Company lists · Data refreshed September 2026

Top 25 Commercial water purification providers based in the United Kingdom

Name: Commercial water purification providers 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 473 companies tracked

RevenueBase identified 473 commercial water purification providers headquartered in the United Kingdom as of September 2026 and tracks 12,171 professional contacts across them, including 4,103 with verified work emails. London is the largest hub.

This list covers commercial water purification providers 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

473Companies

12,171Contacts tracked

4,103Verified emails

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The 25 largest commercial water purification providers based in the United Kingdom

Ranked by team size

Top 25 of 473 commercial water purification providers 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 commercial water purification providers: 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 19, 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 19, 2026
2	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
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	ZIP Water UK	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	179 contacts →
	Partial evidence “With unrivalled expertise in filtered boiling, chilled and sparkling water, Zip Water is known globally for being home to the world’s most advanced range of drinking water…” Source: RevenueBase Database · checked Sep 19, 2026
5	Biwater	Partial evidence	Surrey, United KingdomHQ checked Sep 19, 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 19, 2026
6	Waterlogic UK & IE	Partial evidence	Wolverhampton, United KingdomHQ checked Sep 19, 2026	501-1,000	88 contacts →
	Partial evidence “Waterlogic is an innovative designer, manufacturer, distributor and service provider of drinking water dispensers designed for environments such as offices, factories, hospitals…” Source: RevenueBase Database · checked Sep 19, 2026
7	Salt Separation Services Limited	Partial evidence	Rochdale, United KingdomHQ checked Sep 19, 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 19, 2026
8	Feedwater Limited	Partial evidence	Moreton, United KingdomHQ checked Sep 19, 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 19, 2026
9	Envirogen Group	Partial evidence	Alfreton, United KingdomHQ checked Sep 19, 2026	201-500	75 contacts →
	Partial evidence “Envirogen Group is a global leader in industrial water treatment and process filtration solutions.” Source: RevenueBase Database · checked Sep 19, 2026
10	Siltbuster LTD	Partial evidence	Monmouth, United KingdomHQ checked Sep 19, 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 19, 2026
11	Waterlogic International	Partial evidence	Maidenhead, United KingdomHQ checked Sep 19, 2026	1,001-5,000	74 contacts →
	Partial evidence “Waterlogic is an innovative designer, manufacturer, distributor and service provider of drinking water dispensers designed for environments such as offices, factories, hospitals…” Source: RevenueBase Database · checked Sep 19, 2026
12	Sayvol Environmental And Building Services Limited	Partial evidence	Kettering, United KingdomHQ checked Sep 19, 2026	51-200	57 contacts →
	Partial evidence “Independent Water Treatment & Water/Air Hygiene company with National coverage.” Source: RevenueBase Database · checked Sep 19, 2026
13	Borg & Overström	Indirect evidence	Norwich, United KingdomHQ checked Sep 19, 2026	51-200	54 contacts →
	Indirect evidence “Here at Borg & Overström, we have one mission; to empower our partners to achieve more through the creation of simple, innovative workplace refreshment.” 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	Advanced Water Technologies	Partial evidence	Warrington, United KingdomHQ checked Sep 19, 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 19, 2026
16	Water Direct	Partial evidence	Colchester, United KingdomHQ checked Sep 19, 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 19, 2026
17	Guardian Water Treatment Marlowe Environmental Services	Partial evidence	Basildon, United KingdomHQ checked Sep 19, 2026	51-200	50 contacts →
	Partial evidence “Guardian part of Marlowe Environmental Services, delivers a range of water treatment and air quality services, allowing the systems that rely on these elements to work effectively…” Source: RevenueBase Database · checked Sep 19, 2026
18	PH Water Part Of Complii	Partial evidence	Farnborough, United KingdomHQ checked Sep 19, 2026	51-200	50 contacts →
	Partial evidence “ph Water technologies are one of the leading ‘Total Environment Solutions Companies' operating within the UK.” Source: RevenueBase Database · checked Sep 19, 2026
19	Hydrotec Water Treatment Specialists	Partial evidence	High Wycombe, United KingdomHQ checked Sep 19, 2026	51-200	50 contacts →
	Partial 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
20	BIBO	Partial evidence	Combe, United KingdomHQ checked Sep 19, 2026	n/a	50 contacts →
	Partial evidence “We are all acutely aware how unsustainable bottled water is and what a negative impact it has on our environment.” Source: RevenueBase Database · checked Sep 19, 2026
21	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
22	Aqualogic WC LTD	Partial evidence	Wallasey, United KingdomHQ checked Sep 19, 2026	51-200	46 contacts →
	Partial evidence “Aqualogic is an integrated water conservation and demand management business, helping water companies reduce waste, improve performance and strengthen long-term resilience through…” Source: RevenueBase Database · checked Sep 19, 2026
23	Billi UK	Partial evidence	Wolverhampton, United KingdomHQ checked Sep 19, 2026	51-200	40 contacts →
	Partial 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
24	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
25	Water Treatment Products LTD	Partial evidence	Blaenavon, United KingdomHQ checked Sep 19, 2026	51-200	40 contacts →
	Partial 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

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: commercial water purification providers. 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 commercial water purification providers.
Partial evidence: Its own public description names part of commercial water purification providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name commercial water purification providers. 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 473 commercial water purification providers based in the United Kingdom

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Commercial water purification providers based in the United Kingdom at a glance

As of Sep 19, 2026

33.7%Verified-email coverage

25.7Average contacts per company

1-10Median size (employees)

7.0%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

236

11-50

161

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 473 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 commercial water purification providers, 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 “commercial water purification providers”. 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 commercial water purification providers), 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 commercial water purification providers, 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, 4,103 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.

Commercial water purification providers by metro

Commercial water purification providers in London33

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 commercial water purification providers, 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 commercial water purification providers are there based in the United Kingdom?

RevenueBase identified 473 commercial water purification providers 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 commercial water purification providers?

London leads with 33 headquartered companies, followed by Birmingham (7) and Warrington (7).

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 4,103 verified decision-maker contacts tracked across these 473 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.

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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.