Company lists · Data refreshed September 2026
Top 25 Reverse osmosis system installers worldwide
RevenueBase identified 2,804 reverse osmosis system installers worldwide as of September 2026 and tracks 20,153 professional contacts across them, including 2,669 with verified work emails. The United States is the largest market and Delhi the largest hub.
This list covers reverse osmosis system installers 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 21, 2026. Country and city lists for reverse osmosis system installers 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 reverse osmosis system installers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 488 contacts → | ||||
Indirect evidence “Eden, a proud part of the Culligan family, provides instant access to cleaner, safer, and better-tasting water through our unparalleled expertise in sustainability, science, and…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 374 contacts → | ||||
Partial evidence “Founded in 1970, Kinetico pioneered the development of non-electric, fully automatic water treatment systems.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 371 contacts → | ||||
Indirect evidence “Waternet Su Hizmetleri A.Ş, 2012 yılında sağlıklı yaşamın temel gerekliliklerinden biri olan sağlıklı suyu en güvenilir ve kolay şekilde tüketici ile buluşturmak amacıyla…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 354 contacts → | ||||
Indirect evidence “At Culligan Water Conditioning of Jacksonville FL, we not only aim to provide better water to the community, we are also committed to building a better, more sustainable world.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 231 contacts → | ||||
Indirect evidence “Culligan UK delivers innovative, high-quality water solutions to homes and businesses across the United Kingdom.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 221 contacts → | ||||
Indirect evidence “Esli PWG Ltd.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 115 contacts → | ||||
Indirect evidence “Wasser ist nicht nur eine kostbare Lebensressource, sondern auch eine der großen Herausforderungen dieses Jahrhunderts.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 104 contacts → | ||||
Partial evidence “At Billi, we design and manufacture a range of energy efficient filtered water systems that offer our customers the very best in innovation, superior performance and reliability.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 95 contacts → | ||||
Indirect evidence “LEXCRU Water Tech Pvt.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 94 contacts → | ||||
Indirect evidence “Why Pureflow?” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 88 contacts → | ||||
Indirect evidence “En +Pura®, no vendemos agua, vendemos fuentes de salud.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 80 contacts → | ||||
Partial evidence “Salt Separation Services Limited is an independent water treatment company specialising in the design, manufacture, installation and commissioning of water treatment systems.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 77 contacts → | ||||
Strong 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 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 75 contacts → | ||||
Indirect evidence “At JoJo, we are dedicated to providing all-inclusive water solutions that enhance the quality of life.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 74 contacts → | ||||
Indirect evidence “Purifika es agua purificada de calidad superior para más personas, de la manera más práctica, ecológica y económica.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 71 contacts → | ||||
Partial evidence “Atlas Filtri is a dynamic Italian company: designing, developing, and producing components for filtration systems and equipment for water treatment applicable to domestic and…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 70 contacts → | ||||
Partial evidence “Puretec is a leading supplier of comprehensive water filtration systems across Australia and New Zealand, providing expertly engineered solutions tailored for residential…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 65 contacts → | ||||
Partial evidence “Just Water is the recognised industry leader in providing drinking-water and filtration systems for the workplace and at home.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 63 contacts → | ||||
Indirect evidence “Iedere toepassing van water vraagt om een specialistische blik op alle aspecten van het watergebruik.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 62 contacts → | ||||
Indirect evidence “For 50 years, Marlo Incorporated has engineered and manufactured high quality water treatment equipment for a wide variety of residential, commercial, and industrial applications.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 62 contacts → | ||||
Partial evidence “Puragain Water is a family owned business that takes pride in offering the very best in water filtration systems.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 61 contacts → | ||||
Partial evidence “Firma ProMinent Systems spol.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 59 contacts → | ||||
Indirect evidence “AmeriWater is the recognized specialist in the design, manufacturing, installation and supply of water treatment equipment and services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 59 contacts → | ||||
Indirect evidence “At Aquasana we believe clean water and a healthy environment are the most important components to healthy living and overall well-being.” Source: RevenueBase Database · checked Sep 21, 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: reverse osmosis system installers. 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 system installers.
- Partial evidence
- Its own public description names part of reverse osmosis system installers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name reverse osmosis system installers. 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 2,804 reverse osmosis system installers worldwide
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Reverse osmosis system installers worldwide at a glance
As of Sep 21, 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 reverse osmosis system installers, 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 reverse osmosis system installers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “reverse osmosis system installers”. 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 system installers), 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 system installers, 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, 2,669 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 21, 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.
Reverse osmosis system installers by location
10 lists · largest firstEvery Reverse osmosis system installers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Reverse osmosis system installers based in the United States802
- Reverse osmosis system installers based in India464
- Reverse osmosis system installers based in Canada93
- Reverse osmosis system installers based in Brazil82
- Reverse osmosis system installers based in Spain68
- Reverse osmosis system installers based in Italy65
- Reverse osmosis system installers based in Australia54
- Reverse osmosis system installers based in Germany51
- Reverse osmosis system installers based in France50
- Reverse osmosis system installers based in the United Kingdom49
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 system installers, 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 system installers are there worldwide?
RevenueBase identified 2,804 reverse osmosis system installers 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?
Eden Springs, headquartered in Barcelona, tops this list with the largest team on record.
Which country has the most reverse osmosis system installers?
The United States leads with 802 companies, followed by India (464) and Canada (93). Every reverse osmosis system installers list by country and city is linked on this page.
Which city has the most reverse osmosis system installers?
Delhi leads with 42 headquartered companies, followed by Chennai (32) and Ahmedabad (31).
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 2,669 verified decision-maker contacts tracked across these 2,804 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 21, 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.