Company lists · Data refreshed September 2026

Top 25 Reverse osmosis plant construction companies based in the United Kingdom

RevenueBase identified 123 company matches for reverse osmosis plant construction companies associated with the United Kingdom as of September 2026 and tracks 2,297 professional contacts across them, including 1,062 with verified work emails. London is the largest hub.

This list covers company matches for reverse osmosis plant construction companies 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 September 16, 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 Sep 16, 2026 How this list was built
123Companies
2,297Contacts tracked
1,062Verified emails
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The 25 largest reverse osmosis plant construction companies based in the United Kingdom

Ranked by team size
Top 25 of 123 company matches for reverse osmosis plant construction companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 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 matchInverness Highlands, United KingdomHQ recorded Sep 16, 2026501-1,000498 contacts →

Exact match

“RSE is a trusted clean water technology company, developing market leading products and solutions for purifying drinking water, recycling wastewater and cleaning water in…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2Exact matchSurrey, United KingdomHQ recorded Sep 16, 2026501-1,000178 contacts →

Exact match

“Biwater is a world leader in treated water, providing large-scale water and wastewater solutions for clients across the world.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3Exact matchCoventry, United KingdomHQ recorded Sep 16, 20261,001-5,000137 contacts →

Exact match

“Severn Trent Services offer a range of services to municipal and industrial clients, including the Ministry of Defence and the Coal Authority, for design, build and operation of…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4Exact matchBirmingham, United KingdomHQ recorded Sep 16, 202651-200113 contacts →

Exact match

“Enpure is a process engineering company specializing in water, wastewater and sludge treatment as well as waste-to-energy solutions with a global presence.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5Exact matchRochdale, United KingdomHQ recorded Sep 16, 202651-20080 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 · Sep 16, 2026 · View company records in RevenueBase
6Exact matchAlfreton, United KingdomHQ recorded Sep 16, 2026201-50075 contacts →

Exact match

“Envirogen Group is a global leader in industrial water treatment and process filtration solutions.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
7Exact matchMonmouth, United KingdomHQ recorded Sep 16, 202651-20075 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 · Sep 16, 2026 · View company records in RevenueBase
8Exact matchEnfield, United KingdomHQ recorded Sep 16, 202651-20070 contacts →

Exact match

“Welcome to Gel Engineering.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9Exact matchStepps, United KingdomHQ recorded Sep 16, 2026201-50058 contacts →

Exact match

“How we manage water and wastewater systems now will be critical for our communities and ecosystems for many generations to come.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
10Exact matchHigh Wycombe, United KingdomHQ recorded Sep 16, 202651-20050 contacts →

Exact match

“Hydrotec is the UK’s leading company in the design and manufacture of water treatment products for the building services industry.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
11Exact matchWolverhampton, United KingdomHQ recorded Sep 16, 202651-20040 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 16, 202651-20040 contacts →

Exact match

“Hydro Industries.generating clean water Clean Water is a limited natural resource essential for life and economic growth.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13Exact matchColchester, United KingdomHQ recorded Sep 16, 202651-20026 contacts →

Exact match

“Lubron Water Technology UK is part of the European Market leading water treatment provider, Lubron Group, which has subsidiaries in the Netherlands, Germany and Belgium.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14Exact matchRickmansworth, United KingdomHQ recorded Sep 16, 202651-20023 contacts →

Exact match

“Smoothflow have been setting benchmark standards since our inception in 1992 and has grown into one of the most highly regarded providers of water treatment, commissioning &…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15Exact matchCastleford, United KingdomHQ recorded Sep 16, 202611-5021 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 · Sep 16, 2026 · View company records in RevenueBase
16Exact matchWesthill, United KingdomHQ recorded Sep 16, 202611-5018 contacts →

Exact match

“Offshore Water Management Ltd (OWM) is a consultancy and services company delivering a complete range of solutions for the provision of safe drinking water to the offshore and…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17Exact matchSouthampton, United KingdomHQ recorded Sep 16, 2026501-1,00016 contacts →

Exact match

“Te-Tech Process Solutions Ltd has been established to provide a dedicated service to existing and new clients in the municipal water, industrial and commercial sectors.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18Exact matchNewry, United KingdomHQ recorded Sep 16, 202611-5014 contacts →

Exact match

“Viltra specialises in designing, manufacturing and installing wastewater treatment solutions for a wide range of sectors throughout the UK and Ireland, including domestic…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19Exact matchTaunton, United KingdomHQ recorded Sep 16, 202611-5014 contacts →

Exact match

“WCI Group Ltd is the leading expert in water and wastewater engineering, delivering innovative solutions with over four decades of expertise.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20Exact matchAlton, United KingdomHQ recorded Sep 16, 202611-5013 contacts →

Exact match

“Plantwork Systems Ltd (PWS) provides water and wastewater treatment solutions with a strong focus on sustainability, innovation and cost efficiency.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
21Exact matchHigh Wycombe Bucks, United KingdomHQ recorded Sep 16, 20261-1012 contacts →

Exact match

“ESMIL Process Systems is an award winning Construction company located in United Kingdom.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
22Exact matchWellingborough, United KingdomHQ recorded Sep 16, 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 · Sep 16, 2026 · View company records in RevenueBase
23Exact matchHinckley, United KingdomHQ recorded Sep 16, 202611-5010 contacts →

Exact match

“Evergreen Water Solutions works closely with a number of international engineering companies whose expertise is in scalable wastewater treatment systems and containerised…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
24Exact matchAylesbury, United KingdomHQ recorded Sep 16, 202611-5010 contacts →

Exact match

“Wycombe Water Ltd.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
25Exact matchLedbury, United KingdomHQ recorded Sep 16, 202611-509 contacts →

Exact match

“PureTec Separations is a leader in technologies and customer experience within the water treatment and product processing industries.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase

Showing 25 of 123 reverse osmosis plant construction companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,062 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Reverse osmosis plant construction companies based in the United Kingdom at a glance

As of Sep 16, 2026
46.2%Verified-email coverage
18.7Average contacts per company
11-50Median size (employees)
6.5%Largest-city concentration · London
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
52
11-50
45
51-200
18
201-500
2
501-1,000
5
1,001-5,000
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 123 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 plant construction companies” 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 1,062 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 September 16, 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 plant construction companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many reverse osmosis plant construction companies are there based in the United Kingdom?

RevenueBase identified 123 company matches for reverse osmosis plant construction companies associated with the United Kingdom as of September 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?

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

Which city has the most reverse osmosis plant construction companies?

London leads with 8 company records, followed by Coventry (3) and Manchester (3).

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 1,062 professional contacts with verified work emails tracked across these 123 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 September 16, 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.