Company lists · Data refreshed September 2026

Top 25 Water treatment equipment repair companies based in the United Kingdom

Name: Water treatment equipment repair companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 212 companies tracked

RevenueBase identified 212 water treatment equipment repair companies headquartered in the United Kingdom as of September 2026 and tracks 3,573 professional contacts across them, including 1,463 with verified work emails. London is the largest hub.

This list covers water treatment equipment repair companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

212Companies

3,573Contacts tracked

1,463Verified emails

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The 25 largest water treatment equipment repair companies based in the United Kingdom

Ranked by team size

Top 25 of 212 water treatment equipment repair companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to water treatment equipment repair companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	RSE	Partial evidence	Inverness Highlands, United KingdomHQ checked Sep 22, 2026	501-1,000	498 contacts →
	Partial evidence “RSE is a trusted clean water technology company, developing market leading products and solutions for purifying drinking water, recycling wastewater and cleaning water in…” Source: RevenueBase Database · checked Sep 22, 2026
2	NCH Europe	Indirect evidence	Wolverhampton, United KingdomHQ checked Sep 22, 2026	10001+	453 contacts →
	Indirect evidence “Industrial solutions since 1919 At NCH, we don’t just sell products-we deliver solutions that keep businesses moving.” Source: RevenueBase Database · checked Sep 22, 2026
3	Culligan UK	Partial evidence	Dereham, United KingdomHQ checked Sep 22, 2026	501-1,000	231 contacts →
	Partial evidence “Culligan UK delivers innovative, high-quality water solutions to homes and businesses across the United Kingdom.” Source: RevenueBase Database · checked Sep 22, 2026
4	Severn Trent Services	Indirect evidence	Coventry, United KingdomHQ checked Sep 22, 2026	1,001-5,000	137 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026
5	Salt Separation Services Limited	Strong evidence	Rochdale, United KingdomHQ checked Sep 22, 2026	51-200	80 contacts →
	Strong evidence “Salt Separation Services Limited is an independent water treatment company specialising in the design, manufacture, installation and commissioning of water treatment systems.” Source: RevenueBase Database · checked Sep 22, 2026
6	Feedwater Limited	Strong evidence	Moreton, United KingdomHQ checked Sep 22, 2026	51-200	79 contacts →
	Strong evidence “Feedwater Ltd is a UK Water Treatment Company, established in 1976 specifically to supply products and services for the treatment of water for steam boilers, cooling towers…” Source: RevenueBase Database · checked Sep 22, 2026
7	Siltbuster LTD	Strong evidence	Monmouth, United KingdomHQ checked Sep 22, 2026	51-200	75 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 22, 2026
8	Richard Alan	Indirect evidence	Dewsbury, United KingdomHQ checked Sep 22, 2026	51-200	74 contacts →
	Indirect evidence “Established in 1970, the West Yorkshire-based Richard Alan Group is a portfolio of businesses providing high-quality Engineering Design, Manufacture, Installation and Servicing to…” Source: RevenueBase Database · checked Sep 22, 2026
9	Jacopa Limited	Indirect evidence	West Bromwich, United KingdomHQ checked Sep 22, 2026	51-200	73 contacts →
	Indirect evidence “Many of the best known, most respected and reliable brand names in the wastewater industry are part of Jacopa's heritage.” Source: RevenueBase Database · checked Sep 22, 2026
10	MKE Engineering Group	Indirect evidence	Sittingbourne, United KingdomHQ checked Sep 22, 2026	51-200	63 contacts →
	Indirect evidence “MKE Engineering (Mid Kent Electrical) is the largest independent engineering service provider of its kind in the South East, operating from 3 different sites covering Kent…” Source: RevenueBase Database · checked Sep 22, 2026
11	Deritend	Indirect evidence	Wolverhampton, United KingdomHQ checked Sep 22, 2026	51-200	58 contacts →
	Indirect evidence “We are one of the UK’s fastest growing in and most dynamic maintenance services organisations, encompassing several specialist engineering operations within the group.” Source: RevenueBase Database · checked Sep 22, 2026
12	T-T Pumps LTD	Indirect evidence	Woore, United KingdomHQ checked Sep 22, 2026	51-200	49 contacts →
	Indirect evidence “Established in 1959, T-T started out as a general engineering company before growing to consist of 6 divisions – T-T Pumps, T-T Controls and Automation, T-T Flow Valves, T-T…” Source: RevenueBase Database · checked Sep 22, 2026
13	Hydro International UK Wastewater Services	Partial evidence	Portland, United KingdomHQ checked Sep 22, 2026	201-500	45 contacts →
	Partial evidence “Hydro International, a CRH Company, provides advanced products, services and expertise to help municipal, industrial and construction customers to improve their water management…” Source: RevenueBase Database · checked Sep 22, 2026
14	Water Treatment Products LTD	Strong evidence	Blaenavon, United KingdomHQ checked Sep 22, 2026	51-200	40 contacts →
