Company lists · Data refreshed September 2026

Top 25 Oil and gas wastewater treatment companies based in the United Kingdom

Name: Oil and gas wastewater treatment 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 17, 2026 83 companies tracked

RevenueBase identified 83 oil and gas wastewater treatment companies headquartered in the United Kingdom as of September 2026 and tracks 1,551 professional contacts across them, including 648 with verified work emails. Aberdeen is the largest hub.

This list covers oil and gas wastewater treatment 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 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

83Companies

1,551Contacts tracked

648Verified emails

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The 25 largest oil and gas wastewater treatment companies based in the United Kingdom

Ranked by team size

Top 25 of 83 oil and gas wastewater treatment companies 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 oil and gas wastewater treatment 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	TWMA	Indirect evidence	Dyce, United KingdomHQ checked Sep 17, 2026	501-1,000	456 contacts →
	Indirect evidence “TWMA is the world’s drilling waste specialist; pioneering the best solutions & technology to turn waste into value.” Source: RevenueBase Database · checked Sep 17, 2026
2	Severn Trent Services	Indirect evidence	Coventry, United KingdomHQ checked Sep 17, 2026	1,001-5,000	137 contacts →
	Indirect 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
3	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
4	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
5	OSSO	Partial evidence	Dyce, United KingdomHQ checked Sep 17, 2026	11-50	47 contacts →
	Partial evidence “OUR EQUIPMENT SUPPORTS YOUR SUSTAINABLE DEVELOPMENT OSSO is a fully integrated service and maintenance company providing specialist fluid separation, water treatment & heat…” Source: RevenueBase Database · checked Sep 17, 2026
6	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
7	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
8	Vikoma International, OIL Recovery And Environment Protection	Partial evidence	East Cowes, United KingdomHQ checked Sep 17, 2026	51-200	35 contacts →
	Partial evidence “Vikoma has been manufacturing reliable and innovative oil recovery and environment protection equipment for over 50 years.” Source: RevenueBase Database · checked Sep 17, 2026
9	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
10	OIL Recoveries	Partial evidence	Southport, United KingdomHQ checked Sep 17, 2026	11-50	25 contacts →
	Partial evidence “With over 75 years of industry experience, Oil Recoveries is a market-leading specialist in oil recovery and waste management solutions.” Source: RevenueBase Database · checked Sep 17, 2026
11	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
12	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
13	Ctech Europe LTD	Strong evidence	Neston, United KingdomHQ checked Sep 17, 2026	11-50	13 contacts →
	Strong evidence “Manufacturers of PolyClay® Wastewater Treatment Chemistry and Specialists in Industrial Wastewater Treatment and Sludge Dewatering - production and supply of industrial wastewater…” Source: RevenueBase Database · checked Sep 17, 2026
14	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
15	Esmil Process Systems	Indirect evidence	High Wycombe Bucks, United KingdomHQ checked Sep 17, 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 17, 2026
16	Enhydra LTD	Indirect evidence	Cromhall, United KingdomHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence “Enhydra Ltd is a process engineering company based in the United Kingdom, who supplies equipment and services around the world from Alaska to Australia.” Source: RevenueBase Database · checked Sep 17, 2026
17	Evergreen Water Solutions LTD	Strong evidence	Hinckley, United KingdomHQ checked Sep 17, 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 17, 2026
18	Water Tecnik LTD	Strong evidence	Newry, United KingdomHQ checked Sep 17, 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 17, 2026
19	Puretech Environmental LTD	Partial evidence	Cranleigh, United KingdomHQ checked Sep 17, 2026	11-50	8 contacts →
	Partial evidence “Puretech Environmental Waste Water Treatment Company are specialists in all Industrial Effluent Treatment Systems.” Source: RevenueBase Database · checked Sep 17, 2026
20	Apsl Systems Limited	Strong evidence	Rugby, United KingdomHQ checked Sep 17, 2026	1-10	7 contacts →
	Strong evidence “APSL Systems Limited (APSL) is a global supplier of Oil, Gas, Produced Water and Sea Water process equipment solutions to the Oil, Gas, Refining and Petrochemicals Industries.” Source: RevenueBase Database · checked Sep 17, 2026
21	Adaptive Process Solutions	Partial evidence	Aberdeen, United KingdomHQ checked Sep 17, 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 17, 2026
22	Atana Limited	Indirect evidence	Lutterworth, United KingdomHQ checked Sep 17, 2026	1-10	6 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
23	Howe Baker	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	6 contacts →
	Strong evidence “The specialists of Howe-Baker have great experience in all aspects of natural gas processing, crude oil refinery and water treatment plants.” Source: RevenueBase Database · checked Sep 17, 2026
24	MSE Systems LTD	Strong evidence	Chesterfield, United KingdomHQ checked Sep 17, 2026	11-50	5 contacts →
	Strong evidence “MSE Systems are specialists in the design, build and commissioning of industrial wastewater treatment plants, offering a full end-of-pipe solution for the recycling and re-use of…” Source: RevenueBase Database · checked Sep 17, 2026
25	United Global Water	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	5 contacts →
	Strong evidence “United Global Water Holdings Limited develops and sponsors distinct technologies and services for water purification and wastewater treatment as well as for resource recovery and…” 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: oil and gas wastewater treatment 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 oil and gas wastewater treatment companies.
Partial evidence: Its own public description names part of oil and gas wastewater treatment companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil and gas wastewater treatment 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 83 oil and gas wastewater treatment companies based in the United Kingdom

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Oil and gas wastewater treatment companies based in the United Kingdom at a glance

As of Sep 17, 2026

41.8%Verified-email coverage

18.7Average contacts per company

11-50Median size (employees)

7.2%Largest-city concentration · Aberdeen

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 83 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 oil and gas wastewater treatment 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 “oil and gas wastewater treatment 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 oil and gas wastewater treatment 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 oil and gas wastewater treatment 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, 648 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 oil and gas wastewater treatment 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 oil and gas wastewater treatment companies are there based in the United Kingdom?

RevenueBase identified 83 oil and gas wastewater treatment 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?

TWMA, headquartered in Aberdeen, tops this list with the largest team on record.

Which city has the most oil and gas wastewater treatment companies?

Aberdeen leads with 6 headquartered companies, followed by London (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 648 verified decision-maker contacts tracked across these 83 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.