Company lists · Data refreshed October 2026

Top 25 Power plant maintenance water treatment services based in the United Kingdom

Name: Power plant maintenance water treatment services based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 29, 2026 111 companies tracked

RevenueBase identified 111 company matches for power plant maintenance water treatment services associated with the United Kingdom as of October 2026 and tracks 2,453 professional contacts across them, including 363 with verified work emails. London is the largest hub.

This list covers company matches for power plant maintenance water treatment 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 October 29, 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 29, 2026 How this list was built

111Companies

2,453Contacts tracked

363Verified emails

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The 25 largest power plant maintenance water treatment services based in the United Kingdom

Ranked by team size

Top 25 of 111 company matches for power plant maintenance water treatment services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 29, 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	NCH Europe	Exact match	Wolverhampton, United KingdomHQ recorded Oct 29, 2026	10001+	466 contacts →
	Exact match “Industrial solutions since 1919 At NCH, we don’t just sell products-we deliver solutions that keep businesses moving.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
2	JBC	Exact match	Normanton, United KingdomHQ recorded Oct 29, 2026	51-200	91 contacts →
	Exact match “JBC Industrial Services is the leading name in Industrial Boiler and Burner service, maintenance, and repair.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
3	Feedwater Limited	Exact match	Moreton, United KingdomHQ recorded Oct 29, 2026	51-200	84 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
4	Siltbuster LTD	Exact match	Monmouth, United KingdomHQ recorded Oct 29, 2026	51-200	83 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 29, 2026 · View company records in RevenueBase
5	Deritend	Exact match	Wolverhampton, United KingdomHQ recorded Oct 29, 2026	51-200	51 contacts →
	Exact match “We are one of the UK’s fastest growing in and most dynamic maintenance services organisations, encompassing several specialist engineering operations within the group.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
6	Panton Mcleod	Exact match	Selkirk, United KingdomHQ recorded Oct 29, 2026	11-50	33 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 29, 2026 · View company records in RevenueBase
7	Reigate Environmental Services Limited	Exact match	Redhill, United KingdomHQ recorded Oct 29, 2026	11-50	32 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 29, 2026 · View company records in RevenueBase
8	JH Mechanical & Electrical	Exact match	Stockton-on-tees, United KingdomHQ recorded Oct 29, 2026	11-50	29 contacts →
	Exact match “JH Mechanical Services is a leading provider of mechanical, electrical and water management services across the North of England.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
9	Epsco LTD	Exact match	Perth, United KingdomHQ recorded Oct 29, 2026	11-50	28 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 · Oct 29, 2026 · View company records in RevenueBase
10	Te-Tech Process Solutions	Exact match	Southampton, United KingdomHQ recorded Oct 29, 2026	501-1,000	15 contacts →
	Exact match “Te-Tech Process Solutions Ltd has been established to provide a dedicated service to existing and new clients in the municipal water, industrial and commercial sectors.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
11	Aquatech Environmental Services Limited	Exact match	Wolverhampton, United KingdomHQ recorded Oct 29, 2026	11-50	14 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 · Oct 29, 2026 · View company records in RevenueBase
12	Kebble Environmental Services	Exact match	Harlow, United KingdomHQ recorded Oct 29, 2026	11-50	13 contacts →
	Exact match “We aim to be the most innovative, professional, Commissioning and Water Treatment service provider within the building services sector.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
13	FIN Maintenance LTD	Exact match	Belfast, United KingdomHQ recorded Oct 29, 2026	11-50	13 contacts →
	Exact match “FIN provides a single source of industrial maintenance and engineering services to clients throughout the water/wastewater, manufacturing, petrochem, food & drink and pharma…” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
14	Therma-Chem	Exact match	Glasgow, United KingdomHQ recorded Oct 29, 2026	11-50	12 contacts →
	Exact match “Therma-Chem specialise in the manufacture, production and application of unique, environmentally friendly, chemical technology products.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
15	Fulcom LTD	Exact match	Cardiff, United KingdomHQ recorded Oct 29, 2026	11-50	11 contacts →
