Company lists · Data refreshed September 2026
Top 25 Water treatment plant contractors based in the United Kingdom
RevenueBase identified 211 company matches for water treatment plant contractors associated with the United Kingdom as of September 2026 and tracks 4,383 professional contacts across them, including 2,062 with verified work emails. London is the largest hub.
This list covers company matches for water treatment plant 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 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.
The 25 largest water treatment plant contractors based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 879 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 · Sep 19, 2026 · View company records in RevenueBase | |||||
| 2 | 498 contacts → | ||||
Exact match “RSE is a trusted clean water technology company, developing market leading products and solutions for purifying drinking water, recycling wastewater and cleaning water in…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 3 | 178 contacts → | ||||
Exact match “Biwater is a world leader in treated water, providing large-scale water and wastewater solutions for clients across the world.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 4 | 137 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 · Sep 19, 2026 · View company records in RevenueBase | |||||
| 5 | 113 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 · Sep 19, 2026 · View company records in RevenueBase | |||||
| 6 | 79 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 · Sep 19, 2026 · View company records in RevenueBase | |||||
| 7 | 76 contacts → | ||||
Exact match “At Nijhuis Saur Industries UK & Ireland our aim is to help our customers realise the value of their water and wastewater.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 8 | 75 contacts → | ||||
Exact match “Envirogen Group is a global leader in industrial water treatment and process filtration solutions.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 9 | 75 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 · Sep 19, 2026 · View company records in RevenueBase | |||||
| 10 | 74 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 11 | 73 contacts → | ||||
Exact match “Many of the best known, most respected and reliable brand names in the wastewater industry are part of Jacopa's heritage.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 12 | 70 contacts → | ||||
Exact match “Welcome to Gel Engineering.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 13 | 58 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 · Sep 19, 2026 · View company records in RevenueBase | |||||
| 14 | 50 contacts → | ||||
Exact match “Hydrotec is the UK’s leading company in the design and manufacture of water treatment products for the building services industry.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 15 | 46 contacts → | ||||
Exact match “Colloide Engineering Systems are a process engineering company, delivering tailored solutions for clients across many industries including Water and Wastewater, Food & Drink…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 16 | 45 contacts → | ||||
Exact match “Hydro International, a CRH Company, provides advanced products, services and expertise to help municipal, industrial and construction customers to improve their water management…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 17 | 35 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 · Sep 19, 2026 · View company records in RevenueBase | |||||
| 18 | 33 contacts → | ||||
Exact match “Marsh Industries delivers world-class water/wastewater treatment products and solutions to the domestic, commercial, agricultural and leisure sectors from its UK manufacturing…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 19 | 32 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 · Sep 19, 2026 · View company records in RevenueBase | |||||
| 20 | 32 contacts → | ||||
Exact match “Tertiary water treatment specialist.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 21 | 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 | |||||
| 22 | 29 contacts → | ||||
Exact match “rhames are innovators within the Manufacturing & Engineering Services sector specialising in Pharmaceutical, Petrochemical and Utilities industries with key representations within…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 23 | 26 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 · Sep 19, 2026 · View company records in RevenueBase | |||||
| 24 | 25 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 · Sep 19, 2026 · View company records in RevenueBase | |||||
| 25 | 23 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 · 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 “water treatment plant contractors”. 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 211 water treatment plant contractors based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 2,062 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Water treatment plant contractors based in the United Kingdom at a glance
As of Sep 19, 2026Companies by employee count
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 211 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 treatment plant 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 2,062 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 “water treatment plant contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many water treatment plant contractors are there based in the United Kingdom?
RevenueBase identified 211 company matches for water treatment plant contractors 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?
MWH Treatment tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most water treatment plant contractors?
London leads with 7 company records, followed by Coventry (4) and Manchester (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 2,062 professional contacts with verified work emails tracked across these 211 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.
