Company lists · Data refreshed October 2026

Top 25 Drinking water system contractors based in the United Kingdom

RevenueBase identified 221 company matches for drinking water system contractors associated with the United Kingdom as of October 2026 and tracks 3,136 professional contacts across them, including 1,520 with verified work emails. London is the largest hub.

This list covers company matches for drinking water system contractors 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 October 11, 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 Oct 11, 2026 How this list was built
221Companies
3,136Contacts tracked
1,520Verified emails
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The 25 largest drinking water system contractors based in the United Kingdom

Ranked by team size
Top 25 of 221 company matches for drinking water system contractors based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 11, 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 matchStockport, United KingdomHQ recorded Oct 11, 20261,001-5,000930 contacts →

Exact match

“MWH Treatment is a leading Design and Build non-infrastructure solution provider in the UK water sector, with a water sector heritage dating back to 1820.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
2Exact matchCoventry, United KingdomHQ recorded Oct 11, 20261,001-5,000147 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 · Oct 11, 2026 · View company records in RevenueBase
3Exact matchBirmingham, United KingdomHQ recorded Oct 11, 202651-200113 contacts →

Exact match

“Enpure is a process engineering company specializing in water, wastewater and sludge treatment as well as waste-to-energy solutions with a global presence.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
4Exact matchMonmouth, United KingdomHQ recorded Oct 11, 202651-20083 contacts →

Exact match

“At Siltbuster Ltd, we operate the UK’s largest rental fleet of water treatment systems, setting the industry benchmark for rapid, reliable, and cost-effective solutions.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
5Exact matchEnfield, United KingdomHQ recorded Oct 11, 202651-20080 contacts →

Exact match

“Welcome to Gel Engineering.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
6Exact matchKent, United KingdomHQ recorded Oct 11, 202651-20064 contacts →

Exact match

“Willow Pumps provide expert services for all your pump, drainage, waste and clean water needs.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Oct 11, 2026201-50062 contacts →

Exact match

“J A Brooks was established in 1925 and has a long history in the delivery of Public health and Water services in the London and South East and hold an excellent reputation as one…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
8Exact matchStepps, United KingdomHQ recorded Oct 11, 2026201-50052 contacts →

Exact match

“How we manage water and wastewater systems now will be critical for our communities and ecosystems for many generations to come.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
9Exact matchEast Malling, United KingdomHQ recorded Oct 11, 202611-5048 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
10Exact matchFarnborough, United KingdomHQ recorded Oct 11, 202651-20046 contacts →

Exact match

“ph Water technologies are one of the leading ‘Total Environment Solutions Companies' operating within the UK.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
11Exact matchSelkirk, United KingdomHQ recorded Oct 11, 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 · Oct 11, 2026 · View company records in RevenueBase
12Exact matchRedhill, United KingdomHQ recorded Oct 11, 202611-5032 contacts →

Exact match

“Reigate Environmental Services Limited is a Water Treatment and Maintenance company based at 42 Ormside Way, Holmethorpe Industrial Estate, Redhill, Surrey, United Kingdom.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
13Exact matchColchester, United KingdomHQ recorded Oct 11, 202651-20030 contacts →

Exact match

“Lubron Water Technology UK is part of the European Market leading water treatment provider, Lubron Group, which has subsidiaries in the Netherlands, Germany and Belgium.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
14Exact matchSeaham, United KingdomHQ recorded Oct 11, 202611-5030 contacts →

Exact match

“Based in the North East of England, Retroflo Ltd are an Electrical and Mechanical contractor whose main activities are focused in the water industry.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
15Exact matchNorwich, United KingdomHQ recorded Oct 11, 202651-20030 contacts →

Exact match

“Established in 1842, Panks supply, install, maintain, repair and service pumps and pump systems, including all ancillary equipment such as pipes, valves, fittings, controls etc.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
16Exact matchGloucester, United KingdomHQ recorded Oct 11, 202611-5029 contacts →

Exact match

“At WCSEE we collaborate closely with our clients to design and deliver reliable, robust, and future-proofed wastewater systems tailored to site specific requirements.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
17Exact matchBromsgrove, United KingdomHQ recorded Oct 11, 202651-20029 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 · Oct 11, 2026 · View company records in RevenueBase
18Exact matchSkipton, United KingdomHQ recorded Oct 11, 202611-5026 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 · Oct 11, 2026 · View company records in RevenueBase
19Exact matchWelwyn Garden City, United KingdomHQ recorded Oct 11, 202651-20026 contacts →

Exact match

“Water Treatment and Water Hygiene Services including: Consultancy, analytical, and monitoring.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
20Exact matchLuton, United KingdomHQ recorded Oct 11, 202651-20025 contacts →

Exact match

“M&S Water Services (Utilities) Limited has been trading since 1997 when the company was set up to bridge the gap between water companies and the customer that domestic plumbers…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
21Exact matchRickmansworth, United KingdomHQ recorded Oct 11, 202651-20023 contacts →

Exact match

“Smoothflow have been setting benchmark standards since our inception in 1992 and has grown into one of the most highly regarded providers of water treatment, commissioning &…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
22Exact matchCroydon, United KingdomHQ recorded Oct 11, 202611-5022 contacts →

Exact match

“Innovation is a privately owned company formed in 1998 and has successfully traded in the Building Services Sector of the Construction Industry since its inception.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
23Exact matchCastleford, United KingdomHQ recorded Oct 11, 202611-5022 contacts →

Exact match

“At Excel Water, we pride ourselves on our unwavering commitment to delivering exceptional water treatment and purification solutions tailored to the diverse needs of our clients.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Oct 11, 202611-5021 contacts →

Exact match

“Aquevo Limited, headquartered in North West London, is a leading provider of integrated water management services.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
25Exact matchWesthill, United KingdomHQ recorded Oct 11, 202611-5017 contacts →

Exact match

“Offshore Water Management Ltd (OWM) is a consultancy and services company delivering a complete range of solutions for the provision of safe drinking water to the offshore and…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase

Showing 25 of 221 drinking water system contractors based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,520 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Drinking water system contractors based in the United Kingdom at a glance

As of Oct 11, 2026
48.5%Verified-email coverage
14.2Average contacts per company
11-50Median size (employees)
5.9%Largest-city concentration · London
Oct 11, 2026Page data refreshed

Companies by employee count

1-10
102
11-50
82
51-200
26
201-500
4
501-1,000
2
1,001-5,000
3
10001+
1

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 221 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 “drinking water system contractors” 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 1,520 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 October 11, 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 “drinking water system contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many drinking water system contractors are there based in the United Kingdom?

RevenueBase identified 221 company matches for drinking water system contractors associated with the United Kingdom as of October 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?

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

Which city has the most drinking water system contractors?

London leads with 13 company records, followed by Colchester (4) and Coventry (4).

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 1,520 professional contacts with verified work emails tracked across these 221 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 October 11, 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.