Company lists · Data refreshed September 2026

Top 25 Industrial water suppliers based in the United Kingdom

Name: Industrial water suppliers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 491 companies tracked

RevenueBase identified 491 industrial water suppliers headquartered in the United Kingdom as of September 2026 and tracks 20,004 professional contacts across them, including 8,152 with verified work emails. London is the largest hub.

This list covers industrial water suppliers 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 17, 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 17, 2026 86% judged on-target in blind review

491Companies

20,004Contacts tracked

8,152Verified emails

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The 25 largest industrial water suppliers based in the United Kingdom

Ranked by team size

Top 25 of 491 industrial water suppliers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial water suppliers: 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	Pentair	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	5,001-10,000	6,636 contacts →
	Partial evidence “At Pentair, we help the world sustainably move, improve, and enjoy water, life’s most essential resource.” Source: RevenueBase Database · checked Sep 17, 2026
2	Severn Trent	Partial evidence	Coventry, United KingdomHQ checked Sep 17, 2026	5,001-10,000	5,563 contacts →
	Partial evidence “Water is wonderful.” Source: RevenueBase Database · checked Sep 17, 2026
3	RSE	Partial evidence	Inverness Highlands, United KingdomHQ checked Sep 17, 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 17, 2026
4	Selwood LTD	Partial evidence	Eastleigh, United KingdomHQ checked Sep 17, 2026	501-1,000	477 contacts →
	Partial evidence “Selwood is your trusted partner in mission-critical water handling, storage, and treatment solutions across the UK.” Source: RevenueBase Database · checked Sep 17, 2026
5	NCH Europe	Partial evidence	Wolverhampton, United KingdomHQ checked Sep 17, 2026	10001+	453 contacts →
	Partial evidence “Industrial solutions since 1919 At NCH, we don’t just sell products-we deliver solutions that keep businesses moving.” Source: RevenueBase Database · checked Sep 17, 2026
6	Xylem Water Solutions UK & Ireland	Partial evidence	Nottingham, United KingdomHQ checked Sep 17, 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 17, 2026
7	Business Stream	Partial evidence	Edinburgh, United KingdomHQ checked Sep 17, 2026	201-500	286 contacts →
	Partial evidence “We’re one of the largest water retailers in the UK, known for our passionate approach to customer service and exceptional knowledge of the water industry.” Source: RevenueBase Database · checked Sep 17, 2026
8	Castle Water	Partial evidence	Blairgowrie, United KingdomHQ checked Sep 17, 2026	201-500	283 contacts →
	Partial evidence “We’re the UK’s largest independent business water retailer, trusted by more than UK businesses.” Source: RevenueBase Database · checked Sep 17, 2026
9	Culligan UK	Partial evidence	Dereham, United KingdomHQ checked Sep 17, 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 17, 2026
10	Biwater	Partial evidence	Surrey, United KingdomHQ checked Sep 17, 2026	501-1,000	178 contacts →
	Partial evidence “Biwater is a world leader in treated water, providing large-scale water and wastewater solutions for clients across the world.” Source: RevenueBase Database · checked Sep 17, 2026
11	Severn Trent Services	Partial evidence	Coventry, United KingdomHQ checked Sep 17, 2026	1,001-5,000	137 contacts →
	Partial 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 17, 2026
12	Enpure	Partial evidence	Birmingham, United KingdomHQ checked Sep 17, 2026	51-200	113 contacts →
	Partial 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 17, 2026
13	Alumasc Water Management Solutions	Partial evidence	Kettering, United KingdomHQ checked Sep 17, 2026	51-200	112 contacts →
	Partial evidence “AWMS, part of Alumasc Group, is the first joined-up brand in integrated water management.” Source: RevenueBase Database · checked Sep 17, 2026
14	DPS	Strong evidence	Bangor, United KingdomHQ checked Sep 17, 2026	51-200	97 contacts →
	Strong evidence “DPS is a leading supplier of water and wastewater products and services throughout the UK and Ireland.” Source: RevenueBase Database · checked Sep 17, 2026
15	Salt Separation Services Limited	Partial evidence	Rochdale, United KingdomHQ checked Sep 17, 2026	51-200	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 17, 2026
16	Feedwater Limited	Partial evidence	Moreton, United KingdomHQ checked Sep 17, 2026	51-200	79 contacts →
	Partial 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 17, 2026
17	Nijhuis Saur Industries UK And Ireland	Strong evidence	United Kingdom & Ireland, United KingdomHQ checked Sep 17, 2026	201-500	76 contacts →
	Strong evidence “At Nijhuis Saur Industries UK & Ireland our aim is to help our customers realise the value of their water and wastewater.” Source: RevenueBase Database · checked Sep 17, 2026
18	Envirogen Group	Strong evidence	Alfreton, United KingdomHQ checked Sep 17, 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 17, 2026
19	Siltbuster LTD	Partial evidence	Monmouth, United KingdomHQ checked Sep 17, 2026	51-200	75 contacts →
	Partial 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 17, 2026
20	Richard Alan	Indirect evidence	Dewsbury, United KingdomHQ checked Sep 17, 2026	51-200	74 contacts →
	Indirect 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 17, 2026
21	Jacopa Limited	Indirect evidence	West Bromwich, United KingdomHQ checked Sep 17, 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 17, 2026
22	Ashford Environmental Services Limited	Partial evidence	Ashford, United KingdomHQ checked Sep 17, 2026	51-200	61 contacts →
	Partial evidence “Welcome to Ashford Environmental Services Limited, the UK's leading building services commissioning and water treatment specialist, providing a fully integrated service to…” Source: RevenueBase Database · checked Sep 17, 2026
23	Fileder Filter Systems	Indirect evidence	Maidstone, United KingdomHQ checked Sep 17, 2026	51-200	53 contacts →
	Indirect evidence “In short, we’re 'easy to deal with'.” Source: RevenueBase Database · checked Sep 17, 2026
24	Advanced Water Technologies	Partial evidence	Warrington, United KingdomHQ checked Sep 17, 2026	51-200	52 contacts →
	Partial evidence “Welcome to Advanced Water Technologies: A dedicated water treatment & hygiene specialists focused on providing optimum solutions across a vast array of services, chemicals…” Source: RevenueBase Database · checked Sep 17, 2026
25	Water Direct	Partial evidence	Colchester, United KingdomHQ checked Sep 17, 2026	51-200	51 contacts →
	Partial evidence “As the UK’s foremost provider of alternative water services, we’re dedicated to ensuring that every business and household has access to a quality water supply – no matter what.” Source: RevenueBase Database · checked Sep 17, 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: industrial water suppliers. 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 industrial water suppliers.
Partial evidence: Its own public description names part of industrial water suppliers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial water suppliers. 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 491 industrial water suppliers based in the United Kingdom

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Industrial water suppliers based in the United Kingdom at a glance

As of Sep 17, 2026

40.8%Verified-email coverage

40.7Average contacts per company

11-50Median size (employees)

6.3%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

225

11-50

171

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 491 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 industrial water suppliers, 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 “industrial water suppliers”. 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 industrial water suppliers), 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 industrial water suppliers, 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, 8,152 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 17, 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.

Industrial water suppliers by metro

Industrial water suppliers in London31

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 industrial water suppliers, 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 industrial water suppliers are there based in the United Kingdom?

RevenueBase identified 491 industrial water suppliers 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?

Pentair, headquartered in London, tops this list with the largest team on record.

Which city has the most industrial water suppliers?

London leads with 31 headquartered companies, followed by Manchester (7) and Birmingham (6).

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 8,152 verified decision-maker contacts tracked across these 491 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 17, 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.