Ready to reach these companies? Verified emails and direct dials for all 211 water treatment plant contractors based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Water treatment plant contractors by geography
- Water treatment plant contractors based in Ahmedabad, India
- Water treatment plant contractors based in Chennai, India
- Water treatment plant contractors based in Mumbai, India
- Water treatment plant contractors based in Pune, India
- Water treatment plant contractors based in Argentina
- Water treatment plant contractors based in Australia
- Water treatment plant contractors based in Austria
- Water treatment plant contractors based in Belgium
- Water treatment plant contractors based in Brazil
- Water treatment plant contractors based in Canada
- Water treatment plant contractors based in Chile
- Water treatment plant contractors based in Colombia
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Water treatment plant contractors based in Ahmedabad, India
- Water treatment plant contractors based in Chennai, India
- Water treatment plant contractors based in Mumbai, India
- Water treatment plant contractors based in Pune, India
- Water treatment plant contractors based in Argentina
- Water treatment plant contractors based in Australia
Company intelligence · public preview
Top 25 water treatment plant contractors based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 211 matching company records for water treatment plant contractors based in the United Kingdom, with 4,383 tracked contacts and 2,062 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 19, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 water treatment plant contractors based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | MWH Treatmentmwhtreatment.com HQ: Stockport, United KingdomReported employees: 1,001-5,000 | Stockport, United Kingdom | 1,001-5,000 | Exact match | 879 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | RSEross-eng.com HQ: Inverness Highlands, United KingdomReported employees: 501-1,000 | Inverness Highlands, United Kingdom | 501-1,000 | Exact match | 498 contacts → |
“RSE is a trusted clean water technology company, developing market leading products and solutions for purifying drinking water, recycling wastewater and cleaning water in…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Biwaterbiwater.comHQ: Surrey, United KingdomReported employees: 501-1,000 | Surrey, United Kingdom | 501-1,000 | Exact match | 178 contacts → |
“Biwater is a world leader in treated water, providing large-scale water and wastewater solutions for clients across the world.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Severn Trent Servicesstservices.co.ukHQ: Coventry, United KingdomReported employees: 1,001-5,000 | Coventry, United Kingdom | 1,001-5,000 | Exact match | 137 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Enpureenpure.co.ukHQ: Birmingham, United KingdomReported employees: 51-200 | Birmingham, United Kingdom | 51-200 | Exact match | 113 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Feedwater Limitedfeedwater.co.ukHQ: Moreton, United KingdomReported employees: 51-200 | Moreton, United Kingdom | 51-200 | Exact match | 79 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Nijhuis Saur Industries UK And Irelandnijhuisindustries.comHQ: United Kingdom & Ireland, United KingdomReported employees: 201-500 | United Kingdom & Ireland, United Kingdom | 201-500 | Exact match | 76 contacts → |
“At Nijhuis Saur Industries UK & Ireland our aim is to help our customers realise the value of their water and wastewater.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Envirogen Groupenvirogengroup.comHQ: Alfreton, United KingdomReported employees: 201-500 | Alfreton, United Kingdom | 201-500 | Exact match | 75 contacts → |
“Envirogen Group is a global leader in industrial water treatment and process filtration solutions.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Siltbuster LTDworkdry.comHQ: Monmouth, United KingdomReported employees: 51-200 | Monmouth, United Kingdom | 51-200 | Exact match | 75 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Richard Alanrichardalan.co.ukHQ: Dewsbury, United KingdomReported employees: 51-200 | Dewsbury, United Kingdom | 51-200 | Exact match | 74 contacts → |
“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…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Jacopa Limitedjacopa.comHQ: West Bromwich, United KingdomReported employees: 51-200 | West Bromwich, United Kingdom | 51-200 | Exact match | 73 contacts → |
“Many of the best known, most respected and reliable brand names in the wastewater industry are part of Jacopa's heritage.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | GEL Engineeringgelengineering.co.uk HQ: Enfield, United KingdomReported employees: 51-200 | Enfield, United Kingdom | 51-200 | Exact match | 70 contacts → |
