Company lists · Data refreshed September 2026

Top 25 Groundwater treatment companies based in the United Kingdom

Name: Groundwater 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 20, 2026 80 companies tracked

RevenueBase identified 80 groundwater treatment companies headquartered in the United Kingdom as of September 2026 and tracks 806 professional contacts across them, including 343 with verified work emails. Guildford is the largest hub.

This list covers groundwater 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 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

80Companies

806Contacts tracked

343Verified emails

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The 25 largest groundwater treatment companies based in the United Kingdom

Ranked by team size

Top 25 of 80 groundwater treatment companies 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 groundwater 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	Severn Trent Services	Indirect evidence	Coventry, United KingdomHQ checked Sep 20, 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 20, 2026
2	Siltbuster LTD	Partial evidence	Monmouth, United KingdomHQ checked Sep 20, 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 20, 2026
3	Mcauliffe Group	Partial evidence	Wolverhampton, United KingdomHQ checked Sep 20, 2026	51-200	66 contacts →
	Partial evidence “Established over 50 years ago, McAuliffe is a Specialist Remediation Contractor providing Soil & Groundwater Remediation, Materials Management, Ground Improvement & Demolition…” Source: RevenueBase Database · checked Sep 20, 2026
4	WJ UK	Partial evidence	Kings Langley, United KingdomHQ checked Sep 20, 2026	51-200	65 contacts →
	Partial evidence “Part of the WJ Group, WJ UK offer a complete groundwater control and management service, which encompasses design, installation and maintenance programmes to businesses throughout…” Source: RevenueBase Database · checked Sep 20, 2026
5	Elentec	Partial evidence	Bethesda, United KingdomHQ checked Sep 20, 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 20, 2026
6	Arvia Technology	Partial evidence	Runcorn, United KingdomHQ checked Sep 20, 2026	11-50	32 contacts →
	Partial evidence “Tertiary water treatment specialist.” Source: RevenueBase Database · checked Sep 20, 2026
7	QED Environmental Systems Emea & Apac	Partial evidence	Coventry, United KingdomHQ checked Sep 20, 2026	51-200	28 contacts →
	Partial 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 20, 2026
8	Excel Water LTD	Partial evidence	Castleford, United KingdomHQ checked Sep 20, 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 20, 2026
9	Stuart Wells	Indirect evidence	Shropham, United KingdomHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “Stuart Wells boasts over 30 years’ experience in construction dewatering and well services.” Source: RevenueBase Database · checked Sep 20, 2026
10	OGI Groundwater Specialists LTD	Partial evidence	Durham, United KingdomHQ checked Sep 20, 2026	11-50	14 contacts →
	Partial evidence “OGI has more than 30 years of experience in providing groundwater related services to clients and contractors in the United Kingdom and abroad.” Source: RevenueBase Database · checked Sep 20, 2026
11	Aquabio LTD	Indirect evidence	Worcester, United KingdomHQ checked Sep 20, 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 20, 2026
12	Kennet Water LTD	Partial evidence	Berkshire, United KingdomHQ checked Sep 20, 2026	11-50	11 contacts →
	Partial evidence “Kennet Water supplies equipment and components to water treatment professionals.” Source: RevenueBase Database · checked Sep 20, 2026
13	PAGEO	Indirect evidence	Corby, United KingdomHQ checked Sep 20, 2026	11-50	10 contacts →
	Indirect evidence “PAG are design, supply and installation experts in ground gas Protection and Contaminated land issues.” Source: RevenueBase Database · checked Sep 20, 2026
14	Water Tecnik LTD	Partial evidence	Newry, United KingdomHQ checked Sep 20, 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 20, 2026
15	Puretec Separations	Partial evidence	Ledbury, United KingdomHQ checked Sep 20, 2026	11-50	9 contacts →
	Partial evidence “PureTec Separations is a leader in technologies and customer experience within the water treatment and product processing industries.” Source: RevenueBase Database · checked Sep 20, 2026
16	A Spec Environmental LTD	Partial evidence	Camberley, United KingdomHQ checked Sep 20, 2026	11-50	8 contacts →
	Partial evidence “Our expertise spans the full spectrum of water treatment, including adherence to BSRIA codes and the application of CPC Filtration methodology.” Source: RevenueBase Database · checked Sep 20, 2026
17	Kelly Tanks LTD	Partial evidence	Stafford, United KingdomHQ checked Sep 20, 2026	1-10	8 contacts →
	Partial 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 20, 2026
18	Tech Environment UK LTD	Indirect evidence	Guildford, United KingdomHQ checked Sep 20, 2026	11-50	7 contacts →
	Indirect evidence “Tech Environment UK Co.” Source: RevenueBase Database · checked Sep 20, 2026
19	Project-Dewatering Limited	Partial evidence	Ipswich, United KingdomHQ checked Sep 20, 2026	11-50	6 contacts →
	Partial evidence “Project Dewatering Limited is part of the Holscher Group, Europe's largest construction dewatering and groundwater engineering contractor with revenues in excess of £100 million.” Source: RevenueBase Database · checked Sep 20, 2026
20	Adaptive Process Solutions	Partial evidence	Aberdeen, United KingdomHQ checked Sep 20, 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 20, 2026
21	Primary Water Group	Indirect evidence	Cadishead Manchester, United KingdomHQ checked Sep 20, 2026	11-50	6 contacts →
	Indirect evidence “Established in 2006, Primary Water Group operates nationally from offices based in Manchester.” Source: RevenueBase Database · checked Sep 20, 2026
22	Hydra Clear Process Water	Partial evidence	Warrington, United KingdomHQ checked Sep 20, 2026	1-10	5 contacts →
	Partial 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 20, 2026
23	Soilutions LTD	Partial evidence	Edinburgh, United KingdomHQ checked Sep 20, 2026	1-10	5 contacts →
	Partial evidence “Soilutions are specialists in the remediation of contaminated soil and groundwater.” Source: RevenueBase Database · checked Sep 20, 2026
24	Cadar Limited	Indirect evidence	Market Harborough, United KingdomHQ checked Sep 20, 2026	1-10	5 contacts →
	Indirect evidence “CADAR LIMITED is a mechanical or industrial engineering company based out of Rockingham Rd, Market Harborough, LEICESTERSHIRE, United Kingdom.” Source: RevenueBase Database · checked Sep 20, 2026
25	Bagnall Environmental	Partial evidence	Cheadle, United KingdomHQ checked Sep 20, 2026	1-10	4 contacts →
	Partial evidence “Water Treatment Plant Specialists, Bagnall Construction Ltd supply and installation of filter bed components including PCC wall units, drainage tiles and vent systems, Blast…” 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: groundwater 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 groundwater treatment companies.
Partial evidence: Its own public description names part of groundwater treatment companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name groundwater 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 80 groundwater treatment companies based in the United Kingdom

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Groundwater treatment companies based in the United Kingdom at a glance

As of Sep 20, 2026

42.6%Verified-email coverage

10.1Average contacts per company

11-50Median size (employees)

3.8%Largest-city concentration · Guildford

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 80 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 groundwater 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 “groundwater 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 groundwater 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 groundwater 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, 343 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 groundwater 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 groundwater treatment companies are there based in the United Kingdom?

RevenueBase identified 80 groundwater 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?

Severn Trent Services, headquartered in Coventry, tops this list with the largest team on record.

Which city has the most groundwater treatment companies?

Guildford leads with 3 headquartered companies, followed by Manchester (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 343 verified decision-maker contacts tracked across these 80 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.