	Exact match “Fulcom is a reputed and trusted provider of Commissioning & Water Treatment services to the Building Services industry.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
16	Spirotech UK	Exact match	Birmingham Business Park, United KingdomHQ recorded Oct 29, 2026	201-500	11 contacts →
	Exact match “Spirotech UK is a leading expert in system water quality, helping heating and cooling systems perform at their best across residential, commercial, and industrial environments.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
17	Chemical Treatment Services LTD	Exact match	Belfast, United KingdomHQ recorded Oct 29, 2026	11-50	10 contacts →
	Exact match “Chemical Treatment Services Ltd are a Belfast based water treatment company offering competitively priced chemicals and equipment with a prompt and efficient service.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
18	ONE Environmental LTD	Exact match	Witham, United KingdomHQ recorded Oct 29, 2026	11-50	9 contacts →
	Exact match “Water Treatment 🟡Commercial Gas 🟣Pumps 🟢Drainage 🟤Fabrics/Interiors HVAC 🟠M&E Services” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
19	A Spec Environmental LTD	Exact match	Camberley, United KingdomHQ recorded Oct 29, 2026	11-50	9 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 · Oct 29, 2026 · View company records in RevenueBase
20	Puretec Separations	Exact match	Ledbury, United KingdomHQ recorded Oct 29, 2026	11-50	8 contacts →
	Exact match “PureTec Separations is a leader in technologies and customer experience within the water treatment and product processing industries.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
21	Howlett Associates Water Treatment LTD	Exact match	Epsom, United KingdomHQ recorded Oct 29, 2026	11-50	8 contacts →
	Exact match “Howlett Associates offers a comprehensive range of services including; Legionella Risk Assessment and Legionella Compliance Tasks, Cooling Tower and Steam Boiler Water Treatment…” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
22	Myriad Service	Exact match	Melton Mowbray, United KingdomHQ recorded Oct 29, 2026	51-200	7 contacts →
	Exact match “PUT YOUR PLANTROOM IN SAFE HANDS Myriad Plantroom Services is proud to provide support to over 600 installations across the United Kingdom.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
23	Primary Water Group	Exact match	Cadishead Manchester, United KingdomHQ recorded Oct 29, 2026	11-50	6 contacts →
	Exact match “Established in 2006, Primary Water Group operates nationally from offices based in Manchester.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
24	Puretech Water Systems UK LTD	Exact match	Tonbridge, United KingdomHQ recorded Oct 29, 2026	1-10	6 contacts →
	Exact match “Puretech Water Systems (UK) Ltd is a specialist independent Water Treatment plant installation and service provider.” Recorded in the RevenueBase company graph · Oct 29, 2026 · View company records in RevenueBase
25	Siren Water Treatment	Exact match	Rotherham, United KingdomHQ recorded Oct 29, 2026	1-10	5 contacts →
	Exact match “Get in touch - info@sirenwatertreatment.co.uk / 0800 772 3227 Every client is unique and so are we.” Recorded in the RevenueBase company graph · Oct 29, 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 “power plant maintenance water treatment 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 111 power plant maintenance water treatment services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 363 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Power plant maintenance water treatment services based in the United Kingdom at a glance

As of Oct 29, 2026

14.8%Verified-email coverage

22.1Average contacts per company

1-10Median size (employees)

4.5%Largest-city concentration · London

Oct 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 111 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 “power plant maintenance water treatment 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 363 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 29, 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 “power plant maintenance water treatment services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many power plant maintenance water treatment services are there based in the United Kingdom?

RevenueBase identified 111 company matches for power plant maintenance water treatment services 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?

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

Which city has the most power plant maintenance water treatment services?

London leads with 5 company records, followed by Wolverhampton (5) and Belfast (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 363 professional contacts with verified work emails tracked across these 111 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 29, 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.