Company lists · Data refreshed September 2026

Top 25 Industrial wastewater treatment based in the United Kingdom

Name: Industrial wastewater treatment based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 147 companies tracked

RevenueBase identified 147 industrial wastewater treatment headquartered in the United Kingdom as of September 2026 and tracks 2,619 professional contacts across them, including 1,070 with verified work emails. London is the largest hub.

This list covers industrial wastewater treatment 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 17, 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 17, 2026 86% judged on-target in blind review

147Companies

2,619Contacts tracked

1,070Verified emails

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The 25 largest industrial wastewater treatment based in the United Kingdom

Ranked by team size

Top 25 of 147 industrial wastewater treatment based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial wastewater treatment: 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 17, 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 17, 2026
2	Biwater	Partial evidence	Surrey, United KingdomHQ checked Sep 17, 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 17, 2026
3	Severn Trent Services	Partial evidence	Coventry, United KingdomHQ checked Sep 17, 2026	1,001-5,000	137 contacts →
	Partial evidence “Severn Trent Services offer a range of services to municipal and industrial clients, including the Ministry of Defence and the Coal Authority, for design, build and operation of…” Source: RevenueBase Database · checked Sep 17, 2026
4	Envirogen Group	Strong evidence	Alfreton, United KingdomHQ checked Sep 17, 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 17, 2026
5	Siltbuster LTD	Partial evidence	Monmouth, United KingdomHQ checked Sep 17, 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 17, 2026
6	Richard Alan	Indirect evidence	Dewsbury, United KingdomHQ checked Sep 17, 2026	51-200	74 contacts →
	Indirect evidence “Established in 1970, the West Yorkshire-based Richard Alan Group is a portfolio of businesses providing high-quality Engineering Design, Manufacture, Installation and Servicing to…” Source: RevenueBase Database · checked Sep 17, 2026
7	Jacopa Limited	Partial evidence	West Bromwich, United KingdomHQ checked Sep 17, 2026	51-200	73 contacts →
	Partial evidence “Many of the best known, most respected and reliable brand names in the wastewater industry are part of Jacopa's heritage.” Source: RevenueBase Database · checked Sep 17, 2026
8	Atac Solutions LTD	Partial evidence	Maidstone, United KingdomHQ checked Sep 17, 2026	11-50	44 contacts →
	Partial evidence “ATAC Solutions Ltd is a leading UK environmental services company specialising in wastewater services and wastewater equipment on a capital purchase or hire basis.” Source: RevenueBase Database · checked Sep 17, 2026
9	Bluewater BIO	Strong evidence	London, United KingdomHQ checked Sep 17, 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 17, 2026
10	Hydro Industries Limited	Partial evidence	London, United KingdomHQ checked Sep 17, 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 17, 2026
11	Telcoss LTD	Indirect evidence	Middlesbrough, United KingdomHQ checked Sep 17, 2026	51-200	36 contacts →
	Indirect evidence “Telcoss Limited is a family run business established in 2019.” Source: RevenueBase Database · checked Sep 17, 2026
12	Elentec	Partial evidence	Bethesda, United KingdomHQ checked Sep 17, 2026	11-50	36 contacts →
	Partial evidence “Elentec develops and supplies electrochemical water treatment systems - together with appropriate separation technology.” Source: RevenueBase Database · checked Sep 17, 2026
13	Marsh Industries LTD	Strong evidence	Northamptonshire, United KingdomHQ checked Sep 17, 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 17, 2026
14	Wcsee Wastewater Marlowe Environmental Services	Partial evidence	Gloucester, United KingdomHQ checked Sep 17, 2026	11-50	32 contacts →
	Partial evidence “At WCSEE we collaborate closely with our clients to design and deliver reliable, robust, and future-proofed wastewater systems tailored to site specific requirements.” Source: RevenueBase Database · checked Sep 17, 2026
15	Arvia Technology	Partial evidence	Runcorn, United KingdomHQ checked Sep 17, 2026	11-50	32 contacts →
	Partial evidence “Tertiary water treatment specialist.” Source: RevenueBase Database · checked Sep 17, 2026
16	Corgin LTD	Indirect evidence	Stafford, United KingdomHQ checked Sep 17, 2026	11-50	25 contacts →
	Indirect evidence “Corgin gives peace of mind to those who care about clean water and clean air.” Source: RevenueBase Database · checked Sep 17, 2026
17	Acwa Services Limited	Strong evidence	Skipton, United KingdomHQ checked Sep 17, 2026	11-50	22 contacts →
	Strong evidence “ACWA Services Limited is a Municipal and Industrial Water and Wastewater Treatment company located in Skipton, United Kingdom.” Source: RevenueBase Database · checked Sep 17, 2026
18	KEE	Strong evidence	Aylesbury, United KingdomHQ checked Sep 17, 2026	51-200	21 contacts →
	Strong evidence “KEE KEE is a globally recognised brand operating within in the industrial, commercial and domestic wastewater treatment industries.” Source: RevenueBase Database · checked Sep 17, 2026
19	Excel Water LTD	Partial evidence	Castleford, United KingdomHQ checked Sep 17, 2026	11-50	21 contacts →
	Partial 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 17, 2026
20	Te-Tech Process Solutions	Partial evidence	Southampton, United KingdomHQ checked Sep 17, 2026	501-1,000	16 contacts →
	Partial 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 17, 2026
21	Viltra	Strong evidence	Newry, United KingdomHQ checked Sep 17, 2026	11-50	14 contacts →
	Strong evidence “Viltra specialises in designing, manufacturing and installing wastewater treatment solutions for a wide range of sectors throughout the UK and Ireland, including domestic…” Source: RevenueBase Database · checked Sep 17, 2026
22	Aquabio LTD	Indirect evidence	Worcester, United KingdomHQ checked Sep 17, 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 17, 2026
23	Bywater Services LTD	Strong evidence	Coalville, United KingdomHQ checked Sep 17, 2026	11-50	13 contacts →
	Strong evidence “Established in ByWater Services is a UK specialist in commercial water treatment, water recycling and wastewater management solutions.” Source: RevenueBase Database · checked Sep 17, 2026
24	Plantwork Systems LTD	Strong evidence	Alton, United KingdomHQ checked Sep 17, 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 17, 2026
25	Euroby Limited	Indirect evidence	Worthing, United KingdomHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence “Euroby Limited is one of the UK’s leading environmental waste processing organisations.” Source: RevenueBase Database · checked Sep 17, 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: industrial wastewater treatment. 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 industrial wastewater treatment.
Partial evidence: Its own public description names part of industrial wastewater treatment, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial wastewater treatment. 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 147 industrial wastewater treatment based in the United Kingdom

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Industrial wastewater treatment based in the United Kingdom at a glance

As of Sep 17, 2026

40.9%Verified-email coverage

17.8Average contacts per company

11-50Median size (employees)

6.1%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 147 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 industrial wastewater treatment, 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 “industrial wastewater treatment”. 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 industrial wastewater treatment), 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 industrial wastewater treatment, 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, 1,070 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 17, 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 industrial wastewater treatment, 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 industrial wastewater treatment are there based in the United Kingdom?

RevenueBase identified 147 industrial wastewater treatment 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 industrial wastewater treatment?

London leads with 9 headquartered companies, followed by Coventry (5) and Newry (4).

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 1,070 verified decision-maker contacts tracked across these 147 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 17, 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.