Company lists · Data refreshed September 2026

Top 25 Water purification rental companies based in the United Kingdom

Name: Water purification rental companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 85 companies tracked

RevenueBase identified 85 water purification rental companies headquartered in the United Kingdom as of September 2026 and tracks 1,909 professional contacts across them, including 938 with verified work emails. London is the largest hub.

This list covers water purification rental companies 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 22, 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 22, 2026 86% judged on-target in blind review

85Companies

1,909Contacts tracked

938Verified emails

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The 25 largest water purification rental companies based in the United Kingdom

Ranked by team size

Top 25 of 85 water purification rental companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to water purification rental companies: 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 22, 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 22, 2026
2	Selwood LTD	Partial evidence	Eastleigh, United KingdomHQ checked Sep 22, 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 22, 2026
3	Culligan UK	Partial evidence	Dereham, United KingdomHQ checked Sep 22, 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 22, 2026
4	Siltbuster LTD	Strong evidence	Monmouth, United KingdomHQ checked Sep 22, 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 22, 2026
5	Billi UK	Partial evidence	Wolverhampton, United KingdomHQ checked Sep 22, 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 22, 2026
6	Excel Water LTD	Strong evidence	Castleford, United KingdomHQ checked Sep 22, 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 22, 2026
7	Metalwash LTD	Partial evidence	Stroud, United KingdomHQ checked Sep 22, 2026	11-50	19 contacts →
	Partial evidence “Metalwash Ltd is a company specialising in the service rental of parts cleaning equipment.” Source: RevenueBase Database · checked Sep 22, 2026
8	Ecopure Waters	Partial evidence	Buckinghamshire, United KingdomHQ checked Sep 22, 2026	11-50	15 contacts →
	Partial evidence “Your water.” Source: RevenueBase Database · checked Sep 22, 2026
9	Synthesis	Partial evidence	Alderley Edge, United KingdomHQ checked Sep 22, 2026	51-200	15 contacts →
	Partial evidence “We specialise in water treatment and disinfection, operating in almost every industry where water treatment is required.” Source: RevenueBase Database · checked Sep 22, 2026
10	Aquazero Limited	Partial evidence	Skegness, United KingdomHQ checked Sep 22, 2026	1-10	15 contacts →
	Partial evidence “Aquazero Ltd is a producer of high quality demineralised process water; ultra-pure WFI-quality water; and alcohol blends used in hospitals and surgeries for cleaning hard surfaces.” Source: RevenueBase Database · checked Sep 22, 2026
11	Bywater Services LTD	Partial evidence	Coalville, United KingdomHQ checked Sep 22, 2026	11-50	13 contacts →
	Partial evidence “Established in ByWater Services is a UK specialist in commercial water treatment, water recycling and wastewater management solutions.” Source: RevenueBase Database · checked Sep 22, 2026
12	Water-To-Go LTD	Strong evidence	Hitchin, United KingdomHQ checked Sep 22, 2026	11-50	13 contacts →
	Strong evidence “Water-to-Go is your own water purification system that fits in the palm of your hand!” Source: RevenueBase Database · checked Sep 22, 2026
13	Kelly Tanks LTD	Partial evidence	Stafford, United KingdomHQ checked Sep 22, 2026	1-10	8 contacts →
	Partial evidence “At Kelly Tanks, we specialise in delivering simple, innovative, and cost-effective water treatment solutions that protect our shared environment.” Source: RevenueBase Database · checked Sep 22, 2026
14	Siren Water Treatment	Indirect evidence	Rotherham, United KingdomHQ checked Sep 22, 2026	1-10	6 contacts →
	Indirect evidence “Get in touch - info@sirenwatertreatment.co.uk / 0800 772 3227 Every client is unique and so are we.” Source: RevenueBase Database · checked Sep 22, 2026
15	Adaptive Process Solutions	Partial evidence	Aberdeen, United KingdomHQ checked Sep 22, 2026	1-10	6 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 22, 2026
16	Genco Water	Partial evidence	King's Lynn, United KingdomHQ checked Sep 22, 2026	1-10	5 contacts →
	Partial evidence “Protect your profits, and the environment, with next gen solutions for water wastewater management.” Source: RevenueBase Database · checked Sep 22, 2026
