Company lists · Data refreshed September 2026

Top 25 Agricultural water treatment system manufacturers based in the United Kingdom

Name: Agricultural water treatment system 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 97 companies tracked

RevenueBase identified 97 agricultural water treatment system manufacturers headquartered in the United Kingdom as of September 2026 and tracks 1,962 professional contacts across them, including 760 with verified work emails. London is the largest hub.

This list covers agricultural water treatment system 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

97Companies

1,962Contacts tracked

760Verified emails

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The 25 largest agricultural water treatment system manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 97 agricultural water treatment system 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 agricultural water treatment system 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	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
2	Alumasc Water Management Solutions	Partial evidence	Kettering, United KingdomHQ checked Sep 30, 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 30, 2026
3	Envirogen Group	Strong evidence	Alfreton, United KingdomHQ checked Sep 30, 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 30, 2026
4	Siltbuster LTD	Strong evidence	Monmouth, United KingdomHQ checked Sep 30, 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 30, 2026
5	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
6	Graf UK LTD	Partial evidence	Banbury, United KingdomHQ checked Sep 30, 2026	51-200	43 contacts →
	Partial evidence “Graf UK Ltd was formed following the acquisition of SCP Water Management Ltd by Graf GmbH, the European market leaders in rainwater harvesting.” Source: RevenueBase Database · checked Sep 30, 2026
7	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
8	Elentec	Strong evidence	Bethesda, United KingdomHQ checked Sep 30, 2026	11-50	36 contacts →
	Strong evidence “Elentec develops and supplies electrochemical water treatment systems - together with appropriate separation technology.” Source: RevenueBase Database · checked Sep 30, 2026
9	Marsh Industries LTD	Strong evidence	Northamptonshire, United KingdomHQ checked Sep 30, 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 30, 2026
10	QED Environmental Systems Emea & Apac	Strong evidence	Coventry, United KingdomHQ checked Sep 30, 2026	51-200	28 contacts →
	Strong evidence “QED Environmental Systems design, manufacture and support environmental technology solutions for groundwater, soil and gas management applications into industrial, environmental…” Source: RevenueBase Database · checked Sep 30, 2026
11	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
12	Aquabio LTD	Indirect evidence	Worcester, United KingdomHQ checked Sep 30, 2026	11-50	14 contacts →
	Indirect evidence “Aquabio is a pioneering company born with a passion for innovation combined with a strong ethos for environmental sustainability.” Source: RevenueBase Database · checked Sep 30, 2026
13	Plantwork Systems LTD	Strong evidence	Alton, United KingdomHQ checked Sep 30, 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 30, 2026
14	Esmil Process Systems	Partial evidence	High Wycombe Bucks, United KingdomHQ checked Sep 30, 2026	1-10	12 contacts →
	Partial evidence “ESMIL Process Systems is an award winning Construction company located in United Kingdom.” Source: RevenueBase Database · checked Sep 30, 2026
15	Adept Pure Water LTD	Strong evidence	Wellingborough, United KingdomHQ checked Sep 30, 2026	11-50	11 contacts →
	Strong evidence “ADEPT Pure Water Limited are specialists in the design, manufacture, commission, installation and Service of Water Purification and Treatment Plant and equipment.” Source: RevenueBase Database · checked Sep 30, 2026
16	Evergreen Water Solutions LTD	Strong evidence	Hinckley, United KingdomHQ checked Sep 30, 2026	11-50	10 contacts →
	Strong evidence “Evergreen Water Solutions works closely with a number of international engineering companies whose expertise is in scalable wastewater treatment systems and containerised…” Source: RevenueBase Database · checked Sep 30, 2026
17	Water Tecnik LTD	Strong evidence	Newry, United KingdomHQ checked Sep 30, 2026	11-50	10 contacts →
	Strong evidence “Water Tecnik specialises in delivering practical, compliant, and cost-effective industrial wastewater and effluent treatment solutions.” Source: RevenueBase Database · checked Sep 30, 2026
18	Puretec Separations	Strong evidence	Ledbury, United KingdomHQ checked Sep 30, 2026	11-50	9 contacts →
	Strong evidence “PureTec Separations is a leader in technologies and customer experience within the water treatment and product processing industries.” Source: RevenueBase Database · checked Sep 30, 2026
19	Emulous Water	Strong evidence	Wells, United KingdomHQ checked Sep 30, 2026	11-50	8 contacts →
	Strong evidence “We are expert design & build engineers in ultrafiltration, nanofiltration, UV-C and AOP water treatment, purification, and sanitisation systems integration, specialist maintenance…” Source: RevenueBase Database · checked Sep 30, 2026
20	Kelly Tanks LTD	Strong evidence	Stafford, United KingdomHQ checked Sep 30, 2026	1-10	8 contacts →
	Strong 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 30, 2026
21	Tech Environment UK LTD	Indirect evidence	Guildford, United KingdomHQ checked Sep 30, 2026	11-50	7 contacts →
	Indirect evidence “Tech Environment UK Co.” Source: RevenueBase Database · checked Sep 30, 2026
22	Wychwood Water Systems LTD	Indirect evidence	Witney, United KingdomHQ checked Sep 30, 2026	11-50	6 contacts →
	Indirect evidence “We began trading in 1996.” Source: RevenueBase Database · checked Sep 30, 2026
23	Hydra Clear Process Water	Strong evidence	Warrington, United KingdomHQ checked Sep 30, 2026	1-10	5 contacts →
	Strong evidence “Hydra-Clear is an innovative engineering group focused around building bespoke Water Treatment Solutions for the UK’s leading brands.” Source: RevenueBase Database · checked Sep 30, 2026
24	Genco Water	Partial evidence	King's Lynn, United KingdomHQ checked Sep 30, 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 30, 2026
25	The Pure Water People	Partial evidence	Bristol, United KingdomHQ checked Sep 30, 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 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: agricultural water treatment system 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 agricultural water treatment system manufacturers.
Partial evidence: Its own public description names part of agricultural water treatment system manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name agricultural water treatment system 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 97 agricultural water treatment system manufacturers based in the United Kingdom

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Agricultural water treatment system manufacturers based in the United Kingdom at a glance

As of Sep 30, 2026

38.7%Verified-email coverage

20.2Average contacts per company

11-50Median size (employees)

5.2%Largest-city concentration · London

Sep 30, 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 97 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 agricultural water treatment system 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 “agricultural water treatment system 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 agricultural water treatment system 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 agricultural water treatment system 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, 760 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 agricultural water treatment system 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 agricultural water treatment system manufacturers are there based in the United Kingdom?

RevenueBase identified 97 agricultural water treatment system 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?

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

Which city has the most agricultural water treatment system manufacturers?

London leads with 5 headquartered companies, followed by Coventry (3) and Bristol (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 760 verified decision-maker contacts tracked across these 97 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.

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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.