Company lists · Data refreshed September 2026
Top 25 Water companies based in the United Kingdom
RevenueBase identified 607 company matches for water companies associated with the United Kingdom as of September 2026 and tracks 55,993 professional contacts across them, including 20,802 with verified work emails. London is the largest hub.
This list covers company matches for water companies associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,636 contacts → | ||||
Exact match “At Pentair, we help the world sustainably move, improve, and enjoy water, life’s most essential resource.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 2 | 5,648 contacts → | ||||
Exact match “Thames Water is the UK’s biggest water and wastewater services provider, providing 2.7 billion litres of drinking water and safely removing 4.6 billion litres of wastewater every…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 3 | 5,563 contacts → | ||||
Exact match “Water is wonderful.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 4 | 3,430 contacts → | ||||
Exact match “Anglian Water supply water and water recycling services to more than six million domestic and business customers in the east of England and Hartlepool.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 5 | 2,776 contacts → | ||||
Exact match “Water is essential to life and to the communities in which we live and work across every corner of Scotland.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 6 | 2,715 contacts → | ||||
Exact match “We’re Yorkshire Water.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 7 | 2,308 contacts → | ||||
Exact match “We are one of the largest water and wastewater companies in the South East of England and thrive on the passion and hard work of more than employees.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 8 | 1,868 contacts → | ||||
Exact match “Bath-times, half-times, party-times, meeting-times, and cooking-times.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 9 | 1,629 contacts → | ||||
Exact match “NWG (Northumbrian Water Group) provides water and sewerage services to 2.7 million people in the North East of England as Northumbrian Water, and water services to 1.5 million…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 10 | 1,256 contacts → | ||||
Exact match “Wessex Water is the regional water and sewage treatment business serving an area of the south west of England, including Dorset, Somerset, Bristol, most of Wiltshire and parts of…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 11 | 1,153 contacts → | ||||
Exact match “With a significant national workforce operating daily in local communities, we support our clients to keep their assets resilient ensuring customer taps flow, and all wastewater…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 12 | 1,124 contacts → | ||||
Exact match “South West Water is part of Pennon Group plc.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 13 | 928 contacts → | ||||
Exact match “Our vision is to be the leading community-focused water company.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 14 | 636 contacts → | ||||
Exact match “We supply top quality drinking water to 2.2 million customers in the south east of England.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 15 | 596 contacts → | ||||
Exact match “Northern Ireland Water is a Government Owned Company (GoCo), set up in April 2007 to provide the water and sewerage services in Northern Ireland.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 16 | 498 contacts → | ||||
Exact match “RSE is a trusted clean water technology company, developing market leading products and solutions for purifying drinking water, recycling wastewater and cleaning water in…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 17 | 477 contacts → | ||||
Exact match “Selwood is your trusted partner in mission-critical water handling, storage, and treatment solutions across the UK.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 18 | 302 contacts → | ||||
Exact match “We're the UK's largest business water retailer, providing organisations of all sizes with billing, account management, meter reading and water efficiency services.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 19 | 299 contacts → | ||||
Exact match “Bristol Water is part of Pennon Group plc.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 20 | 286 contacts → | ||||
Exact match “We’re one of the largest water retailers in the UK, known for our passionate approach to customer service and exceptional knowledge of the water industry.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 21 | 283 contacts → | ||||
Exact match “We’re the UK’s largest independent business water retailer, trusted by more than UK businesses.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 22 | 273 contacts → | ||||
Exact match “Pennon is one of the largest environmental infrastructure groups in the UK.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 23 | 252 contacts → | ||||
Exact match “Portsmouth Water have been supplying water to Portsmouth and the surrounding area since 1857.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 24 | 243 contacts → | ||||
Exact match “Highland Spring Group is one of the UK’s leading producers of natural source water.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 25 | 238 contacts → | ||||
Exact match “South Staffs Water is a private water company formed in 1853 to provide water to the inhabitants of the Black Country.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “water companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 607 water companies based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 20,802 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Water companies based in the United Kingdom at a glance
As of Sep 19, 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 607 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United Kingdom whose business descriptions match “water companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 20,802 professional contacts with verified work emails across the full matched dataset. 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.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “water companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many water companies are there based in the United Kingdom?
RevenueBase identified 607 company matches for water companies associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Pentair tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most water companies?
