Company lists · Data refreshed September 2026

Top 25 Water treatment equipment manufacturers based in the United Kingdom

Name: Water treatment equipment manufacturers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 280 companies tracked

RevenueBase identified 280 water treatment equipment manufacturers headquartered in the United Kingdom as of September 2026 and tracks 4,489 professional contacts across them, including 1,993 with verified work emails. London is the largest hub.

This list covers water treatment equipment manufacturers headquartered in the United Kingdom, 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 19, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

280Companies

4,489Contacts tracked

1,993Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest water treatment equipment manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 280 water treatment equipment manufacturers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to water treatment equipment manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	RSE	Partial evidence	Inverness Highlands, United KingdomHQ checked Sep 19, 2026	501-1,000	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 19, 2026
2	Xylem Water Solutions UK & Ireland	Partial evidence	Nottingham, United KingdomHQ checked Sep 19, 2026	501-1,000	319 contacts →
	Partial evidence “Xylem is a leading global water solutions company dedicated to advancing sustainable impact and empowering the people who make water work every day.” Source: RevenueBase Database · checked Sep 19, 2026
3	Culligan UK	Partial evidence	Dereham, United KingdomHQ checked Sep 19, 2026	501-1,000	231 contacts →
	Partial evidence “Culligan UK delivers innovative, high-quality water solutions to homes and businesses across the United Kingdom.” Source: RevenueBase Database · checked Sep 19, 2026
4	Severn Trent Services	Indirect evidence	Coventry, United KingdomHQ checked Sep 19, 2026	1,001-5,000	137 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 19, 2026
5	Enpure	Strong evidence	Birmingham, United KingdomHQ checked Sep 19, 2026	51-200	113 contacts →
	Strong evidence “Enpure is a process engineering company specializing in water, wastewater and sludge treatment as well as waste-to-energy solutions with a global presence.” Source: RevenueBase Database · checked Sep 19, 2026
6	Salt Separation Services Limited	Strong evidence	Rochdale, United KingdomHQ checked Sep 19, 2026	51-200	80 contacts →
	Strong 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 19, 2026
7	Feedwater Limited	Strong evidence	Moreton, United KingdomHQ checked Sep 19, 2026	51-200	79 contacts →
	Strong evidence “Feedwater Ltd is a UK Water Treatment Company, established in 1976 specifically to supply products and services for the treatment of water for steam boilers, cooling towers…” Source: RevenueBase Database · checked Sep 19, 2026
8	Envirogen Group	Strong evidence	Alfreton, United KingdomHQ checked Sep 19, 2026	201-500	75 contacts →
	Strong evidence “Envirogen Group is a global leader in industrial water treatment and process filtration solutions.” Source: RevenueBase Database · checked Sep 19, 2026
9	Siltbuster LTD	Strong evidence	Monmouth, United KingdomHQ checked Sep 19, 2026	51-200	75 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 19, 2026
10	Richard Alan	Partial evidence	Dewsbury, United KingdomHQ checked Sep 19, 2026	51-200	74 contacts →
	Partial evidence “Established in 1970, the West Yorkshire-based Richard Alan Group is a portfolio of businesses providing high-quality Engineering Design, Manufacture, Installation and Servicing to…” Source: RevenueBase Database · checked Sep 19, 2026
11	Jacopa Limited	Indirect evidence	West Bromwich, United KingdomHQ checked Sep 19, 2026	51-200	73 contacts →
	Indirect evidence “Many of the best known, most respected and reliable brand names in the wastewater industry are part of Jacopa's heritage.” Source: RevenueBase Database · checked Sep 19, 2026
12	Lintott Control Systems	Partial evidence	Norwich, United KingdomHQ checked Sep 19, 2026	51-200	71 contacts →
	Partial evidence “Lintott is a specialist, customer-centric designer & manufacturer of elegant, factory-built, packaged process solutions for Blue-Chip Utility & Process Industry businesses.” Source: RevenueBase Database · checked Sep 19, 2026
13	WES LTD	Strong evidence	Basingstoke, United KingdomHQ checked Sep 19, 2026	51-200	57 contacts →
	Strong evidence “We design, manufacture and install innovative chemical dosing solutions for the UK water industry and industrial manufacturing companies.” Source: RevenueBase Database · checked Sep 19, 2026
14	Fileder Filter Systems	Indirect evidence	Maidstone, United KingdomHQ checked Sep 19, 2026	51-200	53 contacts →
	Indirect evidence “In short, we’re 'easy to deal with'.” Source: RevenueBase Database · checked Sep 19, 2026
15	Hydrotec Water Treatment Specialists	Strong evidence	High Wycombe, United KingdomHQ checked Sep 19, 2026	51-200	50 contacts →
	Strong evidence “Hydrotec is the UK’s leading company in the design and manufacture of water treatment products for the building services industry.” Source: RevenueBase Database · checked Sep 19, 2026
16	T-T Pumps LTD	Indirect evidence	Woore, United KingdomHQ checked Sep 19, 2026	51-200	49 contacts →
	Indirect evidence “Established in 1959, T-T started out as a general engineering company before growing to consist of 6 divisions – T-T Pumps, T-T Controls and Automation, T-T Flow Valves, T-T…” Source: RevenueBase Database · checked Sep 19, 2026
17	Huber Technology UK & Ireland	Strong evidence	Chippenham, United KingdomHQ checked Sep 19, 2026	51-200	48 contacts →
	Strong evidence “HUBER Technology was incorporated in the UK in 1993 as a wholly owned subsidiary of Huber SE- Huber UK & Ireland Limited, the manufacturers of the ROTAMAT range of waste water…” Source: RevenueBase Database · checked Sep 19, 2026
18	Atac Solutions LTD	Partial evidence	Maidstone, United KingdomHQ checked Sep 19, 2026	11-50	44 contacts →
	Partial evidence “ATAC Solutions Ltd is a leading UK environmental services company specialising in wastewater services and wastewater equipment on a capital purchase or hire basis.” Source: RevenueBase Database · checked Sep 19, 2026
19	Scotmas	Strong evidence	Kelso, United KingdomHQ checked Sep 19, 2026	51-200	43 contacts →
	Strong evidence “Scotmas Group is a leading manufacturer of Chlorine Dioxide products and dosing systems designed for optimal disinfection and water treatment.” Source: RevenueBase Database · checked Sep 19, 2026
20	Billi UK	Strong evidence	Wolverhampton, United KingdomHQ checked Sep 19, 2026	51-200	40 contacts →
	Strong 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 19, 2026
21	Hydro Industries Limited	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	40 contacts →
	Partial evidence “Hydro Industries.generating clean water Clean Water is a limited natural resource essential for life and economic growth.” Source: RevenueBase Database · checked Sep 19, 2026
22	Water Treatment Products LTD	Strong evidence	Blaenavon, United KingdomHQ checked Sep 19, 2026	51-200	40 contacts →
	Strong evidence “Water Treatment Products Ltd, established in formulate and manufacture speciality chemicals for a wide range of water treatment companies and applications.” Source: RevenueBase Database · checked Sep 19, 2026
23	Prominent UK & Ireland	Strong evidence	Ashby-de-la-zouch, United KingdomHQ checked Sep 19, 2026	11-50	36 contacts →
	Strong evidence “The ProMinent Group is a manufacturer of components and systems for metering as well as a reliable solution partner for water treatment.” Source: RevenueBase Database · checked Sep 19, 2026
24	Elentec	Strong evidence	Bethesda, United KingdomHQ checked Sep 19, 2026	11-50	36 contacts →
	Strong evidence “Elentec develops and supplies electrochemical water treatment systems - together with appropriate separation technology.” Source: RevenueBase Database · checked Sep 19, 2026
25	Lutz-Jesco	Partial evidence	Coventry, United KingdomHQ checked Sep 19, 2026	201-500	34 contacts →
	Partial evidence “Lutz-Jesco have been manufacturing dosing pumps - solenoid, stepper, mechanical diaphragm and piston types, dosing accessories, gas chlorination equipment and chlorine dioxide…” Source: RevenueBase Database · checked Sep 19, 2026

