Company lists · Data refreshed November 2026
Top 25 Wastewater treatment engineering services based in the United Kingdom
RevenueBase identified 373 company matches for wastewater treatment engineering services associated with the United Kingdom as of November 2026 and tracks 7,943 professional contacts across them, including 2,884 with verified work emails. London is the largest hub.
This list covers company matches for wastewater treatment engineering 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 November 3, 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 wastewater treatment engineering services based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 971 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 · Nov 3, 2026 · View company records in RevenueBase | |||||
| 2 | 310 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 · Nov 3, 2026 · View company records in RevenueBase | |||||
| 3 | 198 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 · Nov 3, 2026 · View company records in RevenueBase | |||||
| 4 | 195 contacts → | ||||
Exact match “Originally established in 1977, OnSite is a South Staffordshire Group owned company that has grown through strategic acquisition and organic expansion to become one of the UK's…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 5 | 166 contacts → | ||||
Exact match “We’re envolve, specialist civil engineers.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 6 | 123 contacts → | ||||
Exact match “TES are Mechanical & Electrical Specialists, working to the highest standard of engineering excellence.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 7 | 114 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 · Nov 3, 2026 · View company records in RevenueBase | |||||
| 8 | 99 contacts → | ||||
Exact match “Crowder Consulting provides innovative engineering consultancy services and software solutions to the water industry, specialising in water supply, water distribution and sewer…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 9 | 87 contacts → | ||||
Exact match “At Siltbuster Ltd, we operate the UK’s largest rental fleet of water treatment systems, setting the industry benchmark for rapid, reliable, and cost-effective solutions.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 10 | 84 contacts → | ||||
Exact match “Welcome to Gel Engineering.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 11 | 84 contacts → | ||||
Exact match “Envirogen Group is a global leader in industrial water treatment and process filtration solutions.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 12 | 78 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 · Nov 3, 2026 · View company records in RevenueBase | |||||
| 13 | 75 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 · Nov 3, 2026 · View company records in RevenueBase | |||||
| 14 | 75 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 · Nov 3, 2026 · View company records in RevenueBase | |||||
| 15 | 73 contacts → | ||||
Exact match “Integrated Water Services M&E is an established Principle Contractor and Designer within the MEICA Process sector, specialising in pump diagnostics and refurbishment, turn-key…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 16 | 65 contacts → | ||||
Exact match “Waterco Datrys is a leading consultancy in water and environmental engineering, formed through the merger of Waterco and Datrys in 2024.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 17 | 64 contacts → | ||||
Exact match “Welcome to Advanced Water Technologies: A dedicated water treatment & hygiene specialists focused on providing optimum solutions across a vast array of services, chemicals…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 18 | 56 contacts → | ||||
Exact match “With over 40 year’s industry experience, we are a leading engineering contractor with specialist expertise in the water and wastewater sector.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 19 | 56 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 · Nov 3, 2026 · View company records in RevenueBase | |||||
| 20 | 55 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 · Nov 3, 2026 · View company records in RevenueBase | |||||
| 21 | 52 contacts → | ||||
Exact match “HUBER Technology was incorporated in the UK in 1993 as a wholly owned subsidiary of Huber SE- Huber UK & Ireland Limited, the manufacturers of the ROTAMAT range of waste water…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 22 | 52 contacts → | ||||
Exact match “Alpheus is one of the UK’s leading wastewater management and environmental solutions providers.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 23 | 49 contacts → | ||||
Exact match “Veriflo Ltd - a professional strategic project management company, specialising in clean water asset services.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 24 | 47 contacts → | ||||
Exact match “ph Water technologies are one of the leading ‘Total Environment Solutions Companies' operating within the UK.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase | |||||
| 25 | 44 contacts → | ||||
Exact match “Bluewater Bio is an award winning global leader in sustainable water and wastewater treatment.” Recorded in the RevenueBase company graph · Nov 3, 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 “wastewater treatment engineering 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 373 wastewater treatment engineering services based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 2,884 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Wastewater treatment engineering services based in the United Kingdom at a glance
As of Nov 3, 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 373 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 “wastewater treatment engineering 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 2,884 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on November 3, 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 “wastewater treatment engineering services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many wastewater treatment engineering services are there based in the United Kingdom?
RevenueBase identified 373 company matches for wastewater treatment engineering services associated with the United Kingdom as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
MWH Treatment tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most wastewater treatment engineering services?
London leads with 15 company records, followed by Manchester (7) and Glasgow (5).
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 2,884 professional contacts with verified work emails tracked across these 373 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 3, 2026.