London leads with 39 company records, followed by Bristol (12) and Birmingham (8).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 20,802 professional contacts with verified work emails tracked across these 607 companies; direct dials are available where recorded.
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.
Ready to reach these companies? Verified emails and direct dials for all 607 water companies based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Water companies by geography
- Water companies based in Ahmedabad, India
- Water companies based in Mumbai, India
- Water companies based in New Delhi, India
- Water companies based in Pune, India
- Water companies based in Argentina
- Water companies based in Australia
- Water companies based in Austria
- Water companies based in Belgium
- Water companies based in Brazil
- Water companies based in Canada
- Water companies based in Chile
- Water companies based in Colombia
Browse the directory
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 SmartSearch, 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
Company intelligence · public preview
Top 25 water companies based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 607 matching company records for water companies based in the United Kingdom, with 55,993 tracked contacts and 20,802 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 19, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 water companies based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Pentairpentair.com HQ: London, United KingdomReported employees: 5,001-10,000 | London, United Kingdom | 5,001-10,000 | Exact match | 6,636 contacts → |
“At Pentair, we help the world sustainably move, improve, and enjoy water, life’s most essential resource.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Thames Waterthameswater.co.uk HQ: Reading, United KingdomReported employees: 1,001-5,000 | Reading, United Kingdom | 1,001-5,000 | Exact match | 5,648 contacts → |
“Thames Water is the UK’s biggest water and wastewater services provider, providing 2.7 billion litres of drinking water and safely removing 4.6 billion litres of wastewater every…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Severn Trentseverntrent.com HQ: Coventry, United KingdomReported employees: 5,001-10,000 | Coventry, United Kingdom | 5,001-10,000 | Exact match | 5,563 contacts → |
“Water is wonderful.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Anglian Water Servicesanglianwater.co.ukHQ: Huntingdon, United KingdomReported employees: 5,001-10,000 | Huntingdon, United Kingdom | 5,001-10,000 | Exact match | 3,430 contacts → |
“Anglian Water supply water and water recycling services to more than six million domestic and business customers in the east of England and Hartlepool.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Scottish Waterscottishwater.co.uk HQ: Stepps, United KingdomReported employees: 1,001-5,000 | Stepps, United Kingdom | 1,001-5,000 | Exact match | 2,776 contacts → |
“Water is essential to life and to the communities in which we live and work across every corner of Scotland.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Yorkshire Wateryorkshirewater.com HQ: Bradford, United KingdomReported employees: 1,001-5,000 | Bradford, United Kingdom | 1,001-5,000 | Exact match | 2,715 contacts → |
“We’re Yorkshire Water.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Southern Watersouthernwater.co.uk HQ: Worthing, United KingdomReported employees: 1,001-5,000 | Worthing, United Kingdom | 1,001-5,000 | Exact match | 2,308 contacts → |
“We are one of the largest water and wastewater companies in the South East of England and thrive on the passion and hard work of more than employees.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | DŴR Cymru Welsh Waterdwrcymru.com HQ: Cardiff, United KingdomReported employees: 1,001-5,000 | Cardiff, United Kingdom | 1,001-5,000 | Exact match | 1,868 contacts → |
“Bath-times, half-times, party-times, meeting-times, and cooking-times.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | NWG Northumbrian Water Groupnwl.co.uk HQ: Durham, United KingdomReported employees: 1,001-5,000 | Durham, United Kingdom | 1,001-5,000 | Exact match | 1,629 contacts → |
“NWG (Northumbrian Water Group) provides water and sewerage services to 2.7 million people in the North East of England as Northumbrian Water, and water services to 1.5 million…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Wessex Waterwessexwater.co.uk HQ: Bath, United KingdomReported employees: 1,001-5,000 | Bath, United Kingdom | 1,001-5,000 | Exact match | 1,256 contacts → |
“Wessex Water is the regional water and sewage treatment business serving an area of the south west of England, including Dorset, Somerset, Bristol, most of Wiltshire and parts of…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Morrison Water Servicesmorrisonws.com HQ: Stevenage, United KingdomReported employees: 1,001-5,000 | Stevenage, United Kingdom | 1,001-5,000 | Exact match | 1,153 contacts → |