	Strong evidence “Water Treatment Products Ltd, established in formulate and manufacture speciality chemicals for a wide range of water treatment companies and applications.” Source: RevenueBase Database · checked Sep 22, 2026
15	Panton Mcleod	Strong evidence	Selkirk, United KingdomHQ checked Sep 22, 2026	11-50	35 contacts →
	Strong evidence “Our teams are dedicated to supporting our clients to protect, maintain and improve water quality within treatment and distribution systems.” Source: RevenueBase Database · checked Sep 22, 2026
16	Arvia Technology	Strong evidence	Runcorn, United KingdomHQ checked Sep 22, 2026	11-50	32 contacts →
	Strong evidence “Tertiary water treatment specialist.” Source: RevenueBase Database · checked Sep 22, 2026
17	Panks Engineers LTD	Strong evidence	Norwich, United KingdomHQ checked Sep 22, 2026	51-200	31 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 22, 2026
18	Reigate Environmental Services Limited	Strong evidence	Redhill, United KingdomHQ checked Sep 22, 2026	11-50	31 contacts →
	Strong evidence “Reigate Environmental Services Limited is a Water Treatment and Maintenance company based at 42 Ormside Way, Holmethorpe Industrial Estate, Redhill, Surrey, United Kingdom.” Source: RevenueBase Database · checked Sep 22, 2026
19	Epsco LTD	Partial evidence	Perth, United KingdomHQ checked Sep 22, 2026	11-50	29 contacts →
	Partial evidence “EPSCO delivers the highest standards in water system cleanliness and performance, specialising in Offshore and Marine potable water, Industrial Cooling and Water Utilities.” Source: RevenueBase Database · checked Sep 22, 2026
20	Lubron UK	Strong evidence	Colchester, United KingdomHQ checked Sep 22, 2026	51-200	26 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 22, 2026
21	TWC Total Water Care	Strong evidence	Bicester, United KingdomHQ checked Sep 22, 2026	11-50	22 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 22, 2026
22	Acwa Services Limited	Strong evidence	Skipton, United KingdomHQ checked Sep 22, 2026	11-50	22 contacts →
	Strong evidence “ACWA Services Limited is a Municipal and Industrial Water and Wastewater Treatment company located in Skipton, United Kingdom.” Source: RevenueBase Database · checked Sep 22, 2026
23	Multiplex Engineering Limited	Partial evidence	Chesterfield, United KingdomHQ checked Sep 22, 2026	11-50	22 contacts →
	Partial evidence “Multiplex have over 3 decades of experience within UK Industry, specialising in providing aftermarket service and repair solutions.” Source: RevenueBase Database · checked Sep 22, 2026
24	KEE	Partial evidence	Aylesbury, United KingdomHQ checked Sep 22, 2026	51-200	21 contacts →
	Partial evidence “KEE KEE is a globally recognised brand operating within in the industrial, commercial and domestic wastewater treatment industries.” Source: RevenueBase Database · checked Sep 22, 2026
25	Excel Water LTD	Strong evidence	Castleford, United KingdomHQ checked Sep 22, 2026	11-50	21 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 22, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: water treatment equipment repair companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names water treatment equipment repair companies.
Partial evidence: Its own public description names part of water treatment equipment repair companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water treatment equipment repair companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 212 water treatment equipment repair companies based in the United Kingdom

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Water treatment equipment repair companies based in the United Kingdom at a glance

As of Sep 22, 2026

40.9%Verified-email coverage

16.9Average contacts per company

11-50Median size (employees)

3.3%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 212 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among water treatment equipment repair companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “water treatment equipment repair companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names water treatment equipment repair companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among water treatment equipment repair companies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,463 across the full list. 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 22, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names water treatment equipment repair companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many water treatment equipment repair companies are there based in the United Kingdom?

RevenueBase identified 212 water treatment equipment repair companies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

RSE, headquartered in Inverness Highlands, tops this list with the largest team on record.

Which city has the most water treatment equipment repair companies?

London leads with 7 headquartered companies, followed by Belfast (3) and Chesterfield (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,463 verified decision-maker contacts tracked across these 212 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 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 Smart Search, 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.