Company lists · Data refreshed November 2026

Top 21 Reverse osmosis water producers based in the United Kingdom

RevenueBase identified 46 company matches for reverse osmosis water producers associated with the United Kingdom as of November 2026 and tracks 682 professional contacts across them, including 330 with verified work emails. London is the largest hub.

This list covers company matches for reverse osmosis water producers associated with the United Kingdom, 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 November 6, 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 Nov 6, 2026 How this list was built
46Companies
682Contacts tracked
330Verified emails
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The 21 largest reverse osmosis water producers based in the United Kingdom

Ranked by team size
Top 21 of 46 company matches for reverse osmosis water producers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchDereham, United KingdomHQ recorded Nov 6, 2026501-1,000258 contacts →

Exact match

“Culligan UK delivers innovative, high-quality water solutions to homes and businesses across the United Kingdom.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMonmouth, United KingdomHQ recorded Nov 6, 202651-20087 contacts →

Exact match

“At Siltbuster Ltd, we operate the UK’s largest rental fleet of water treatment systems, setting the industry benchmark for rapid, reliable, and cost-effective solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchRochdale, United KingdomHQ recorded Nov 6, 202651-20086 contacts →

Exact match

“Salt Separation Services Limited is an independent water treatment company specialising in the design, manufacture, installation and commissioning of water treatment systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchCastleford, United KingdomHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“At Excel Water, we pride ourselves on our unwavering commitment to delivering exceptional water treatment and purification solutions tailored to the diverse needs of our clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchWellingborough, United KingdomHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“ADEPT Pure Water Limited are specialists in the design, manufacture, commission, installation and Service of Water Purification and Treatment Plant and equipment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMelton Mowbray, United KingdomHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Kirton design and build state-of-the-art solutions that help industrial, commercial and domestic clients use water safely, more efficiently and in compliance with ever increasing…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchBristol, United KingdomHQ recorded Nov 6, 202651-2005 contacts →

Exact match

“Here at the Pure Water People we believe everyone should enjoy the health and well-being benefits of water as pure as nature intended and pride ourselves on bringing you the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchCanterbury, United KingdomHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Specialists in | Water Softeners | Water Filtration | Hard Water Solutions | Commercial and Industrial.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchKilbirnie, United KingdomHQ recorded Nov 6, 202611-505 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Nov 6, 202611-505 contacts →

Exact match

“United Global Water Holdings Limited develops and sponsors distinct technologies and services for water purification and wastewater treatment as well as for resource recovery and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchKing's Lynn, United KingdomHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Water purification and recycling specialists.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchHarlow, United KingdomHQ recorded Nov 6, 202651-2004 contacts →

Exact match

“We are proud of who we are, what we do and why we do it.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBlackwood, United KingdomHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Established since 1991, General Waters Uk Ltd is based in South Wales.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchAmersham, United KingdomHQ recorded Nov 6, 202611-503 contacts →

Exact match

“We can offer process design and turnkey construction capability in all aspects of water treatment plant including pre-treatment, reverse osmosis, ion exchange, membrane…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchPeterborough, United KingdomHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Xion Water Technologies provide a comprehensive range of water treatment solutions and services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchEast Horsley, United KingdomHQ recorded Nov 6, 202611-502 contacts →

Exact match

“Aquathin is the leading provider of Reverse Osmosis water purification systems and the patented RODI system (combining RO with Dionization) for Ultra pure and clinically safe…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBirmingham, United KingdomHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Regal Flow is an online retailer specialising in premium water treatment products from world-leading manufacturers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchColchester, United KingdomHQ recorded Nov 6, 202611-501 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBristol, United KingdomHQ recorded Nov 6, 20261-101 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchEnfield, United KingdomHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Hommix UK is a North London based water filtration company specialising in water softening, filtration and quality kitchen 3-way taps.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Aquama & Renewables is a hub of innovation and sustainability in the field of desalination.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 21 of 46 reverse osmosis water producers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 330 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Reverse osmosis water producers based in the United Kingdom at a glance

As of Nov 6, 2026
48.4%Verified-email coverage
14.8Average contacts per company
11-50Median size (employees)
8.7%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
22
11-50
15
51-200
6
201-500
1
501-1,000
1

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 46 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 the United Kingdom whose business descriptions match “reverse osmosis water producers” 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 330 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 November 6, 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 “reverse osmosis water producers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many reverse osmosis water producers are there based in the United Kingdom?

RevenueBase identified 46 company matches for reverse osmosis water producers associated with the United Kingdom as of November 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?

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

Which city has the most reverse osmosis water producers?

London leads with 4 company records, followed by Bristol (2) and Colchester (2).

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 330 professional contacts with verified work emails tracked across these 46 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 November 6, 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.