Company lists · Data refreshed September 2026

Top 25 Reverse osmosis water purification system manufacturers based in Canada

Name: Reverse osmosis water purification system manufacturers based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 145 companies tracked

RevenueBase identified 145 reverse osmosis water purification system manufacturers headquartered in Canada as of September 2026 and tracks 1,721 professional contacts across them, including 657 with verified work emails. Calgary is the largest hub.

This list covers reverse osmosis water purification system manufacturers 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 30, 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 30, 2026 86% judged on-target in blind review

145Companies

1,721Contacts tracked

657Verified emails

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The 25 largest reverse osmosis water purification system manufacturers based in Canada

Ranked by team size

Top 25 of 145 reverse osmosis water purification system manufacturers based in Canada, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to reverse osmosis water purification system manufacturers: 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	Trojan Technologies	Partial evidence	London, ON, CanadaHQ checked Sep 30, 2026	501-1,000	716 contacts →
	Partial evidence “Our Vision To continuously advance water treatment, ensuring everyone has access to clean water, globally.” Source: RevenueBase Database · checked Sep 30, 2026
2	Canature Watergroup	Partial evidence	Regina, SK, CanadaHQ checked Sep 30, 2026	201-500	119 contacts →
	Partial evidence “Canature WaterGroup™ is a dynamic leader in the North American water treatment industry.” Source: RevenueBase Database · checked Sep 30, 2026
3	Kent Water Purification Systems INC	Strong evidence	Missisauga, ON, CanadaHQ checked Sep 30, 2026	n/a	78 contacts →
	Strong evidence “Kent Water Purification Systems is a leading supplier of water purification systems in the Greater Toronto Area.” Source: RevenueBase Database · checked Sep 30, 2026
4	Napier-Reid LTD	Partial evidence	Aurora, ON, CanadaHQ checked Sep 30, 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 30, 2026
5	Kontek Process Water Management	Partial evidence	Burlington, ON, CanadaHQ checked Sep 30, 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 30, 2026
6	Watergroup	Strong evidence	Cambridge, ON, CanadaHQ checked Sep 30, 2026	51-200	27 contacts →
	Strong evidence “Since 1968, WaterGroup has manufactured and distributed water treatment and pump products across Canada and the USA.” Source: RevenueBase Database · checked Sep 30, 2026
7	Pure H2o	Partial evidence	Quebec, QC, CanadaHQ checked Sep 30, 2026	11-50	26 contacts →
	Partial evidence “Fondée en 2010, par Michel Blais (depuis 25 ans en affaire) et Antoine Élias (20 ans d`expérience en traitement d`eau), l`entreprise se spécialise dans l`installation de systèmes…” Source: RevenueBase Database · checked Sep 30, 2026
8	Streamgo Water Solutions INC	Partial evidence	Hamilton, ON, CanadaHQ checked Sep 30, 2026	51-200	25 contacts →
	Partial evidence “StreamGo is a full-service water company whose mission is safe, unlimited and economical water without impact to the environment.” Source: RevenueBase Database · checked Sep 30, 2026
9	Summit Water Group	Partial evidence	Cambridge, ON, CanadaHQ checked Sep 30, 2026	11-50	24 contacts →
	Partial evidence “Summit Water provides innovative solutions for the water industry.” Source: RevenueBase Database · checked Sep 30, 2026
10	Homewater	Partial evidence	Toronto, ON, CanadaHQ checked Sep 30, 2026	51-200	22 contacts →
	Partial evidence “We believe that clean, healthy water is a basic human need - not a luxury.” Source: RevenueBase Database · checked Sep 30, 2026
11	H2o Innovation Lama	Partial evidence	Québec, QC, CanadaHQ checked Sep 30, 2026	1,001-5,000	22 contacts →
	Partial evidence “H2O Innovation’s Lama product line specializes in the design and manufacturing of advanced water filtration solutions for agricultural and industrial applications.” Source: RevenueBase Database · checked Sep 30, 2026
12	BI Pure Water Canada INC	Partial evidence	Surrey, BC, CanadaHQ checked Sep 30, 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 30, 2026
13	Magnor	Strong evidence	Boucherville, QC, CanadaHQ checked Sep 30, 2026	11-50	12 contacts →
	Strong evidence “Established in 1965, Magnor specializes in the design and manufacture of water treatment equipment in various drinking and process water applications.” Source: RevenueBase Database · checked Sep 30, 2026
14	Dyna-Pro Environmental	Strong evidence	Winnipeg, MB, CanadaHQ checked Sep 30, 2026	11-50	12 contacts →
	Strong evidence “Dyna-Pro Environmental provides customers with the purest form of water using reverse osmosis to remove toxins and unwanted particles from any water source.” Source: RevenueBase Database · checked Sep 30, 2026
15	Aqua Pure Technologies	Partial evidence	Calgary, AB, CanadaHQ checked Sep 30, 2026	1-10	11 contacts →
	Partial evidence “Aqua Pure Technologies is a privately owned Canadian company headquartered in Calgary, Alberta, delivering advanced water treatment solutions for industrial applications.” Source: RevenueBase Database · checked Sep 30, 2026