Ready to reach these companies? Verified emails and direct dials for all 373 wastewater treatment engineering services based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Wastewater treatment engineering services by geography
- Wastewater treatment engineering services based in Sao Paulo, Brazil
- Wastewater treatment engineering services based in Ahmedabad, India
- Wastewater treatment engineering services based in Bangalore, India
- Wastewater treatment engineering services based in Chennai, India
- Wastewater treatment engineering services based in Mumbai, India
- Wastewater treatment engineering services based in Pune, India
- Wastewater treatment engineering services based in Singapore, Singapore
- Wastewater treatment engineering services based in Austin, United States
- Wastewater treatment engineering services based in Houston, United States
- Wastewater treatment engineering services based in Argentina
- Wastewater treatment engineering services based in Australia
- Wastewater treatment engineering services based in Austria
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
- Wastewater treatment engineering services based in Sao Paulo, Brazil
- Wastewater treatment engineering services based in Ahmedabad, India
- Wastewater treatment engineering services based in Bangalore, India
- Wastewater treatment engineering services based in Chennai, India
- Wastewater treatment engineering services based in Mumbai, India
- Wastewater treatment engineering services based in Pune, India
Company intelligence · public preview
Top 25 wastewater treatment engineering services 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 373 matching company records for wastewater treatment engineering services based in the United Kingdom, with 7,943 tracked contacts and 2,884 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: November 3, 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 wastewater treatment engineering services 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 | 971 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 · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Severn Trent Servicesstservices.co.ukHQ: Coventry, United KingdomReported employees: 1,001-5,000 | Coventry, United Kingdom | 1,001-5,000 | Exact match | 310 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 · November 3, 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 | 198 contacts → |
“Biwater is a world leader in treated water, providing large-scale water and wastewater solutions for clients across the world.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Onsite Central Limitedonsite.co.uk HQ: Worcester, United KingdomReported employees: 201-500 | Worcester, United Kingdom | 201-500 | Exact match | 195 contacts → |
“Originally established in 1977, OnSite is a South Staffordshire Group owned company that has grown through strategic acquisition and organic expansion to become one of the UK's…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Envolve Infrastructureenvolve-infrastructure.co.ukHQ: Cardiff Road, United KingdomReported employees: 201-500 | Cardiff Road, United Kingdom | 201-500 | Exact match | 166 contacts → |
“We’re envolve, specialist civil engineers.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | TES Grouptesgroup.com HQ: Cookstown, United KingdomReported employees: 51-200 | Cookstown, United Kingdom | 51-200 | Exact match | 123 contacts → |
“TES are Mechanical & Electrical Specialists, working to the highest standard of engineering excellence.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Enpureenpure.co.ukHQ: Birmingham, United KingdomReported employees: 51-200 | Birmingham, United Kingdom | 51-200 | Exact match | 114 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 · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Crowder Consultingcrowderconsult.comHQ: Birkenhead, United KingdomReported employees: 51-200 | Birkenhead, United Kingdom | 51-200 | Exact match | 99 contacts → |
“Crowder Consulting provides innovative engineering consultancy services and software solutions to the water industry, specialising in water supply, water distribution and sewer…” Recorded description excerpt · November 3, 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 | 87 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 · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | GEL Engineeringgelengineering.co.uk HQ: Enfield, United KingdomReported employees: 51-200 | Enfield, United Kingdom | 51-200 | Exact match | 84 contacts → |
“Welcome to Gel Engineering.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Envirogen Groupenvirogengroup.comHQ: Alfreton, United KingdomReported employees: 201-500 | Alfreton, United Kingdom | 201-500 | Exact match | 84 contacts → |
“Envirogen Group is a global leader in industrial water treatment and process filtration solutions.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Richard Alanrichardalan.co.ukHQ: Dewsbury, United KingdomReported employees: 51-200 | Dewsbury, United Kingdom | 51-200 | Exact match | 78 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 · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Jacopa Limitedjacopa.comHQ: West Bromwich, United KingdomReported employees: 51-200 | West Bromwich, United Kingdom | 51-200 | Exact match | 75 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 · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Nijhuis Saur Industries UK And Irelandnijhuisindustries.comHQ: United Kingdom & Ireland, United KingdomReported employees: 201-500 | United Kingdom & Ireland, United Kingdom | 201-500 | Exact match | 75 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 · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | IWS Mechanical & Electricalintegrated-water.co.uk HQ: Walsall, United KingdomReported employees: 51-200 | Walsall, United Kingdom | 51-200 | Exact match | 73 contacts → |
“Integrated Water Services M&E is an established Principle Contractor and Designer within the MEICA Process sector, specialising in pump diagnostics and refurbishment, turn-key…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Waterco Datryswaterco.co.ukHQ: Ruthin, United KingdomReported employees: 11-50 | Ruthin, United Kingdom | 11-50 | Exact match | 65 contacts → |
“Waterco Datrys is a leading consultancy in water and environmental engineering, formed through the merger of Waterco and Datrys in 2024.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Advanced Water Technologiesadvanced-water.co.ukHQ: Warrington, United KingdomReported employees: 51-200 | Warrington, United Kingdom | 51-200 | Exact match | 64 contacts → |
