Company lists · Data refreshed September 2026
Top 25 Well water treatment companies worldwide
RevenueBase identified 3,242 well water treatment companies worldwide as of September 2026 and tracks 27,659 professional contacts across them, including 6,119 with verified work emails. The United States is the largest market and Karachi the largest hub.
This list covers well water treatment companies worldwide, 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. Country and city lists for well water treatment companies follow the table.
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.
The 25 largest well water treatment companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 716 contacts → | ||||
Strong evidence “Our Vision To continuously advance water treatment, ensuring everyone has access to clean water, globally.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 650 contacts → | ||||
Indirect evidence “Sobre a BAUMINAS Fundada há mais de 60 anos, a BAUMINAS é uma empresa orgulhosamente nacional, com ampla experiência na fabricação de produtos para o tratamento de águas e tem…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 607 contacts → | ||||
Indirect evidence “Spécialiste du traitement de l’eau depuis plus de 80 ans, Culligan apporte chaque jour une eau de qualité aux particuliers, aux entreprises et aux collectivités.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 567 contacts → | ||||
Strong evidence “BWT France is one of the largest subsidiaries of Austrian group Best Water Technology ( BWT), the European leader in water treatment.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 498 contacts → | ||||
Partial evidence “RSE is a trusted clean water technology company, developing market leading products and solutions for purifying drinking water, recycling wastewater and cleaning water in…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 374 contacts → | ||||
Strong evidence “Founded in 1970, Kinetico pioneered the development of non-electric, fully automatic water treatment systems.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 290 contacts → | ||||
Partial evidence “For over 96 years, MECO has been a world leader in designing and constructing engineered solutions for water purification.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 265 contacts → | ||||
Strong evidence “Culligan has over 80 years of experience in the design and distribution of water treatment systems for residential, commercial and industrial applications.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 221 contacts → | ||||
Indirect evidence “Esli PWG Ltd.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 195 contacts → | ||||
Strong evidence “Formed in 2017 following the consolidation of independent water treatment solution providers Emefcy and RWL Water, Fluence Corporation was established with the vision of becoming…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 170 contacts → | ||||
Partial evidence “Nobody wants to worry about whether their wastewater is contaminating nearby rivers, streams, and wells.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 157 contacts → | ||||
Indirect evidence “Know-how seit über 75 Jahren: Die Grünbeck AG bietet sowohl bewährte als auch innovative Produkte zur Trinkwasseraufbereitung im Bereich Enthärtungs, Filter- und Dosiertechnik…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 125 contacts → | ||||
Strong evidence “Ekopak provides innovative solutions for industrial water treatment and wastewater treatment.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 119 contacts → | ||||
Strong evidence “Canature WaterGroup™ is a dynamic leader in the North American water treatment industry.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 106 contacts → | ||||
Indirect evidence “GWTT is one of the only U.S.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 95 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 89 contacts → | ||||
Strong evidence “Washnah Trading and Contracting is a water treatment firm operating in the Kingdom of Saudi Arabia since more than 30 years with its strong technical efforts and team growing…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 88 contacts → | ||||
Indirect evidence “Aqua Mex es una organización cuyo origen se remonta a 1962 con una meta en firme: diseñar, fabricar y vender los mejores equipos de tratamiento de agua en su totalidad; logrando…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 87 contacts → | ||||
Partial evidence “Vessco Water is a family of companies that brings innovative, synergy based water solutions and services to our customers around the United States.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 82 contacts → | ||||
Strong evidence “RWB Water is a multidisciplinary organisation with extra know how in the field of water treatment.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 81 contacts → | ||||
Strong evidence “MENA-Water is an engineering and manufacturing company that provides innovative solutions and services in the fields of water and wastewater treatment.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 80 contacts → | ||||
Strong evidence “Water and Wastewater Equipment Company has been providing efficient, cost-effective and compliant solutions to water and wastewater treatment applications for over 30 years.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 79 contacts → | ||||
Indirect evidence “One name.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 78 contacts → | ||||
Partial evidence “Kent Water Purification Systems is a leading supplier of water purification systems in the Greater Toronto Area.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 77 contacts → | ||||
Partial evidence “AQUAPHOR water filters is a leading technology developer and manufacturer of drinking water purifiers, water softeners, and commercial reverse osmosis systems.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
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: well water treatment companies. 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 well water treatment companies.
- Partial evidence
- Its own public description names part of well water treatment companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name well water treatment companies. 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 3,242 well water treatment companies worldwide
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Well water treatment companies worldwide at a glance
As of Sep 22, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 well water treatment companies, 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.
- Coverage
- Every country. Country and city lists for well water treatment companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “well water treatment companies”. 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 well water treatment companies), 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 well water treatment companies, and records with no verified work email.
- 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, 6,119 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.
Well water treatment companies by location
13 lists · largest firstEvery Well water treatment companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Well water treatment companies based in the United States1,125
- Well water treatment companies based in India210
- Well water treatment companies based in Canada128
- Well water treatment companies based in Italy95
- Well water treatment companies based in the United Kingdom95
- Well water treatment companies based in France77
- Well water treatment companies based in Brazil76
- Well water treatment companies based in Germany66
- Well water treatment companies based in Spain66
- Well water treatment companies based in Mexico54
- Well water treatment companies based in Australia50
- Well water treatment companies based in the Netherlands39
- Well water treatment companies based in Belgium32
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 well water treatment companies, 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 well water treatment companies are there worldwide?
RevenueBase identified 3,242 well water treatment companies worldwide 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 country has the most well water treatment companies?
The United States leads with 1,125 companies, followed by India (210) and Canada (128). Every well water treatment companies list by country and city is linked on this page.
Which city has the most well water treatment companies?
Karachi leads with 17 headquartered companies, followed by Dubai (14) and Lima (14).
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 6,119 verified decision-maker contacts tracked across these 3,242 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.