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: water treatment equipment manufacturers. 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 water treatment equipment manufacturers.
Partial evidence: Its own public description names part of water treatment equipment manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water treatment equipment manufacturers. 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 280 water treatment equipment manufacturers based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,993 reachable decision-makers.

Free signup · no credit card

View the full list →

Water treatment equipment manufacturers based in the United Kingdom at a glance

As of Sep 19, 2026

44.4%Verified-email coverage

16.0Average contacts per company

11-50Median size (employees)

4.6%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

127

11-50

51-200

201-500

501-1,000

1,001-5,000

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 280 companies.

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 water treatment equipment manufacturers, 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 “water treatment equipment manufacturers”. 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 water treatment equipment manufacturers), 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 water treatment equipment manufacturers, 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, 1,993 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 19, 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

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 water treatment equipment manufacturers, 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 water treatment equipment manufacturers are there based in the United Kingdom?

RevenueBase identified 280 water treatment equipment manufacturers headquartered in the United Kingdom 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?

RSE, headquartered in Inverness Highlands, tops this list with the largest team on record.

Which city has the most water treatment equipment manufacturers?

London leads with 13 headquartered companies, followed by Birmingham (5) and Coventry (5).

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 1,993 verified decision-maker contacts tracked across these 280 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 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 280 water treatment equipment manufacturers based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Water treatment equipment manufacturers by geography

Browse the directory

Browse: Companies home · All United Kingdom lists · All Water treatment equipment manufacturers lists · New lists

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.