Company lists · Data refreshed September 2026

Top 25 Water purifier manufacturers based in the United Kingdom

Name: Water purifier 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 30, 2026 192 companies tracked

RevenueBase identified 192 water purifier manufacturers headquartered in the United Kingdom as of September 2026 and tracks 9,805 professional contacts across them, including 3,296 with verified work emails. London is the largest hub.

This list covers water purifier 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 30, 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 30, 2026 86% judged on-target in blind review

192Companies

9,805Contacts tracked

3,296Verified emails

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

The 25 largest water purifier manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 192 water purifier manufacturers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to water purifier 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	Pentair	Partial evidence	London, United KingdomHQ checked Sep 30, 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 30, 2026
2	RSE	Partial evidence	Inverness Highlands, United KingdomHQ checked Sep 30, 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 30, 2026
3	Culligan UK	Partial evidence	Dereham, United KingdomHQ checked Sep 30, 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 30, 2026
4	ZIP Water UK	Partial evidence	London, United KingdomHQ checked Sep 30, 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 30, 2026
5	Waterlogic UK & IE	Strong evidence	Wolverhampton, United KingdomHQ checked Sep 30, 2026	501-1,000	88 contacts →
	Strong 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 30, 2026
6	Salt Separation Services Limited	Strong evidence	Rochdale, United KingdomHQ checked Sep 30, 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 30, 2026
7	Envirogen Group	Partial evidence	Alfreton, United KingdomHQ checked Sep 30, 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 30, 2026
8	Siltbuster LTD	Partial evidence	Monmouth, United KingdomHQ checked Sep 30, 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 30, 2026
9	Waterlogic International	Strong evidence	Maidenhead, United KingdomHQ checked Sep 30, 2026	1,001-5,000	74 contacts →
	Strong 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 30, 2026
10	Borg & Overström	Indirect evidence	Norwich, United KingdomHQ checked Sep 30, 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 30, 2026
11	Fileder Filter Systems	Indirect evidence	Maidstone, United KingdomHQ checked Sep 30, 2026	51-200	53 contacts →
	Indirect evidence “In short, we’re 'easy to deal with'.” Source: RevenueBase Database · checked Sep 30, 2026
12	Guardian Water Treatment Marlowe Environmental Services	Partial evidence	Basildon, United KingdomHQ checked Sep 30, 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 30, 2026
13	Hydrotec Water Treatment Specialists	Strong evidence	High Wycombe, United KingdomHQ checked Sep 30, 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 30, 2026
14	BIBO	Partial evidence	Combe, United KingdomHQ checked Sep 30, 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 30, 2026
15	Billi UK	Strong evidence	Wolverhampton, United KingdomHQ checked Sep 30, 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 30, 2026
16	Hydro Industries Limited	Partial evidence	London, United KingdomHQ checked Sep 30, 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 30, 2026
17	Aqua Libra	Strong evidence	London, United KingdomHQ checked Sep 30, 2026	51-200	30 contacts →
	Strong evidence “We design, manufacture, and supply a range of industry leading, energy efficient water dispensers, playing a key role in striving for net zero and helping on others’…” Source: RevenueBase Database · checked Sep 30, 2026
18	Filpumps LTD	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 30, 2026	11-50	28 contacts →
	Indirect evidence “Filpumps was established in 1992 to fulfil a number of external factors.” Source: RevenueBase Database · checked Sep 30, 2026
19	Lubron UK	Partial evidence	Colchester, United KingdomHQ checked Sep 30, 2026	51-200	26 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 30, 2026
20	TWC Total Water Care	Partial evidence	Bicester, United KingdomHQ checked Sep 30, 2026	11-50	22 contacts →
	Partial evidence “Our core team have numerous years experience in the field of commercial water treatment and a proven track record of delivering effective, compliant water treatments packages.” Source: RevenueBase Database · checked Sep 30, 2026
21	Excel Water LTD	Strong evidence	Castleford, United KingdomHQ checked Sep 30, 2026	11-50	21 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 30, 2026
22	Monarch Water	Strong evidence	Diss, United KingdomHQ checked Sep 30, 2026	11-50	20 contacts →
	Strong evidence “Monarch is a leading UK manufacturer and distributor of high quality, high performance water softeners, water conditioners, scale inhibitors, water filters and purifiers, taps and…” Source: RevenueBase Database · checked Sep 30, 2026
23	Pureh2o LTD	Indirect evidence	Woking, United KingdomHQ checked Sep 30, 2026	11-50	16 contacts →
	Indirect evidence “At PureH2O we put environmental sustainability at the heart of everything we do.” Source: RevenueBase Database · checked Sep 30, 2026
24	Ecopure Waters	Partial evidence	Buckinghamshire, United KingdomHQ checked Sep 30, 2026	11-50	15 contacts →
	Partial evidence “Your water.” Source: RevenueBase Database · checked Sep 30, 2026
25	Plantwork Systems LTD	Partial evidence	Alton, United KingdomHQ checked Sep 30, 2026	11-50	13 contacts →
	Partial evidence “Plantwork Systems Ltd (PWS) provides water and wastewater treatment solutions with a strong focus on sustainability, innovation and cost efficiency.” Source: RevenueBase Database · checked Sep 30, 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 purifier 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 purifier manufacturers.
Partial evidence: Its own public description names part of water purifier manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water purifier 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 192 water purifier 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 3,296 reachable decision-makers.

Free signup · no credit card

View the full list →

Water purifier manufacturers based in the United Kingdom at a glance

As of Sep 30, 2026

33.6%Verified-email coverage

51.1Average contacts per company

11-50Median size (employees)

9.9%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 192 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 purifier 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 purifier 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 purifier 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 purifier 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, 3,296 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 30, 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 purifier 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 purifier manufacturers are there based in the United Kingdom?

RevenueBase identified 192 water purifier 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?

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

Which city has the most water purifier manufacturers?

London leads with 19 headquartered companies, followed by Glasgow (3) and High Wycombe (3).

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 3,296 verified decision-maker contacts tracked across these 192 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 30, 2026.

Ready to reach these companies? Verified emails and direct dials for all 192 water purifier manufacturers based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Water purifier manufacturers by geography

Browse the directory

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.