17	The Pure Water People	Partial evidence	Bristol, United KingdomHQ checked Sep 22, 2026	51-200	5 contacts →
	Partial evidence “Here at the Pure Water People we believe everyone should enjoy the health and well-being benefits of water as pure as nature intended and pride ourselves on bringing you the…” Source: RevenueBase Database · checked Sep 22, 2026
18	Aquasoft UK	Partial evidence	Canterbury, United KingdomHQ checked Sep 22, 2026	1-10	5 contacts →
	Partial evidence “Specialists in \| Water Softeners \| Water Filtration \| Hard Water Solutions \| Commercial and Industrial.” Source: RevenueBase Database · checked Sep 22, 2026
19	Clean Water International	Strong evidence	King's Lynn, United KingdomHQ checked Sep 22, 2026	1-10	4 contacts →
	Strong evidence “Water purification and recycling specialists.” Source: RevenueBase Database · checked Sep 22, 2026
20	Xion Water Technologies	Partial evidence	Peterborough, United KingdomHQ checked Sep 22, 2026	1-10	4 contacts →
	Partial evidence “Xion Water Technologies provide a comprehensive range of water treatment solutions and services.” Source: RevenueBase Database · checked Sep 22, 2026
21	Watercare	Indirect evidence	Harlow, United KingdomHQ checked Sep 22, 2026	51-200	4 contacts →
	Indirect evidence “We are proud of who we are, what we do and why we do it.” Source: RevenueBase Database · checked Sep 22, 2026
22	Advanced Water Treatment UK LTD	Partial evidence	Downham Market, United KingdomHQ checked Sep 22, 2026	1-10	4 contacts →
	Partial evidence “ADVANCED WATER TREATMENT is a company based in East Anglia providing water treatment equipment and services to industry.” Source: RevenueBase Database · checked Sep 22, 2026
23	Purehydro Environmental Technologies LTD	Partial evidence	Westgate On Sea, United KingdomHQ checked Sep 22, 2026	1-10	3 contacts →
	Partial evidence “Providing the latest in Water Treatment Technology solutions for the construction industry” Source: RevenueBase Database · checked Sep 22, 2026
24	Water Purification Limited	Strong evidence	East Horsley, United KingdomHQ checked Sep 22, 2026	11-50	2 contacts →
	Strong evidence “Aquathin is the leading provider of Reverse Osmosis water purification systems and the patented RODI system (combining RO with Dionization) for Ultra pure and clinically safe…” Source: RevenueBase Database · checked Sep 22, 2026
25	Capital Water Treatment LTD	Strong evidence	Surrey, United KingdomHQ checked Sep 22, 2026	11-50	2 contacts →
	Strong evidence “Capital Water Treatment Ltd provides hardware, installation, contract maintenance and breakdown servicing of all types of water treatment and water purification equipment…” Source: RevenueBase Database · checked Sep 22, 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 purification rental 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 water purification rental companies.
Partial evidence: Its own public description names part of water purification rental companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water purification rental 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 85 water purification rental companies based in the United Kingdom

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Water purification rental companies based in the United Kingdom at a glance

As of Sep 22, 2026

49.1%Verified-email coverage

22.5Average contacts per company

1-10Median size (employees)

7.1%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 85 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 purification rental 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 “water purification rental 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 water purification rental 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 water purification rental 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, 938 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 22, 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 purification rental companies, 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 purification rental companies are there based in the United Kingdom?

RevenueBase identified 85 water purification rental companies 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 purification rental companies?

London leads with 6 headquartered companies, followed by Aberdeen (2) and Birmingham (2).

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 938 verified decision-maker contacts tracked across these 85 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 22, 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.