“Welcome to Gel Engineering.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  ESD Joint Ventureesd.scotHQ: Stepps, United KingdomReported employees: 201-500 | Stepps, United Kingdom | 201-500 | Exact match | 58 contacts → |
“How we manage water and wastewater systems now will be critical for our communities and ecosystems for many generations to come.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Hydrotec Water Treatment Specialistshydrotec.co.ukHQ: High Wycombe, United KingdomReported employees: 51-200 | High Wycombe, United Kingdom | 51-200 | Exact match | 50 contacts → |
“Hydrotec is the UK’s leading company in the design and manufacture of water treatment products for the building services industry.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Colloidecolloide.com HQ: Tyrone, United KingdomReported employees: 51-200 | Tyrone, United Kingdom | 51-200 | Exact match | 46 contacts → |
“Colloide Engineering Systems are a process engineering company, delivering tailored solutions for clients across many industries including Water and Wastewater, Food & Drink…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Hydro International UK Wastewater Serviceshydro-int.comHQ: Portland, United KingdomReported employees: 201-500 | Portland, United Kingdom | 201-500 | Exact match | 45 contacts → |
“Hydro International, a CRH Company, provides advanced products, services and expertise to help municipal, industrial and construction customers to improve their water management…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Panton Mcleodpantonmcleod.co.ukHQ: Selkirk, United KingdomReported employees: 11-50 | Selkirk, United Kingdom | 11-50 | Exact match | 35 contacts → |
“Our teams are dedicated to supporting our clients to protect, maintain and improve water quality within treatment and distribution systems.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Marsh Industries LTDmarshindustries.co.uk HQ: Northamptonshire, United KingdomReported employees: 51-200 | Northamptonshire, United Kingdom | 51-200 | Exact match | 33 contacts → |
“Marsh Industries delivers world-class water/wastewater treatment products and solutions to the domestic, commercial, agricultural and leisure sectors from its UK manufacturing…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Wcsee Wastewater Marlowe Environmental Serviceswcs-group.co.ukHQ: Gloucester, United KingdomReported employees: 11-50 | Gloucester, United Kingdom | 11-50 | Exact match | 32 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Arvia Technologyarviatechnology.comHQ: Runcorn, United KingdomReported employees: 11-50 | Runcorn, United Kingdom | 11-50 | Exact match | 32 contacts → |
“Tertiary water treatment specialist.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Watertight Managementwatertightmanagement.comHQ: Bromsgrove, United KingdomReported employees: 51-200 | Bromsgrove, United Kingdom | 51-200 | Exact match | 31 contacts → |
“Watertight Management has established itself as a leader in the provision of Clean and Waste water management services.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Rhamesrhames.ukHQ: Nottingham, United KingdomReported employees: 51-200 | Nottingham, United Kingdom | 51-200 | Exact match | 29 contacts → |
“rhames are innovators within the Manufacturing & Engineering Services sector specialising in Pharmaceutical, Petrochemical and Utilities industries with key representations within…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Lubron UKlubron.co.uk HQ: Colchester, United KingdomReported employees: 51-200 | Colchester, United Kingdom | 51-200 | Exact match | 26 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Retrofloretroflo.com HQ: Seaham, United KingdomReported employees: 11-50 | Seaham, United Kingdom | 11-50 | Exact match | 25 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Smoothflow Water Treatment & Commissioningsmoothflow.co.uk HQ: Rickmansworth, United KingdomReported employees: 51-200 | Rickmansworth, United Kingdom | 51-200 | Exact match | 23 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 211 company matches
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Water treatment plant contractors: dataset insights
September 19, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
208 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 211 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 19, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for water treatment plant contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many water treatment plant contractors did RevenueBase find based in the United Kingdom?
