Company lists · Data refreshed September 2026
Top 25 Desalination companies based in the United Kingdom
The United Kingdom desalination companies directory lists 98 companies that design, build, operate, or supply desalination systems and related services. It includes 2,005 contacts and 870 email addresses, with London as the single most-represented city among the companies listed. The directory was updated in September 2026.
Desalination companies remove dissolved salts and other minerals from seawater, brackish water, or other water sources to produce water for municipal, industrial, agricultural, or commercial use. This list covers companies that develop, manufacture, install, operate, maintain, or supply desalination plants, equipment, technologies, and related services. Ranked by team size, largest first. Data current as of September 7, 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.
The 25 largest desalination companies based in the United Kingdom
Ranked by team size| # | Company | RevenueBase Smart Search | Contacts | ||
|---|---|---|---|---|---|
| 1 | Indirect evidence | 498 contacts → | |||
“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: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 2 | Indirect evidence | 231 contacts → | |||
“Culligan UK delivers innovative, high-quality water solutions to homes and businesses across the United Kingdom.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 3 | Indirect evidence | 178 contacts → | |||
“Biwater is a world leader in treated water, providing large-scale water and wastewater solutions for clients across the world.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 4 | Indirect evidence | 137 contacts → | |||
“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…” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 5 | Indirect evidence | 80 contacts → | |||
“Salt Separation Services Limited is an independent water treatment company specialising in the design, manufacture, installation and commissioning of water treatment systems.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 6 | Indirect evidence | 75 contacts → | |||
“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.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 7 | Indirect evidence | 40 contacts → | |||
“Hydro Industries.generating clean water Clean Water is a limited natural resource essential for life and economic growth.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 8 | Indirect evidence | 38 contacts → | |||
“BWA is a technology-led specialty chemicals company who provides sustainable water management solutions to increase our customers’ competitive advantage.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 9 | Indirect evidence | 36 contacts → | |||
“Elentec develops and supplies electrochemical water treatment systems - together with appropriate separation technology.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 10 | Indirect evidence | 21 contacts → | |||
“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.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 11 | Strong evidence | 16 contacts → | |||
“Waterwhelm’s breakthrough water re-use and desalination technology operates at significantly lower pressures compared to reverse osmosis, resulting in lower capital and…” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 12 | Indirect evidence | 15 contacts → | |||
“Salinity Solutions is a University of Birmingham spin-out, founded in 2021, focused on solving two of the world’s most pressing challenges: clean water and sustainable energy.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 13 | Indirect evidence | 15 contacts → | |||
“We specialise in water treatment and disinfection, operating in almost every industry where water treatment is required.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 14 | Indirect evidence | 14 contacts → | |||
“Aquabio is a pioneering company born with a passion for innovation combined with a strong ethos for environmental sustainability.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 15 | Indirect evidence | 13 contacts → | |||
“Plantwork Systems Ltd (PWS) provides water and wastewater treatment solutions with a strong focus on sustainability, innovation and cost efficiency.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 16 | Indirect evidence | 11 contacts → | |||
“ADEPT Pure Water Limited are specialists in the design, manufacture, commission, installation and Service of Water Purification and Treatment Plant and equipment.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 17 | Indirect evidence | 9 contacts → | |||
“B&V Chemicals offer water treatment companies worldwide the opportunity to expand their product range and receive industry leading technical back-up.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 18 | Indirect evidence | 9 contacts → | |||
“NovNat Tech is an advanced materials and engineering design company developing solutions for the most critical problems of today and tomorrow.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 19 | Indirect evidence | 8 contacts → | |||
“We are expert design & build engineers in ultrafiltration, nanofiltration, UV-C and AOP water treatment, purification, and sanitisation systems integration, specialist maintenance…” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 20 | Indirect evidence | 8 contacts → | |||
“At Kelly Tanks, we specialise in delivering simple, innovative, and cost-effective water treatment solutions that protect our shared environment.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 21 | Strong evidence | 7 contacts → | |||
“LAT Water, a British technology company developing and implementing innovative approaches to renewable energy powered desalination/water treatment.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 22 | Indirect evidence | 7 contacts → | |||
“Modern Water is a pioneering and innovative technology company, specialising in membrane water treatment solutions and advanced monitoring products.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 23 | Indirect evidence | 6 contacts → | |||
“Adaptive Process Solutions (APS) is based in Aberdeen, Scotland and offers light weight, compact offshore water treatment equipment for retrofit to existing brownfield produced…” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 24 | Indirect evidence | 6 contacts → | |||
“Treatment4Water is a market-leading provider of chemicals to the industrial water treatment industry.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 25 | Indirect evidence | 6 contacts → | |||
“At Fluid Science Limited, we take pride in supplying high quality solutions for industry.” Source: company website · checked Sep 7, 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: desalination 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 desalination companies.
- Partial evidence
- Its own public description names part of desalination companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name desalination 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 98 desalination companies based in the United Kingdom
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Desalination companies based in the United Kingdom at a glance
As of Sep 7, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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 desalination 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.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “desalination 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 desalination 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 desalination companies, and records with no verified work email. Companies headquartered outside United Kingdom 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, 870 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 7, 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
How many desalination companies are in the United Kingdom directory?
The directory lists 98 desalination companies based in the United Kingdom. It also includes 2,005 contacts and 870 email addresses.
Which city has the most desalination companies in the directory?
London is the single most-represented city among the companies in the directory.
What do desalination companies provide?
Desalination companies provide systems and services that remove dissolved salts and minerals from water. Their work can include plant design, equipment supply, construction, operation, maintenance, and related engineering services.
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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.