“With a significant national workforce operating daily in local communities, we support our clients to keep their assets resilient ensuring customer taps flow, and all wastewater…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | South West Watersouthwestwater.co.uk HQ: Exeter, United KingdomReported employees: 1,001-5,000 | Exeter, United Kingdom | 1,001-5,000 | Exact match | 1,124 contacts → |
“South West Water is part of Pennon Group plc.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Affinity Wateraffinitywater.co.ukHQ: Hatfield, United KingdomReported employees: 1,001-5,000 | Hatfield, United Kingdom | 1,001-5,000 | Exact match | 928 contacts → |
“Our vision is to be the leading community-focused water company.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | South East Water UKsoutheastwater.co.uk HQ: Snodland, United KingdomReported employees: 501-1,000 | Snodland, United Kingdom | 501-1,000 | Exact match | 636 contacts → |
“We supply top quality drinking water to 2.2 million customers in the south east of England.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Northern Ireland Waterniwater.com HQ: Belfast, United KingdomReported employees: 1,001-5,000 | Belfast, United Kingdom | 1,001-5,000 | Exact match | 596 contacts → |
“Northern Ireland Water is a Government Owned Company (GoCo), set up in April 2007 to provide the water and sewerage services in Northern Ireland.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | RSEross-eng.com HQ: Inverness Highlands, United KingdomReported employees: 501-1,000 | Inverness Highlands, United Kingdom | 501-1,000 | Exact match | 498 contacts → |
“RSE is a trusted clean water technology company, developing market leading products and solutions for purifying drinking water, recycling wastewater and cleaning water in…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Selwood LTDselwood.co.ukHQ: Eastleigh, United KingdomReported employees: 501-1,000 | Eastleigh, United Kingdom | 501-1,000 | Exact match | 477 contacts → |
“Selwood is your trusted partner in mission-critical water handling, storage, and treatment solutions across the UK.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Water Pluswater-plus.co.uk HQ: Stoke-on-trent, United KingdomReported employees: 201-500 | Stoke-on-trent, United Kingdom | 201-500 | Exact match | 302 contacts → |
“We're the UK's largest business water retailer, providing organisations of all sizes with billing, account management, meter reading and water efficiency services.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Bristol Waterbristolwater.co.uk HQ: Bristol, United KingdomReported employees: 201-500 | Bristol, United Kingdom | 201-500 | Exact match | 299 contacts → |
“Bristol Water is part of Pennon Group plc.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Business Streambusiness-stream.co.uk HQ: Edinburgh, United KingdomReported employees: 201-500 | Edinburgh, United Kingdom | 201-500 | Exact match | 286 contacts → |
“We’re one of the largest water retailers in the UK, known for our passionate approach to customer service and exceptional knowledge of the water industry.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Castle Watercastlewater.co.uk HQ: Blairgowrie, United KingdomReported employees: 201-500 | Blairgowrie, United Kingdom | 201-500 | Exact match | 283 contacts → |
“We’re the UK’s largest independent business water retailer, trusted by more than UK businesses.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Pennon Group PLCpennon-group.co.uk HQ: Exeter, United KingdomReported employees: 1,001-5,000 | Exeter, United Kingdom | 1,001-5,000 | Exact match | 273 contacts → |
“Pennon is one of the largest environmental infrastructure groups in the UK.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Portsmouth Waterportsmouthwater.co.uk HQ: Havant, United KingdomReported employees: 201-500 | Havant, United Kingdom | 201-500 | Exact match | 252 contacts → |
“Portsmouth Water have been supplying water to Portsmouth and the surrounding area since 1857.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Highland Spring LTDhighlandspring.com HQ: Blackford, United KingdomReported employees: 201-500 | Blackford, United Kingdom | 201-500 | Exact match | 243 contacts → |
“Highland Spring Group is one of the UK’s leading producers of natural source water.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | South Staffs Watersouth-staffs-water.co.uk HQ: Walsall, United KingdomReported employees: 501-1,000 | Walsall, United Kingdom | 501-1,000 | Exact match | 238 contacts → |
“South Staffs Water is a private water company formed in 1853 to provide water to the inhabitants of the Black Country.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 607 company matches
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Water companies: dataset insights
September 19, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
600 records in the displayed employee bands.
