Company lists · Data refreshed September 2026

Top 25 Portable water treatment solutions providers based in the United Kingdom

Name: Portable water treatment solutions 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 20, 2026 184 companies tracked

RevenueBase identified 184 portable water treatment solutions providers headquartered in the United Kingdom as of September 2026 and tracks 3,474 professional contacts across them, including 1,380 with verified work emails. London is the largest hub.

This list covers portable water treatment solutions 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 20, 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 20, 2026 86% judged on-target in blind review

184Companies

3,474Contacts tracked

1,380Verified emails

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The 25 largest portable water treatment solutions providers based in the United Kingdom

Ranked by team size

Top 25 of 184 portable water treatment solutions providers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to portable water treatment solutions 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	RSE	Strong evidence	Inverness Highlands, United KingdomHQ checked Sep 20, 2026	501-1,000	498 contacts →
	Strong 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 20, 2026
2	Selwood LTD	Strong evidence	Eastleigh, United KingdomHQ checked Sep 20, 2026	501-1,000	477 contacts →
	Strong evidence “Selwood is your trusted partner in mission-critical water handling, storage, and treatment solutions across the UK.” Source: RevenueBase Database · checked Sep 20, 2026
3	Culligan UK	Strong evidence	Dereham, United KingdomHQ checked Sep 20, 2026	501-1,000	231 contacts →
	Strong evidence “Culligan UK delivers innovative, high-quality water solutions to homes and businesses across the United Kingdom.” Source: RevenueBase Database · checked Sep 20, 2026
4	Biwater	Strong evidence	Surrey, United KingdomHQ checked Sep 20, 2026	501-1,000	178 contacts →
	Strong 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 20, 2026
5	Salt Separation Services Limited	Strong evidence	Rochdale, United KingdomHQ checked Sep 20, 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 20, 2026
6	Nijhuis Saur Industries UK And Ireland	Partial evidence	United Kingdom & Ireland, United KingdomHQ checked Sep 20, 2026	201-500	76 contacts →
	Partial 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 20, 2026
7	Envirogen Group	Strong evidence	Alfreton, United KingdomHQ checked Sep 20, 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 20, 2026
8	Siltbuster LTD	Strong evidence	Monmouth, United KingdomHQ checked Sep 20, 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 20, 2026
9	Hydrotec Water Treatment Specialists	Strong evidence	High Wycombe, United KingdomHQ checked Sep 20, 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 20, 2026
10	Bluewater BIO	Strong evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	43 contacts →
	Strong evidence “Bluewater Bio is an award winning global leader in sustainable water and wastewater treatment.” Source: RevenueBase Database · checked Sep 20, 2026
11	Billi UK	Partial evidence	Wolverhampton, United KingdomHQ checked Sep 20, 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 20, 2026
12	Hydro Industries Limited	Partial evidence	London, United KingdomHQ checked Sep 20, 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 20, 2026
13	Marsh Industries LTD	Strong evidence	Northamptonshire, United KingdomHQ checked Sep 20, 2026	51-200	33 contacts →
	Strong evidence “Marsh Industries delivers world-class water/wastewater treatment products and solutions to the domestic, commercial, agricultural and leisure sectors from its UK manufacturing…” Source: RevenueBase Database · checked Sep 20, 2026
14	Arvia Technology	Strong evidence	Runcorn, United KingdomHQ checked Sep 20, 2026	11-50	32 contacts →
	Strong evidence “Tertiary water treatment specialist.” Source: RevenueBase Database · checked Sep 20, 2026
15	Filpumps LTD	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 20, 2026	11-50	28 contacts →
	Indirect evidence “Filpumps was established in 1992 to fulfil a number of external factors.” Source: RevenueBase Database · checked Sep 20, 2026
16	Lubron UK	Strong evidence	Colchester, United KingdomHQ checked Sep 20, 2026	51-200	26 contacts →
	Strong 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 20, 2026
17	Chem-Aqua Europe	Strong evidence	Wolverhampton, United KingdomHQ checked Sep 20, 2026	n/a	25 contacts →
	Strong evidence “Water treatment is an important part of preventative maintenance programmes for boiler, cooling and process water systems.” Source: RevenueBase Database · checked Sep 20, 2026
18	TWC Total Water Care	Strong evidence	Bicester, United KingdomHQ checked Sep 20, 2026	11-50	22 contacts →
	Strong 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 20, 2026
19	Excel Water LTD	Strong evidence	Castleford, United KingdomHQ checked Sep 20, 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 20, 2026
20	Te-Tech Process Solutions	Strong evidence	Southampton, United KingdomHQ checked Sep 20, 2026	501-1,000	16 contacts →
	Strong evidence “Te-Tech Process Solutions Ltd has been established to provide a dedicated service to existing and new clients in the municipal water, industrial and commercial sectors.” Source: RevenueBase Database · checked Sep 20, 2026
21	Pureh2o LTD	Indirect evidence	Woking, United KingdomHQ checked Sep 20, 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 20, 2026
22	Ecopure Waters	Partial evidence	Buckinghamshire, United KingdomHQ checked Sep 20, 2026	11-50	15 contacts →
	Partial evidence “Your water.” Source: RevenueBase Database · checked Sep 20, 2026
23	Synthesis	Strong evidence	Alderley Edge, United KingdomHQ checked Sep 20, 2026	51-200	15 contacts →
	Strong evidence “We specialise in water treatment and disinfection, operating in almost every industry where water treatment is required.” Source: RevenueBase Database · checked Sep 20, 2026
24	Plantwork Systems LTD	Strong evidence	Alton, United KingdomHQ checked Sep 20, 2026	11-50	13 contacts →
	Strong 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 20, 2026
25	Water-To-Go LTD	Partial evidence	Hitchin, United KingdomHQ checked Sep 20, 2026	11-50	13 contacts →
	Partial evidence “Water-to-Go is your own water purification system that fits in the palm of your hand!” Source: RevenueBase Database · checked Sep 20, 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: portable water treatment solutions 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 portable water treatment solutions providers.
Partial evidence: Its own public description names part of portable water treatment solutions providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name portable water treatment solutions 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 184 portable water treatment solutions providers based in the United Kingdom

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Portable water treatment solutions providers based in the United Kingdom at a glance

As of Sep 20, 2026

39.7%Verified-email coverage

18.9Average contacts per company

11-50Median size (employees)

7.1%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 184 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 portable water treatment solutions 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 “portable water treatment solutions 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 portable water treatment solutions 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 portable water treatment solutions 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, 1,380 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 20, 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 portable water treatment solutions 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 portable water treatment solutions providers are there based in the United Kingdom?

RevenueBase identified 184 portable water treatment solutions 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?

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

Which city has the most portable water treatment solutions providers?

London leads with 13 headquartered companies, followed by Bristol (4) 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 1,380 verified decision-maker contacts tracked across these 184 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 20, 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.