16	Rainfresh	Partial evidence	Richmond Hill, ON, CanadaHQ checked Sep 30, 2026	11-50	10 contacts →
	Partial evidence “For over 59 years, Rainfresh has delivered state-of-the-art water treatment solutions to families and businesses across Canada.” Source: RevenueBase Database · checked Sep 30, 2026
17	Georgian Water & AIR	Indirect evidence	Barrie, ON, CanadaHQ checked Sep 30, 2026	1-10	10 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
18	Culligan Québec	Indirect evidence	Québec, QC, CanadaHQ checked Sep 30, 2026	51-200	9 contacts →
	Indirect evidence “Culligan au Québec : une histoire de confiance depuis plus de 70 ans!” Source: RevenueBase Database · checked Sep 30, 2026
19	Excalibur Water Systems INC	Strong evidence	Barrie, ON, CanadaHQ checked Sep 30, 2026	11-50	9 contacts →
	Strong evidence “Founded in 2006 by Al, Betty Ann, Robert, and Sam Dennis, Excalibur Water Systems is a Canadian water treatment and purification equipment manufacturer that ships internationally.” Source: RevenueBase Database · checked Sep 30, 2026
20	Tabl'eau Filtered Water	Strong evidence	Mississauga, ON, CanadaHQ checked Sep 30, 2026	1-10	9 contacts →
	Strong evidence “tabl’eau filtered water is a provider of state-of-the art water filtration and dispensing systems, supplying premium chilled sparkling, still, and ambient water to select…” Source: RevenueBase Database · checked Sep 30, 2026
21	H2oknow Water Group LTD	Strong evidence	Calgary, AB, CanadaHQ checked Sep 30, 2026	1-10	8 contacts →
	Strong evidence “We are focused on bringing our clients the best water purification systems available through providing exactly what our client needs based on their source water.” Source: RevenueBase Database · checked Sep 30, 2026
22	Aquatell INC	Partial evidence	London, ON, CanadaHQ checked Sep 30, 2026	1-10	8 contacts →
	Partial evidence “Since 2006, Aquatell has been a leader in the online residential and light commercial water treatment space, helping homeowners, cottage owners, hospitals, schools, and…” Source: RevenueBase Database · checked Sep 30, 2026
23	Forward Water Technologies Corp	Indirect evidence	Sarnia, ON, CanadaHQ checked Sep 30, 2026	1-10	7 contacts →
	Indirect evidence “Based on a technology invented at Queen's University by Dr.” Source: RevenueBase Database · checked Sep 30, 2026
24	5 Star Water Solutions	Strong evidence	Kitchener, ON, CanadaHQ checked Sep 30, 2026	1-10	7 contacts →
	Strong evidence “5 Star Water Solutions has proudly supplied quality water softeners, reverse osmosis drinking water systems, and water treatment options to our thousands of customers in the…” Source: RevenueBase Database · checked Sep 30, 2026
25	Maclellan Water Treatment And Pumps	Partial evidence	Odessa, ON, CanadaHQ checked Sep 30, 2026	1-10	7 contacts →
	Partial evidence “Established in 1982, MacLellan Water Technology is a full service water treatment company.” Source: RevenueBase Database · checked Sep 30, 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: reverse osmosis water purification system manufacturers. 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 reverse osmosis water purification system manufacturers.
Partial evidence: Its own public description names part of reverse osmosis water purification system manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name reverse osmosis water purification system manufacturers. 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 145 reverse osmosis water purification system manufacturers based in Canada

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Reverse osmosis water purification system manufacturers based in Canada at a glance

As of Sep 30, 2026

38.2%Verified-email coverage

11.9Average contacts per company

1-10Median size (employees)

5.5%Largest-city concentration · Calgary

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 145 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 reverse osmosis water purification system manufacturers, 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 “reverse osmosis water purification system manufacturers”. 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 reverse osmosis water purification system manufacturers), 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 reverse osmosis water purification system manufacturers, 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, 657 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 30, 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 reverse osmosis water purification system manufacturers, 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 reverse osmosis water purification system manufacturers are there based in Canada?

RevenueBase identified 145 reverse osmosis water purification system manufacturers 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?

Trojan Technologies, headquartered in London, tops this list with the largest team on record.

Which city has the most reverse osmosis water purification system manufacturers?

Calgary leads with 8 headquartered companies, followed by Cambridge (6) and Montreal (6).

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 657 verified decision-maker contacts tracked across these 145 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 30, 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.