7 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 607 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 19, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for water companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many water companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 607 matching company records, 55,993 tracked contacts and 20,802 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 19, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Water companies by geography
- Water companies based in Ahmedabad, India
- Water companies based in Mumbai, India
- Water companies based in New Delhi, India
- Water companies based in Pune, India
- Water companies based in Argentina
- Water companies based in Australia
- Water companies based in Austria
- Water companies based in Belgium
- Water companies based in Brazil
- Water companies based in Canada
- Water companies based in Chile
- Water companies based in Colombia
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 water companies based in the United Kingdom. Snapshot: September 19, 2026. https://revenuebase.ai/companies/water-companies/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 water companies based in the United Kingdom
RevenueBase records 607 matching company records for water companies based in the United Kingdom, with 55,993 tracked contacts and 20,802 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 19, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 water companies based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Pentairpentair.com HQ: London, United KingdomReported employees: 5,001-10,000 | London, United Kingdom | 5,001-10,000 | Exact match | 6,636 contacts → |
“At Pentair, we help the world sustainably move, improve, and enjoy water, life’s most essential resource.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Thames Waterthameswater.co.uk HQ: Reading, United KingdomReported employees: 1,001-5,000 | Reading, United Kingdom | 1,001-5,000 | Exact match | 5,648 contacts → |
“Thames Water is the UK’s biggest water and wastewater services provider, providing 2.7 billion litres of drinking water and safely removing 4.6 billion litres of wastewater every…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Severn Trentseverntrent.com HQ: Coventry, United KingdomReported employees: 5,001-10,000 | Coventry, United Kingdom | 5,001-10,000 | Exact match | 5,563 contacts → |
“Water is wonderful.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Anglian Water Servicesanglianwater.co.uk HQ: Huntingdon, United KingdomReported employees: 5,001-10,000 | Huntingdon, United Kingdom | 5,001-10,000 | Exact match | 3,430 contacts → |
“Anglian Water supply water and water recycling services to more than six million domestic and business customers in the east of England and Hartlepool.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Scottish Waterscottishwater.co.uk HQ: Stepps, United KingdomReported employees: 1,001-5,000 | Stepps, United Kingdom | 1,001-5,000 | Exact match | 2,776 contacts → |
“Water is essential to life and to the communities in which we live and work across every corner of Scotland.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Yorkshire Wateryorkshirewater.com HQ: Bradford, United KingdomReported employees: 1,001-5,000 | Bradford, United Kingdom | 1,001-5,000 | Exact match | 2,715 contacts → |
“We’re Yorkshire Water.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Southern Watersouthernwater.co.uk HQ: Worthing, United KingdomReported employees: 1,001-5,000 | Worthing, United Kingdom | 1,001-5,000 | Exact match | 2,308 contacts → |
“We are one of the largest water and wastewater companies in the South East of England and thrive on the passion and hard work of more than employees.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | DŴR Cymru Welsh Waterdwrcymru.com HQ: Cardiff, United KingdomReported employees: 1,001-5,000 | Cardiff, United Kingdom | 1,001-5,000 | Exact match | 1,868 contacts → |
“Bath-times, half-times, party-times, meeting-times, and cooking-times.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | NWG Northumbrian Water Groupnwl.co.uk HQ: Durham, United KingdomReported employees: 1,001-5,000 | Durham, United Kingdom | 1,001-5,000 | Exact match | 1,629 contacts → |
“NWG (Northumbrian Water Group) provides water and sewerage services to 2.7 million people in the North East of England as Northumbrian Water, and water services to 1.5 million…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Wessex Waterwessexwater.co.uk HQ: Bath, United KingdomReported employees: 1,001-5,000 | Bath, United Kingdom | 1,001-5,000 | Exact match | 1,256 contacts → |
“Wessex Water is the regional water and sewage treatment business serving an area of the south west of England, including Dorset, Somerset, Bristol, most of Wiltshire and parts of…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Morrison Water Servicesmorrisonws.com HQ: Stevenage, United KingdomReported employees: 1,001-5,000 | Stevenage, United Kingdom | 1,001-5,000 | Exact match | 1,153 contacts → |
“With a significant national workforce operating daily in local communities, we support our clients to keep their assets resilient ensuring customer taps flow, and all wastewater…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | South West Watersouthwestwater.co.uk HQ: Exeter, United KingdomReported employees: 1,001-5,000 | Exeter, United Kingdom | 1,001-5,000 | Exact match | 1,124 contacts → |
