Company lists · Data refreshed September 2026
Top 25 Water efficiency consultants based in the United Kingdom
RevenueBase identified 96 water efficiency consultants headquartered in the United Kingdom as of September 2026 and tracks 8,082 professional contacts across them, including 2,830 with verified work emails. London is the largest hub.
This list covers water efficiency consultants 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 efficiency consultants based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,636 contacts → | ||||
Partial 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 | 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. | |||||
| 3 | 101 contacts → | ||||
Partial evidence “Isle’s vision is to be the leading catalyst in water industry transformation through exceptional business insight, technology, and innovative solutions.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 51 contacts → | ||||
Partial 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. | |||||
| 5 | 46 contacts → | ||||
Partial evidence “Aqualogic is an integrated water conservation and demand management business, helping water companies reduce waste, improve performance and strengthen long-term resilience through…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 28 contacts → | ||||
Partial 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. | |||||
| 7 | 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. | |||||
| 8 | 21 contacts → | ||||
Indirect evidence “Sustainable Solutions, Significant Savings ADSM is the leading utility management specialist, with a proven track record of helping public and private sector organisations meet…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 16 contacts → | ||||
Indirect evidence “A sister company of Utility Stream (USL) Limited, we are Wodr.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 14 contacts → | ||||
Partial evidence “WCI Group Ltd is the leading expert in water and wastewater engineering, delivering innovative solutions with over four decades of expertise.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 13 contacts → | ||||
Indirect evidence “adi Environmental is dynamic and flexible, providing consultative solutions to UK based blue chip organisations within the Pharmaceutical, Food & Manufacturing sectors as well as…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 12 contacts → | ||||
Partial evidence “Welcome to Smarta Water.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 11 contacts → | ||||
Partial evidence “We offer a range of products and services designed to help you use less water, waste less water and save more water.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 11 contacts → | ||||
Indirect evidence “Award-winning sustainability consulting, testing and retrofit company, based in Bristol but operating nationwide.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 9 contacts → | ||||
Partial evidence “Water consumption reduction experts – auditing, installing, monitoring, advising, designing and manufacturing.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 8 contacts → | ||||
Partial evidence “At BEM Services, our team of Energy Consultants work closely with our Mechanical and Electrical Design Engineers, to be able to advise our clients on how to minimise energy usage…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 6 contacts → | ||||
Partial evidence “Helping businesses manage and procure energy & water for over 27 years.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 5 contacts → | ||||
Partial evidence “The team at Everything Water & Energy have been working within the water sector for over 26 years, driving positive change in the water industry and helping businesses reap the…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 contacts → | ||||
Indirect evidence “Reduce energy costs?” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 5 contacts → | ||||
Partial evidence “Unlike many water companies who only focus on selling their one product or brokering for a single supplier, UK Water like to look at the full picture and save you money from the…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 contacts → | ||||
Partial evidence “At BWS, we provide unique end-to-end water management services, with exceptional and seamless customer service at our heart.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 4 contacts → | ||||
Indirect evidence “Bringing technical excellence and first rate customer focus to our customers.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 4 contacts → | ||||
Partial evidence “Founded in 1994, Watertite was established to help companies understand and better manage their water bills and water consumption.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Partial evidence “Water management is Watergen’s passion.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 3 contacts → | ||||
Strong evidence “We are an Energy Efficiency consultancy specialising in the commercial sector, particularly manufacturing, food processing, warehousing etc.” 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 efficiency consultants. 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 efficiency consultants.
- Partial evidence
- Its own public description names part of water efficiency consultants, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name water efficiency consultants. 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 96 water efficiency consultants based in the United Kingdom
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,830 reachable decision-makers.
Free signup · no credit card
Water efficiency consultants 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 96 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 efficiency consultants, 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 efficiency consultants”. 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 efficiency consultants), 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 efficiency consultants, 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, 2,830 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 efficiency consultants, 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 efficiency consultants are there based in the United Kingdom?
RevenueBase identified 96 water efficiency consultants 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 efficiency consultants?
London leads with 6 headquartered companies, followed by Bristol (4) and Leeds (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 2,830 verified decision-maker contacts tracked across these 96 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 96 water efficiency consultants based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Water efficiency consultants by geography
- Water efficiency consultants based in Australia
- Water efficiency consultants based in Brazil
- Water efficiency consultants based in Canada
- Water efficiency consultants based in France
- Water efficiency consultants based in Germany
- Water efficiency consultants based in India
- Water efficiency consultants based in South Africa
- Water efficiency consultants based in Spain
- Water efficiency consultants based in the United States
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 efficiency consultants based in Australia
- Water efficiency consultants based in Brazil
- Water efficiency consultants based in Canada
- Water efficiency consultants based in France
- Water efficiency consultants based in Germany
- Water efficiency consultants based in India