Company lists · Data refreshed September 2026

Top 25 Wastewater energy recovery companies based in the United Kingdom

Name: Wastewater energy recovery 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 19, 2026 94 companies tracked

RevenueBase identified 94 wastewater energy recovery companies headquartered in the United Kingdom as of September 2026 and tracks 1,924 professional contacts across them, including 1,123 with verified work emails. London is the largest hub.

This list covers wastewater energy recovery 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 19, 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 19, 2026 86% judged on-target in blind review

94Companies

1,924Contacts tracked

1,123Verified emails

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The 25 largest wastewater energy recovery companies based in the United Kingdom

Ranked by team size

Top 25 of 94 wastewater energy recovery companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to wastewater energy recovery 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	ENVA	Partial evidence	Enva, United KingdomHQ checked Sep 19, 2026	1,001-5,000	653 contacts →
	Partial evidence “Enva is a full-service and leading provider of recycling and resource recovery solutions, employing over 1700 people at locations across the United Kingdom and Ireland.” Source: RevenueBase Database · checked Sep 19, 2026
2	RSE	Partial evidence	Inverness Highlands, United KingdomHQ checked Sep 19, 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 19, 2026
3	Jacopa Limited	Partial evidence	West Bromwich, United KingdomHQ checked Sep 19, 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 19, 2026
4	Huber Technology UK & Ireland	Indirect evidence	Chippenham, United KingdomHQ checked Sep 19, 2026	51-200	48 contacts →
	Indirect evidence “HUBER Technology was incorporated in the UK in 1993 as a wholly owned subsidiary of Huber SE- Huber UK & Ireland Limited, the manufacturers of the ROTAMAT range of waste water…” Source: RevenueBase Database · checked Sep 19, 2026
5	Atac Solutions LTD	Partial evidence	Maidstone, United KingdomHQ checked Sep 19, 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 19, 2026
6	Bluewater BIO	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	43 contacts →
	Partial evidence “Bluewater Bio is an award winning global leader in sustainable water and wastewater treatment.” Source: RevenueBase Database · checked Sep 19, 2026
7	Wcsee Wastewater Marlowe Environmental Services	Partial evidence	Gloucester, United KingdomHQ checked Sep 19, 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 19, 2026
8	KEE	Partial evidence	Aylesbury, United KingdomHQ checked Sep 19, 2026	51-200	21 contacts →
	Partial evidence “KEE KEE is a globally recognised brand operating within in the industrial, commercial and domestic wastewater treatment industries.” Source: RevenueBase Database · checked Sep 19, 2026
9	Waterwhelm	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “Waterwhelm’s breakthrough water re-use and desalination technology operates at significantly lower pressures compared to reverse osmosis, resulting in lower capital and…” Source: RevenueBase Database · checked Sep 19, 2026
10	Te-Tech Process Solutions	Indirect evidence	Southampton, United KingdomHQ checked Sep 19, 2026	501-1,000	16 contacts →
	Indirect 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 19, 2026
11	Showersave	Partial evidence	Ballyclare, United KingdomHQ checked Sep 19, 2026	1-10	14 contacts →
	Partial evidence “Showersave is a market-leading WWHRS, offering innovative, affordable solutions to reduce energy consumption and support sustainable showering.” Source: RevenueBase Database · checked Sep 19, 2026
12	Viltra	Partial evidence	Newry, United KingdomHQ checked Sep 19, 2026	11-50	14 contacts →
	Partial 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 19, 2026
13	Environ	Indirect evidence	New Mills, United KingdomHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “Environ is a multi-disciplinary project delivery and fabrication company.” Source: RevenueBase Database · checked Sep 19, 2026
14	Aquabio LTD	Indirect evidence	Worcester, United KingdomHQ checked Sep 19, 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 19, 2026
15	Bywater Services LTD	Partial evidence	Coalville, United KingdomHQ checked Sep 19, 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 19, 2026
16	Plantwork Systems LTD	Partial evidence	Alton, United KingdomHQ checked Sep 19, 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 19, 2026
17	AIC Group Limited	Partial evidence	Armagh, United KingdomHQ checked Sep 19, 2026	11-50	12 contacts →
	Partial evidence “AIC Group designs, manufactures, installs and maintains bespoke thermal treatment and waste to energy systems for a wide range of waste streams, customers and industries across…” Source: RevenueBase Database · checked Sep 19, 2026
18	Euroby Limited	Indirect evidence	Worthing, United KingdomHQ checked Sep 19, 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 19, 2026
19	Esmil Process Systems	Indirect evidence	High Wycombe Bucks, United KingdomHQ checked Sep 19, 2026	1-10	12 contacts →
	Indirect evidence “ESMIL Process Systems is an award winning Construction company located in United Kingdom.” Source: RevenueBase Database · checked Sep 19, 2026
20	Citech Energy Recovery Solutions UK LTD	Partial evidence	Hessle, United KingdomHQ checked Sep 19, 2026	11-50	11 contacts →
	Partial evidence “CiTECH’s commitment to the oil and gas industry over the past 8 decades has resulted in the design and delivery of over 220 specialised gas turbine heat recovery systems.” Source: RevenueBase Database · checked Sep 19, 2026
21	Thermtech	Partial evidence	Manchester, United KingdomHQ checked Sep 19, 2026	11-50	11 contacts →
	Partial evidence “We design, manufacture and install bespoke industrial waste heat recovery systems with unrivaled technical excellence and through a highly skilled workforce.” Source: RevenueBase Database · checked Sep 19, 2026
22	Recoup Wwhrs	Partial evidence	Norwich, United KingdomHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial evidence “Hot water is one of the largest energy demands in UK homes, yet around up to 90% of the energy used to heat shower water goes straight down the drain.” Source: RevenueBase Database · checked Sep 19, 2026
23	Evergreen Water Solutions LTD	Partial evidence	Hinckley, United KingdomHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial 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 19, 2026
24	Water Tecnik LTD	Partial evidence	Newry, United KingdomHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial evidence “Water Tecnik specialises in delivering practical, compliant, and cost-effective industrial wastewater and effluent treatment solutions.” Source: RevenueBase Database · checked Sep 19, 2026
25	Alps Ecoscience UK LTD	Indirect evidence	Wokingham, United KingdomHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “Alps Ecoscience is a biological engineering consultancy.” Source: RevenueBase Database · checked Sep 19, 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: wastewater energy recovery 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 wastewater energy recovery companies.
Partial evidence: Its own public description names part of wastewater energy recovery companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name wastewater energy recovery 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 94 wastewater energy recovery companies based in the United Kingdom

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Wastewater energy recovery companies based in the United Kingdom at a glance

As of Sep 19, 2026

58.4%Verified-email coverage

20.5Average contacts per company

11-50Median size (employees)

7.4%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

1,001-5,000

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 94 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 wastewater energy recovery 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 “wastewater energy recovery 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 wastewater energy recovery 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 wastewater energy recovery 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, 1,123 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 19, 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 wastewater energy recovery 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 wastewater energy recovery companies are there based in the United Kingdom?

RevenueBase identified 94 wastewater energy recovery 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?

ENVA, headquartered in United Kingdom, tops this list with the largest team on record.

Which city has the most wastewater energy recovery companies?

London leads with 7 headquartered companies, followed by Newry (4) and Coventry (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 1,123 verified decision-maker contacts tracked across these 94 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 19, 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.