Company lists · Data refreshed September 2026

Top 25 Drinking water quality services based in the United Kingdom

Name: Drinking water quality services based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 87 companies tracked

RevenueBase identified 87 company matches for drinking water quality services associated with the United Kingdom as of September 2026 and tracks 1,685 professional contacts across them, including 868 with verified work emails. London is the largest hub.

This list covers company matches for drinking water quality services 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built

87Companies

1,685Contacts tracked

868Verified emails

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The 25 largest drinking water quality services based in the United Kingdom

Ranked by team size

Top 25 of 87 company matches for drinking water quality services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Affinity Water	Exact match	Hatfield, United KingdomHQ recorded Sep 19, 2026	1,001-5,000	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
2	Alpha Scientific	Exact match	Slough, United KingdomHQ recorded Sep 19, 2026	11-50	62 contacts →
	Exact match “At Alpha Scientific, we perform microbiological and chemical water testing for a wide range of water types including hot and cold water services, cooling towers, air conditioning…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	Guardian Water Treatment Marlowe Environmental Services	Exact match	Basildon, United KingdomHQ recorded Sep 19, 2026	51-200	50 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 · Sep 19, 2026 · View company records in RevenueBase
4	PH Water Part Of Complii	Exact match	Farnborough, United KingdomHQ recorded Sep 19, 2026	51-200	50 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 · Sep 19, 2026 · View company records in RevenueBase
5	Watertight Management	Exact match	Bromsgrove, United KingdomHQ recorded Sep 19, 2026	51-200	31 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 · Sep 19, 2026 · View company records in RevenueBase
6	Reigate Environmental Services Limited	Exact match	Redhill, United KingdomHQ recorded Sep 19, 2026	11-50	31 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 · Sep 19, 2026 · View company records in RevenueBase
7	Pennon Water Services	Exact match	Bournemouth, United KingdomHQ recorded Sep 19, 2026	51-200	31 contacts →
	Exact match “Pennon Water Services (PWS) provides B2B water and wastewater retail services to business accounts across England and Scotland.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	GES Water	Exact match	Aylesbury, United KingdomHQ recorded Sep 19, 2026	11-50	30 contacts →
	Exact match “Since 1990 we have provided our clients with leading edge solutions to legionella management.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Proeconomy	Exact match	Milton Keynes, United KingdomHQ recorded Sep 19, 2026	11-50	24 contacts →
	Exact match “ProEconomy offer 360 degree Water Hygiene services and products across the UK and worldwide.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	Excel Water LTD	Exact match	Castleford, United KingdomHQ recorded Sep 19, 2026	11-50	21 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 · Sep 19, 2026 · View company records in RevenueBase
11	Aquatrust	Exact match	Bradford, United KingdomHQ recorded Sep 19, 2026	11-50	20 contacts →
	Exact match “Aquatrust is a trusted water hygiene partner helping organisations protect people, manage risk, and stay compliant.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	Hydrocert	Exact match	Welwyn Garden City, United KingdomHQ recorded Sep 19, 2026	51-200	20 contacts →
	Exact match “Water Treatment and Water Hygiene Services including: Consultancy, analytical, and monitoring.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Dynamika	Exact match	Southampton, United KingdomHQ recorded Sep 19, 2026	1-10	20 contacts →
	Exact match “Dynamika is an established water treatment and environmental consultancy which provide services to the industrial, commercial, leisure and healthcare sectors throughout the UK.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	Aquacare	Exact match	Bournemouth, United KingdomHQ recorded Sep 19, 2026	11-50	17 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 · Sep 19, 2026 · View company records in RevenueBase
15	Trident Water Solutions Limited	Exact match	Royal Wootton Bassett, United KingdomHQ recorded Sep 19, 2026	11-50	15 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 · Sep 19, 2026 · View company records in RevenueBase
16	WCI Group LTD	Exact match	Taunton, United KingdomHQ recorded Sep 19, 2026	11-50	14 contacts →
	Exact match “WCI Group Ltd is the leading expert in water and wastewater engineering, delivering innovative solutions with over four decades of expertise.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	ADI Environmental	Exact match	Kings Norton, United KingdomHQ recorded Sep 19, 2026	11-50	13 contacts →
	Exact match “adi Environmental is dynamic and flexible, providing consultative solutions to UK based blue chip organisations within the Pharmaceutical, Food & Manufacturing sectors as well as…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Broadwater Technologies LTD	Exact match	Bristol, United KingdomHQ recorded Sep 19, 2026	11-50	12 contacts →
	Exact match “Broadwater Technologies are an established Water Quality Specialist company operating throughout the UK incorporating a synergy of expertise and knowledge.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	Hydrochem Group	Exact match	Hartlepool, United KingdomHQ recorded Sep 19, 2026	11-50	11 contacts →
	Exact match “HydroChem Group is the longest-serving independent water treatment specialist in the North of England.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	Envirocloud LTD	Exact match	Chester, United KingdomHQ recorded Sep 19, 2026	1-10	10 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	Aqualogic LTD	Exact match	Leatherhead, United KingdomHQ recorded Sep 19, 2026	11-50	10 contacts →
	Exact match “Aqualogic have been protecting water quality and flow through pumps, tanks, and cylinders since 2002.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	Aqua Allies LTD	Exact match	Peterborough, United KingdomHQ recorded Sep 19, 2026	11-50	8 contacts →
	Exact match “Water Services for retail, industrial & healthcare facilities” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	A Spec Environmental LTD	Exact match	Camberley, United KingdomHQ recorded Sep 19, 2026	11-50	8 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 · Sep 19, 2026 · View company records in RevenueBase
24	LIA International	Exact match	Newbury, United KingdomHQ recorded Sep 19, 2026	1-10	7 contacts →
	Exact match “LIA International collaborates with partners supplying high quality water testing equipment and consumables.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	Atom Water Treatment LTD	Exact match	Colchester, United KingdomHQ recorded Sep 19, 2026	11-50	6 contacts →
	Exact match “Atom Water Treatment Ltd - With over 30 years experience we help and support a various range of businesses including Property Management companies to M&E companies each utilising…” 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 “drinking water quality services”. 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 87 drinking water quality services based in the United Kingdom

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Drinking water quality services based in the United Kingdom at a glance

As of Sep 19, 2026

51.5%Verified-email coverage

19.4Average contacts per company

11-50Median size (employees)

4.6%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

1,001-5,000

10001+

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 87 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 quality services” 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 868 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 “drinking water quality services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many drinking water quality services are there based in the United Kingdom?

RevenueBase identified 87 company matches for drinking water quality services 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?

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

Which city has the most drinking water quality services?

London leads with 4 company records, followed by Hatfield (3) and Basildon (2).

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 868 professional contacts with verified work emails tracked across these 87 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.

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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.