Company lists · Data refreshed September 2026
Top 25 Water resource management firms based in the United Kingdom
RevenueBase identified 244 water resource management firms headquartered in the United Kingdom as of September 2026 and tracks 15,631 professional contacts across them, including 5,309 with verified work emails. London is the largest hub.
This list covers water resource management firms 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 22, 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.
The 25 largest water resource management firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,636 contacts → | ||||
Strong evidence “At Pentair, we help the world sustainably move, improve, and enjoy water, life’s most essential resource.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 3,430 contacts → | ||||
Partial evidence “Anglian Water supply water and water recycling services to more than six million domestic and business customers in the east of England and Hartlepool.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 842 contacts → | ||||
Partial evidence “Together with our strategic partners, we can address everything from supporting vulnerable customers, water quality, asset performance and leak detection, to integrated planning…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 217 contacts → | ||||
Indirect evidence “Supported by a network of specialist consulting engineers, environmentalists and our own collective experience, our philosophy is simple: to provide a qualitative economic and…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 166 contacts → | ||||
Strong evidence “Hydro International, a CRH Company, provides advanced products, services and expertise to help municipal, industrial and construction customers to improve their water management…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 122 contacts → | ||||
Partial evidence “Global Water Intelligence (GWI) is the unchallenged leader in high-value business intelligence for the water industry.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 112 contacts → | ||||
Strong evidence “AWMS, part of Alumasc Group, is the first joined-up brand in integrated water management.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 103 contacts → | ||||
Strong evidence “Established in the UK in 1986, MRAG Ltd is a consultancy company dedicated to promoting sustainable use of aquatic resources through sound integrated management policies and…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 73 contacts → | ||||
Strong evidence “Waterscan is an industry-leading sustainable water management company.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 61 contacts → | ||||
Strong evidence “Services we provide: Fixed Energy Procurement Flexible Energy Procurement Building Management Carbon Solutions Waste Management Invoice Validation (Electricity, Gas, Water)…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 59 contacts → | ||||
Partial evidence “Waterco Datrys is a leading consultancy in water and environmental engineering, formed through the merger of Waterco and Datrys in 2024.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 51 contacts → | ||||
Partial evidence “As the UK’s foremost provider of alternative water services, we’re dedicated to ensuring that every business and household has access to a quality water supply – no matter what.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 51 contacts → | ||||
Strong evidence “water2business is a leading retailer of water and waste water management solutions to businesses and organisations across England and Scotland.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 43 contacts → | ||||
Strong 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 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 39 contacts → | ||||
Strong evidence “Veriflo Ltd - a professional strategic project management company, specialising in clean water asset services.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 36 contacts → | ||||
Indirect evidence “CBEC eco-engineering is a leading UK environmental consultant specialising in the provision of eco-engineering solutions for the aquatic environment.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 32 contacts → | ||||
Indirect evidence “TB Associates was founded in the United Kingdom in 2004 and is a research-based engineering consultancy company.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 31 contacts → | ||||
Strong evidence “Watertight Management has established itself as a leader in the provision of Clean and Waste water management services.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 28 contacts → | ||||
Partial evidence “Aegaea provides expertise in water, civils and environment including discharge of conditions for outline and full planning.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 28 contacts → | ||||
Indirect evidence “Irrigation Engineers Ltd is a consultancy with international experience having worked throughout Europe, Africa, the Middle East and Asia.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 25 contacts → | ||||
Partial evidence “At Artesia, our mission is to make the water sector more progressive, inclusive, and resilient.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 24 contacts → | ||||
Indirect evidence “Established in 1996, Mabbett is a leading consultancy offering Planning, Design, Environmental, Engineering and Safety services with a focus on helping clients to “See a…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 24 contacts → | ||||
Strong evidence “Aquevo Limited, headquartered in North West London, is a leading provider of integrated water management services.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 21 contacts → | ||||
Strong evidence “Envireau Water is one of the UK's leading independent consultancies specialising in water management and environmental regulation.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
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: water resource management firms. 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 water resource management firms.
- Partial evidence
- Its own public description names part of water resource management firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name water resource management firms. 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 244 water resource management firms based in the United Kingdom
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 5,309 reachable decision-makers.
Free signup · no credit card
Water resource management firms based in the United Kingdom at a glance
As of Sep 22, 2026Companies by employee count
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 244 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 water resource management firms, 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 “water resource management firms”. 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 water resource management firms), 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 water resource management firms, 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, 5,309 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 22, 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 water resource management firms, 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 water resource management firms are there based in the United Kingdom?
RevenueBase identified 244 water resource management firms 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?
Pentair, headquartered in London, tops this list with the largest team on record.
Which city has the most water resource management firms?
London leads with 21 headquartered companies, followed by Wallingford (6) and Bristol (5).
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 5,309 verified decision-maker contacts tracked across these 244 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 22, 2026.
Ready to reach these companies? Verified emails and direct dials for all 244 water resource management firms based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Water resource management firms by geography
- Water resource management firms based in Belo Horizonte, Brazil
- Water resource management firms based in Porto Alegre, Brazil
- Water resource management firms based in Sao Paulo, Brazil
- Water resource management firms based in Argentina
- Water resource management firms based in Australia
- Water resource management firms based in Austria
- Water resource management firms based in Belgium
- Water resource management firms based in Brazil
- Water resource management firms based in Canada
- Water resource management firms based in Chile
- Water resource management firms based in Colombia
- Water resource management firms based in Denmark
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Water resource management firms based in Belo Horizonte, Brazil
- Water resource management firms based in Porto Alegre, Brazil
- Water resource management firms based in Sao Paulo, Brazil
- Water resource management firms based in Argentina
- Water resource management firms based in Australia
- Water resource management firms based in Austria