The saved snapshot records 211 matching company records, 4,383 tracked contacts and 2,062 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 19, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Water treatment plant contractors by geography
- Water treatment plant contractors based in Ahmedabad, India
- Water treatment plant contractors based in Chennai, India
- Water treatment plant contractors based in Mumbai, India
- Water treatment plant contractors based in Pune, India
- Water treatment plant contractors based in Argentina
- Water treatment plant contractors based in Australia
- Water treatment plant contractors based in Austria
- Water treatment plant contractors based in Belgium
- Water treatment plant contractors based in Brazil
- Water treatment plant contractors based in Canada
- Water treatment plant contractors based in Chile
- Water treatment plant contractors based in Colombia
Cite this list
RevenueBase Data Team. Top 25 water treatment plant contractors based in the United Kingdom. Snapshot: September 19, 2026. https://revenuebase.ai/companies/water-treatment-plant-contractors/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Water treatment plant contractors based in Ahmedabad, India
- Water treatment plant contractors based in Chennai, India
- Water treatment plant contractors based in Mumbai, India
- Water treatment plant contractors based in Pune, India
- Water treatment plant contractors based in Argentina
- Water treatment plant contractors based in Australia
Company intelligence · public preview
Top 25 water treatment plant contractors based in the United Kingdom
RevenueBase records 211 matching company records for water treatment plant contractors based in the United Kingdom, with 4,383 tracked contacts and 2,062 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 19, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 water treatment plant contractors based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | MWH Treatmentmwhtreatment.com HQ: Stockport, United KingdomReported employees: 1,001-5,000 | Stockport, United Kingdom | 1,001-5,000 | Exact match | 879 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | RSEross-eng.com HQ: Inverness Highlands, United KingdomReported employees: 501-1,000 | Inverness Highlands, United Kingdom | 501-1,000 | Exact match | 498 contacts → |
“RSE is a trusted clean water technology company, developing market leading products and solutions for purifying drinking water, recycling wastewater and cleaning water in…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Biwaterbiwater.com HQ: Surrey, United KingdomReported employees: 501-1,000 | Surrey, United Kingdom | 501-1,000 | Exact match | 178 contacts → |
“Biwater is a world leader in treated water, providing large-scale water and wastewater solutions for clients across the world.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Severn Trent Servicesstservices.co.uk HQ: Coventry, United KingdomReported employees: 1,001-5,000 | Coventry, United Kingdom | 1,001-5,000 | Exact match | 137 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Enpureenpure.co.uk HQ: Birmingham, United KingdomReported employees: 51-200 | Birmingham, United Kingdom | 51-200 | Exact match | 113 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Feedwater Limitedfeedwater.co.uk HQ: Moreton, United KingdomReported employees: 51-200 | Moreton, United Kingdom | 51-200 | Exact match | 79 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Nijhuis Saur Industries UK And Irelandnijhuisindustries.com HQ: United Kingdom & Ireland, United KingdomReported employees: 201-500 | United Kingdom & Ireland, United Kingdom | 201-500 | Exact match | 76 contacts → |
“At Nijhuis Saur Industries UK & Ireland our aim is to help our customers realise the value of their water and wastewater.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Envirogen Groupenvirogengroup.com HQ: Alfreton, United KingdomReported employees: 201-500 | Alfreton, United Kingdom | 201-500 | Exact match | 75 contacts → |
“Envirogen Group is a global leader in industrial water treatment and process filtration solutions.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Siltbuster LTDworkdry.com HQ: Monmouth, United KingdomReported employees: 51-200 | Monmouth, United Kingdom | 51-200 | Exact match | 75 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Richard Alanrichardalan.co.uk HQ: Dewsbury, United KingdomReported employees: 51-200 | Dewsbury, United Kingdom | 51-200 | Exact match | 74 contacts → |
“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…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Jacopa Limitedjacopa.com HQ: West Bromwich, United KingdomReported employees: 51-200 | West Bromwich, United Kingdom | 51-200 | Exact match | 73 contacts → |
“Many of the best known, most respected and reliable brand names in the wastewater industry are part of Jacopa's heritage.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | GEL Engineeringgelengineering.co.uk HQ: Enfield, United KingdomReported employees: 51-200 | Enfield, United Kingdom | 51-200 | Exact match | 70 contacts → |
