal and industrial applications.” Source: RevenueBase Database · checked Sep 22, 2026
10	Nason Contracting Group LTD	Indirect evidence	St. Albert, AB, CanadaHQ checked Sep 22, 2026	51-200	58 contacts →
	Indirect evidence “With almost 50 years of experience, Nason is a successful western Canadian-based multi-discipline construction company specializing in the construction and servicing of…” Source: RevenueBase Database · checked Sep 22, 2026
11	Clean Water Works INC	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 22, 2026	51-200	57 contacts →
	Indirect evidence “Headquartered in Ottawa and Montreal serving Ontario, Quebec and New Brunswick, Clean Water Works is one of the nation’s foremost sewer rehabilitation companies.” Source: RevenueBase Database · checked Sep 22, 2026
12	Tritech Group LTD	Indirect evidence	Langley, BC, CanadaHQ checked Sep 22, 2026	51-200	56 contacts →
	Indirect evidence “Tritech is an industry leader in integrated design, project management, and construction services for water and wastewater infrastructure projects.” Source: RevenueBase Database · checked Sep 22, 2026
13	Aquatech Canadian Water Services INC	Indirect evidence	Cochrane, AB, CanadaHQ checked Sep 22, 2026	51-200	54 contacts →
	Indirect evidence “At Aquatech Canadian Water Services Inc, we are dedicated to empowering communities, cities, and industries to achieve their water services goals.” Source: RevenueBase Database · checked Sep 22, 2026
14	Filtrum Construction	Indirect evidence	Québec, QC, CanadaHQ checked Sep 22, 2026	51-200	49 contacts →
	Indirect evidence “As water and wastewater specialists, Filtrum Construction is a trusted partner to engineer and construct leading-edge, cost-effective solutions for industrial and municipal…” Source: RevenueBase Database · checked Sep 22, 2026
15	Napier-Reid LTD	Partial evidence	Aurora, ON, CanadaHQ checked Sep 22, 2026	11-50	45 contacts →
	Partial evidence “About Us Napier-Reid is a leading water and wastewater treatment solutions company with an established reputation for design innovation and manufacturing excellence.” Source: RevenueBase Database · checked Sep 22, 2026
16	H2flow	Partial evidence	Vaughan, ON, CanadaHQ checked Sep 22, 2026	11-50	43 contacts →
	Partial evidence “Water & Wastewater Treatment Equipment sales & service for industrial & municipal applications: grinders, screens, conveyors, SBRs, grit removal, aerators, diffusers, blowers…” Source: RevenueBase Database · checked Sep 22, 2026
17	Ovivo Filterboxx	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 22, 2026	51-200	41 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 22, 2026
18	Mabarex	Partial evidence	Saint-laurent, QC, CanadaHQ checked Sep 22, 2026	11-50	35 contacts →
	Partial evidence “DESIGN / BUILT / OPERATE Mabarex is a water-treatment leader serving clients across Canada since 1983.” Source: RevenueBase Database · checked Sep 22, 2026
19	Continental Carbon Group	Partial evidence	Stoney Creek, ON, CanadaHQ checked Sep 22, 2026	11-50	35 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026
20	Kontek Process Water Management	Partial evidence	Burlington, ON, CanadaHQ checked Sep 22, 2026	11-50	34 contacts →
	Partial evidence “Kontek Process Water Management is a well-established privately owned Canadian company with primary offices and manufacturing facilities located in Burlington, Ontario, Canada.” Source: RevenueBase Database · checked Sep 22, 2026
21	Waterloo Biofilter Systems INC	Indirect evidence	Guelph, ON, CanadaHQ checked Sep 22, 2026	11-50	32 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
22	Bishop Water	Indirect evidence	Arnprior, ON, CanadaHQ checked Sep 22, 2026	11-50	32 contacts →
	Indirect evidence “Bishop Water provides simple, reliable nutrient removal and solids management solutions that enable communities and industries to affordably solve water and wastewater challenges…” Source: RevenueBase Database · checked Sep 22, 2026
23	ADI Systems, An Evoqua Brand	Partial evidence	Fredericton, NB, CanadaHQ checked Sep 22, 2026	51-200	28 contacts →
	Partial evidence “ADI® Systems, an Evoqua brand, has been specializing in the design and construction of industrial wastewater treatment systems for over 35 years.” Source: RevenueBase Database · checked Sep 22, 2026
24	ETO Engineering	Indirect evidence	Richmond Hill, ON, CanadaHQ checked Sep 22, 2026	11-50	23 contacts →
	Indirect evidence “ETO Engineering (ETO) is a Canadian consulting firm headquartered in Richmond Hill, Ontario Canada, specializing in multidisciplinary engineering services tailored for…” Source: RevenueBase Database · checked Sep 22, 2026
25	BI Pure Water Canada INC	Partial evidence	Surrey, BC, CanadaHQ checked Sep 22, 2026	11-50	21 contacts →
	Partial evidence “BI Pure Water’s pre-assembled compact water and wastewater treatment plants are renowned for their cost-effective and reliable performance.” Source: RevenueBase Database · checked Sep 22, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: sewage treatment facility builders. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names sewage treatment facility builders.
Partial evidence: Its own public description names part of sewage treatment facility builders, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sewage treatment facility builders. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 118 sewage treatment facility builders based in Canada

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Sewage treatment facility builders based in Canada at a glance

As of Sep 22, 2026

49.7%Verified-email coverage

26.1Average contacts per company

11-50Median size (employees)

8.5%Largest-city concentration · Calgary

Sep 22, 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 118 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among sewage treatment facility builders, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Canada whose own description of what they do matches “sewage treatment facility builders”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names sewage treatment facility builders), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among sewage treatment facility builders, and records with no verified work email. Companies headquartered outside Canada are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,529 across the full list. 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 22, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names sewage treatment facility builders, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many sewage treatment facility builders are there based in Canada?

RevenueBase identified 118 sewage treatment facility builders headquartered in Canada as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

OVIVO, headquartered in Montreal, tops this list with the largest team on record.

Which city has the most sewage treatment facility builders?

Calgary leads with 10 headquartered companies, followed by Burlington (5) and Ottawa (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,529 verified decision-maker contacts tracked across these 118 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 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 Smart Search, 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.