“South West Water is part of Pennon Group plc.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Affinity Wateraffinitywater.co.uk HQ: Hatfield, United KingdomReported employees: 1,001-5,000 | Hatfield, United Kingdom | 1,001-5,000 | Exact match | 928 contacts → |
“Our vision is to be the leading community-focused water company.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | South East Water UKsoutheastwater.co.uk HQ: Snodland, United KingdomReported employees: 501-1,000 | Snodland, United Kingdom | 501-1,000 | Exact match | 636 contacts → |
“We supply top quality drinking water to 2.2 million customers in the south east of England.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Northern Ireland Waterniwater.com HQ: Belfast, United KingdomReported employees: 1,001-5,000 | Belfast, United Kingdom | 1,001-5,000 | Exact match | 596 contacts → |
“Northern Ireland Water is a Government Owned Company (GoCo), set up in April 2007 to provide the water and sewerage services in Northern Ireland.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | RSEross-eng.com HQ: Inverness Highlands, United KingdomReported employees: 501-1,000 | Inverness Highlands, United Kingdom | 501-1,000 | Exact match | 498 contacts → |
“RSE is a trusted clean water technology company, developing market leading products and solutions for purifying drinking water, recycling wastewater and cleaning water in…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Selwood LTDselwood.co.uk HQ: Eastleigh, United KingdomReported employees: 501-1,000 | Eastleigh, United Kingdom | 501-1,000 | Exact match | 477 contacts → |
“Selwood is your trusted partner in mission-critical water handling, storage, and treatment solutions across the UK.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Water Pluswater-plus.co.uk HQ: Stoke-on-trent, United KingdomReported employees: 201-500 | Stoke-on-trent, United Kingdom | 201-500 | Exact match | 302 contacts → |
“We're the UK's largest business water retailer, providing organisations of all sizes with billing, account management, meter reading and water efficiency services.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Bristol Waterbristolwater.co.uk HQ: Bristol, United KingdomReported employees: 201-500 | Bristol, United Kingdom | 201-500 | Exact match | 299 contacts → |
“Bristol Water is part of Pennon Group plc.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Business Streambusiness-stream.co.uk HQ: Edinburgh, United KingdomReported employees: 201-500 | Edinburgh, United Kingdom | 201-500 | Exact match | 286 contacts → |
“We’re one of the largest water retailers in the UK, known for our passionate approach to customer service and exceptional knowledge of the water industry.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Castle Watercastlewater.co.uk HQ: Blairgowrie, United KingdomReported employees: 201-500 | Blairgowrie, United Kingdom | 201-500 | Exact match | 283 contacts → |
“We’re the UK’s largest independent business water retailer, trusted by more than UK businesses.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Pennon Group PLCpennon-group.co.uk HQ: Exeter, United KingdomReported employees: 1,001-5,000 | Exeter, United Kingdom | 1,001-5,000 | Exact match | 273 contacts → |
“Pennon is one of the largest environmental infrastructure groups in the UK.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Portsmouth Waterportsmouthwater.co.uk HQ: Havant, United KingdomReported employees: 201-500 | Havant, United Kingdom | 201-500 | Exact match | 252 contacts → |
“Portsmouth Water have been supplying water to Portsmouth and the surrounding area since 1857.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Highland Spring LTDhighlandspring.com HQ: Blackford, United KingdomReported employees: 201-500 | Blackford, United Kingdom | 201-500 | Exact match | 243 contacts → |
“Highland Spring Group is one of the UK’s leading producers of natural source water.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | South Staffs Watersouth-staffs-water.co.uk HQ: Walsall, United KingdomReported employees: 501-1,000 | Walsall, United Kingdom | 501-1,000 | Exact match | 238 contacts → |
“South Staffs Water is a private water company formed in 1853 to provide water to the inhabitants of the Black Country.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 607 company matches
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Water companies: dataset insights
September 19, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
600 records in the displayed employee bands.
7 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 607 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 19, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for water companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many water companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 607 matching company records, 55,993 tracked contacts and 20,802 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 19, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Water companies by geography
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Browse the directory
Cite this list
RevenueBase Data Team. Top 25 water companies based in the United Kingdom. Snapshot: September 19, 2026. https://revenuebase.ai/companies/water-companies/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