“Welcome to Gel Engineering.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | ESD Joint Ventureesd.scot HQ: Stepps, United KingdomReported employees: 201-500 | Stepps, United Kingdom | 201-500 | Exact match | 58 contacts → |
“How we manage water and wastewater systems now will be critical for our communities and ecosystems for many generations to come.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Hydrotec Water Treatment Specialistshydrotec.co.uk HQ: High Wycombe, United KingdomReported employees: 51-200 | High Wycombe, United Kingdom | 51-200 | Exact match | 50 contacts → |
“Hydrotec is the UK’s leading company in the design and manufacture of water treatment products for the building services industry.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Colloidecolloide.com HQ: Tyrone, United KingdomReported employees: 51-200 | Tyrone, United Kingdom | 51-200 | Exact match | 46 contacts → |
“Colloide Engineering Systems are a process engineering company, delivering tailored solutions for clients across many industries including Water and Wastewater, Food & Drink…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Hydro International UK Wastewater Serviceshydro-int.com HQ: Portland, United KingdomReported employees: 201-500 | Portland, United Kingdom | 201-500 | Exact match | 45 contacts → |
“Hydro International, a CRH Company, provides advanced products, services and expertise to help municipal, industrial and construction customers to improve their water management…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Panton Mcleodpantonmcleod.co.uk HQ: Selkirk, United KingdomReported employees: 11-50 | Selkirk, United Kingdom | 11-50 | Exact match | 35 contacts → |
“Our teams are dedicated to supporting our clients to protect, maintain and improve water quality within treatment and distribution systems.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Marsh Industries LTDmarshindustries.co.uk HQ: Northamptonshire, United KingdomReported employees: 51-200 | Northamptonshire, United Kingdom | 51-200 | Exact match | 33 contacts → |
“Marsh Industries delivers world-class water/wastewater treatment products and solutions to the domestic, commercial, agricultural and leisure sectors from its UK manufacturing…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Wcsee Wastewater Marlowe Environmental Serviceswcs-group.co.uk HQ: Gloucester, United KingdomReported employees: 11-50 | Gloucester, United Kingdom | 11-50 | Exact match | 32 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Arvia Technologyarviatechnology.com HQ: Runcorn, United KingdomReported employees: 11-50 | Runcorn, United Kingdom | 11-50 | Exact match | 32 contacts → |
“Tertiary water treatment specialist.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Watertight Managementwatertightmanagement.com HQ: Bromsgrove, United KingdomReported employees: 51-200 | Bromsgrove, United Kingdom | 51-200 | Exact match | 31 contacts → |
“Watertight Management has established itself as a leader in the provision of Clean and Waste water management services.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Rhamesrhames.uk HQ: Nottingham, United KingdomReported employees: 51-200 | Nottingham, United Kingdom | 51-200 | Exact match | 29 contacts → |
“rhames are innovators within the Manufacturing & Engineering Services sector specialising in Pharmaceutical, Petrochemical and Utilities industries with key representations within…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Lubron UKlubron.co.uk HQ: Colchester, United KingdomReported employees: 51-200 | Colchester, United Kingdom | 51-200 | Exact match | 26 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Retrofloretroflo.com HQ: Seaham, United KingdomReported employees: 11-50 | Seaham, United Kingdom | 11-50 | Exact match | 25 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Smoothflow Water Treatment & Commissioningsmoothflow.co.uk HQ: Rickmansworth, United KingdomReported employees: 51-200 | Rickmansworth, United Kingdom | 51-200 | Exact match | 23 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 211 company matches
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Water treatment plant contractors: dataset insights
September 19, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
208 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 211 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 19, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for water treatment plant contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many water treatment plant contractors did RevenueBase find based in the United Kingdom?
The saved snapshot records 211 matching company records, 4,383 tracked contacts and 2,062 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 19, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 water treatment plant contractors based in the United Kingdom. Snapshot: September 19, 2026. https://revenuebase.ai/companies/water-treatment-plant-contractors/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Water treatment plant contractors based in Ahmedabad, India
- Water treatment plant contractors based in Chennai, India
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