Company lists · Data refreshed November 2026

Top 25 Water purification system installers based in the United Kingdom

RevenueBase identified 193 company matches for water purification system installers associated with the United Kingdom as of November 2026 and tracks 2,621 professional contacts across them, including 807 with verified work emails. London is the largest hub.

This list covers company matches for water purification system installers 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
193Companies
2,621Contacts tracked
807Verified emails
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The 25 largest water purification system installers based in the United Kingdom

Ranked by team size
Top 25 of 193 company matches for water purification system installers 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 matchDereham, United KingdomHQ recorded Nov 6, 2026501-1,000258 contacts →

Exact match

“Culligan UK delivers innovative, high-quality water solutions to homes and businesses across the United Kingdom.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchNewry, United KingdomHQ recorded Nov 6, 202651-20091 contacts →

Exact match

“HBE is a well respected provider of compliance services on local basis, assisting building & facilities managers in providing a safe and healthy built environment for employees…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMonmouth, United KingdomHQ recorded Nov 6, 202651-20087 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 · Nov 6, 2026 · View company records in RevenueBase
4Exact matchRochdale, United KingdomHQ recorded Nov 6, 202651-20086 contacts →

Exact match

“Salt Separation Services Limited is an independent water treatment company specialising in the design, manufacture, installation and commissioning of water treatment systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchAlfreton, United KingdomHQ recorded Nov 6, 2026201-50084 contacts →

Exact match

“Envirogen Group is a global leader in industrial water treatment and process filtration solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMaidstone, United KingdomHQ recorded Nov 6, 202651-20057 contacts →

Exact match

“In short, we’re 'easy to deal with'.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchFarnborough, United KingdomHQ recorded Nov 6, 202651-20047 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 · Nov 6, 2026 · View company records in RevenueBase
8Exact matchWolverhampton, United KingdomHQ recorded Nov 6, 202651-20042 contacts →

Exact match

“At Billi, we design and manufacture a range of energy efficient filtered water systems that offer our customers the very best in innovation, superior performance and reliability.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBasildon, United KingdomHQ recorded Nov 6, 202651-20042 contacts →

Exact match

“Guardian part of Marlowe Environmental Services, delivers a range of water treatment and air quality services, allowing the systems that rely on these elements to work effectively…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchRedhill, United KingdomHQ recorded Nov 6, 202611-5034 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 · Nov 6, 2026 · View company records in RevenueBase
11Exact 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
12Exact matchColchester, United KingdomHQ recorded Nov 6, 202651-20031 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 · Nov 6, 2026 · View company records in RevenueBase
13Exact matchPerth, United KingdomHQ recorded Nov 6, 202611-5029 contacts →

Exact match

“EPSCO delivers the highest standards in water system cleanliness and performance, specialising in Offshore and Marine potable water, Industrial Cooling and Water Utilities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchCastleford, United KingdomHQ recorded Nov 6, 202611-5024 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 · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBicester, United KingdomHQ recorded Nov 6, 202611-5022 contacts →

Exact match

“Our core team have numerous years experience in the field of commercial water treatment and a proven track record of delivering effective, compliant water treatments packages.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchRoyal Wootton Bassett, United KingdomHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“Trident Water Solutions are a privately owned, independent company that prides itself on sector-leading levels, with a high quality service at a great value to the water…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBuckinghamshire, United KingdomHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Your water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBournemouth, United KingdomHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Aquacare is a water management specialist and part of South West Water, whose parent company is Pennon Group plc who have assets of around £5.9 billion and a workforce of around…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchHartlepool, United KingdomHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“HydroChem Group is the longest-serving independent water treatment specialist in the North of England.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchWoking, United KingdomHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“At PureH2O Ltd we put environmental sustainability at the heart of everything we do.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAlton, United KingdomHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“Plantwork Systems Ltd (PWS) provides water and wastewater treatment solutions with a strong focus on sustainability, innovation and cost efficiency.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchClydebank, United KingdomHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“WaterWise Utilities Ltd is an LRQA-accredited utility infrastructure contractor delivering high-quality water, electrical and traffic management solutions across Scotland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchWolverhampton, United KingdomHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“Industry Leader In Legionella Control & Water Treatment Water Treatment Services Aquatech water treatment services cover all stages of water treatment from pretreatment through to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchCamberley, United KingdomHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Our expertise spans the full spectrum of water treatment, including adherence to BSRIA codes and the application of CPC Filtration methodology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchWolverhampton, United KingdomHQ recorded Nov 6, 20261,001-5,00013 contacts →

Exact match

“Water treatment is an important part of preventative maintenance programmes for boiler, cooling and process water systems.”

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

Showing 25 of 193 water purification system installers based in the United Kingdom

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Water purification system installers based in the United Kingdom at a glance

As of Nov 6, 2026
30.8%Verified-email coverage
13.6Average contacts per company
1-10Median size (employees)
3.6%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
96
11-50
61
51-200
18
201-500
4
501-1,000
5
1,001-5,000
1
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 193 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 purification system installers” 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 807 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 purification system installers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many water purification system installers are there based in the United Kingdom?

RevenueBase identified 193 company matches for water purification system installers 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?

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

Which city has the most water purification system installers?

London leads with 7 company records, followed by Bristol (4) and Colchester (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 807 professional contacts with verified work emails tracked across these 193 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.