Company lists · Data refreshed November 2026

Top 25 Water infrastructure operators based in the United Kingdom

RevenueBase identified 160 company matches for water infrastructure operators associated with the United Kingdom as of November 2026 and tracks 31,992 professional contacts across them, including 10,834 with verified work emails. London is the largest hub.

This list covers company matches for water infrastructure operators 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 November 6, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
160Companies
31,992Contacts tracked
10,834Verified emails
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The 25 largest water infrastructure operators based in the United Kingdom

Ranked by team size
Top 25 of 160 company matches for water infrastructure operators based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchReading, United KingdomHQ recorded Nov 6, 20261,001-5,0006,329 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 · Nov 6, 2026 · View company records in RevenueBase
2Exact matchCoventry, United KingdomHQ recorded Nov 6, 20265,001-10,0006,089 contacts →

Exact match

“Water is wonderful.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchBradford, United KingdomHQ recorded Nov 6, 20261,001-5,0003,095 contacts →

Exact match

“We’re Yorkshire Water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchCardiff, United KingdomHQ recorded Nov 6, 20261,001-5,0001,970 contacts →

Exact match

“Bath-times, half-times, party-times, meeting-times, and cooking-times.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchDurham, United KingdomHQ recorded Nov 6, 20261,001-5,0001,757 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 · Nov 6, 2026 · View company records in RevenueBase
6Exact matchStevenage, United KingdomHQ recorded Nov 6, 20261,001-5,0001,142 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 · Nov 6, 2026 · View company records in RevenueBase
7Exact matchHatfield, United KingdomHQ recorded Nov 6, 20261,001-5,0001,028 contacts →

Exact match

“Our vision is to be the leading community-focused water company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBelfast, United KingdomHQ recorded Nov 6, 20261,001-5,000625 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 · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBamber Bridge, United KingdomHQ recorded Nov 6, 20261,001-5,000342 contacts →

Exact match

“Sapphire Utility Solutions has quickly become a trusted name in the utility, transport and highways sectors, known for our capabilities in delivering innovative solutions to meet…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchExeter, United KingdomHQ recorded Nov 6, 20261,001-5,000312 contacts →

Exact match

“Pennon is one of the largest environmental infrastructure groups in the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchCoventry, United KingdomHQ recorded Nov 6, 20261,001-5,000310 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBristol, United KingdomHQ recorded Nov 6, 2026201-500309 contacts →

Exact match

“Bristol Water is part of Pennon Group plc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchWalsall, United KingdomHQ recorded Nov 6, 2026501-1,000257 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 · Nov 6, 2026 · View company records in RevenueBase
14Exact matchWorcester, United KingdomHQ recorded Nov 6, 2026201-500195 contacts →

Exact match

“Originally established in 1977, OnSite is a South Staffordshire Group owned company that has grown through strategic acquisition and organic expansion to become one of the UK's…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchKettering, United KingdomHQ recorded Nov 6, 202651-200121 contacts →

Exact match

“AWMS, part of Alumasc Group, is the first joined-up brand in integrated water management.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchWalsall, United KingdomHQ recorded Nov 6, 20261,001-5,00066 contacts →

Exact match

“South Staffordshire Plc is an integrated services group that operates two regulated water supply businesses and offers a range of complementary services and products through its…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBristol, United KingdomHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“water2business is a leading retailer of water and waste water management solutions to businesses and organisations across England and Scotland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchMaghera, United KingdomHQ recorded Nov 6, 202651-20056 contacts →

Exact match

“With over 40 year’s industry experience, we are a leading engineering contractor with specialist expertise in the water and wastewater sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchColchester, United KingdomHQ recorded Nov 6, 202651-20052 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchEast Malling, United KingdomHQ recorded Nov 6, 202611-5049 contacts →

Exact match

“Veriflo Ltd - a professional strategic project management company, specialising in clean water asset services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchNewcastle Upon Tyne, United KingdomHQ recorded Nov 6, 202611-5041 contacts →

Exact match

“Origin Tech are a multi award winning UK based Water technology company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchPortland, United KingdomHQ recorded Nov 6, 2026201-50038 contacts →

Exact match

“Hydro International, a CRH Company, provides advanced products, services and expertise to help municipal, industrial and construction customers to improve their water management…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSelkirk, United KingdomHQ recorded Nov 6, 202611-5033 contacts →

Exact match

“Our teams are dedicated to supporting our clients to protect, maintain and improve water quality within treatment and distribution systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchBromsgrove, United KingdomHQ recorded Nov 6, 202651-20031 contacts →

Exact match

“Watertight Management has established itself as a leader in the provision of Clean and Waste water management services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSkipton, United KingdomHQ recorded Nov 6, 202611-5029 contacts →

Exact match

“ACWA Services Limited is a Municipal and Industrial Water and Wastewater Treatment company located in Skipton, United Kingdom.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 160 water infrastructure operators based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 10,834 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Water infrastructure operators based in the United Kingdom at a glance

As of Nov 6, 2026
33.9%Verified-email coverage
199.9Average contacts per company
11-50Median size (employees)
5.0%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
50
11-50
50
51-200
28
201-500
6
501-1,000
5
1,001-5,000
15
5,001-10,000
2

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 160 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 infrastructure operators” 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 10,834 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 November 6, 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 infrastructure operators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many water infrastructure operators are there based in the United Kingdom?

RevenueBase identified 160 company matches for water infrastructure operators associated with the United Kingdom as of November 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?

Thames Water tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most water infrastructure operators?

London leads with 8 company records, followed by Cambridge (3) and Hatfield (3).

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 10,834 professional contacts with verified work emails tracked across these 160 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 November 6, 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 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.