“Welcome to Advanced Water Technologies: A dedicated water treatment & hygiene specialists focused on providing optimum solutions across a vast array of services, chemicals…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  BSGbsgcivilengineering.co.ukHQ: Maghera, United KingdomReported employees: 51-200 | Maghera, United Kingdom | 51-200 | Exact match | 56 contacts → |
“With over 40 year’s industry experience, we are a leading engineering contractor with specialist expertise in the water and wastewater sector.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Hydrotec Water Treatment Specialistshydrotec.co.ukHQ: High Wycombe, United KingdomReported employees: 51-200 | High Wycombe, United Kingdom | 51-200 | Exact match | 56 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 · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  ESD Joint Ventureesd.scotHQ: Stepps, United KingdomReported employees: 201-500 | Stepps, United Kingdom | 201-500 | Exact match | 55 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 · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Huber Technology UK & Irelandhuber.co.uk HQ: Chippenham, United KingdomReported employees: 51-200 | Chippenham, United Kingdom | 51-200 | Exact match | 52 contacts → |
“HUBER Technology was incorporated in the UK in 1993 as a wholly owned subsidiary of Huber SE- Huber UK & Ireland Limited, the manufacturers of the ROTAMAT range of waste water…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Alpheus Environmentalalpheus.co.ukHQ: Huntingdon, United KingdomReported employees: 51-200 | Huntingdon, United Kingdom | 51-200 | Exact match | 52 contacts → |
“Alpheus is one of the UK’s leading wastewater management and environmental solutions providers.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Veriflo Limitedveriflo.co.ukHQ: East Malling, United KingdomReported employees: 11-50 | East Malling, United Kingdom | 11-50 | Exact match | 49 contacts → |
“Veriflo Ltd - a professional strategic project management company, specialising in clean water asset services.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | PH Water Part Of Compliiphwatertechnologies.co.uk HQ: Farnborough, United KingdomReported employees: 51-200 | Farnborough, United Kingdom | 51-200 | Exact match | 47 contacts → |
“ph Water technologies are one of the leading ‘Total Environment Solutions Companies' operating within the UK.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Bluewater BIObluewaterbio.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 44 contacts → |
“Bluewater Bio is an award winning global leader in sustainable water and wastewater treatment.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 373 company matches
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Wastewater treatment engineering services: dataset insights
November 3, 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
361 records in the displayed employee bands.
12 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 373 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: November 3, 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 wastewater treatment engineering services?
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 wastewater treatment engineering services did RevenueBase find based in the United Kingdom?
The saved snapshot records 373 matching company records, 7,943 tracked contacts and 2,884 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: November 3, 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
Wastewater treatment engineering services by geography
- Wastewater treatment engineering services based in Sao Paulo, Brazil
- Wastewater treatment engineering services based in Ahmedabad, India
- Wastewater treatment engineering services based in Bangalore, India
- Wastewater treatment engineering services based in Chennai, India
- Wastewater treatment engineering services based in Mumbai, India
- Wastewater treatment engineering services based in Pune, India
- Wastewater treatment engineering services based in Singapore, Singapore
- Wastewater treatment engineering services based in Austin, United States
- Wastewater treatment engineering services based in Houston, United States
- Wastewater treatment engineering services based in Argentina
- Wastewater treatment engineering services based in Australia
- Wastewater treatment engineering services based in Austria
Cite this list
RevenueBase Data Team. Top 25 wastewater treatment engineering services based in the United Kingdom. Snapshot: November 3, 2026. https://revenuebase.ai/companies/wastewater-treatment-engineering-services/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
- Wastewater treatment engineering services based in Sao Paulo, Brazil
- Wastewater treatment engineering services based in Ahmedabad, India
- Wastewater treatment engineering services based in Bangalore, India
- Wastewater treatment engineering services based in Chennai, India
- Wastewater treatment engineering services based in Mumbai, India
- Wastewater treatment engineering services based in Pune, India
Company intelligence · public preview
Top 25 wastewater treatment engineering services based in the United Kingdom
RevenueBase records 373 matching company records for wastewater treatment engineering services based in the United Kingdom, with 7,943 tracked contacts and 2,884 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: November 3, 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 wastewater treatment engineering services 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 | 971 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 · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Severn Trent Servicesstservices.co.uk HQ: Coventry, United KingdomReported employees: 1,001-5,000 | Coventry, United Kingdom | 1,001-5,000 | Exact match | 310 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 · November 3, 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 | 198 contacts → |
“Biwater is a world leader in treated water, providing large-scale water and wastewater solutions for clients across the world.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Onsite Central Limitedonsite.co.uk HQ: Worcester, United KingdomReported employees: 201-500 | Worcester, United Kingdom | 201-500 | Exact match | 195 contacts → |
“Originally established in 1977, OnSite is a South Staffordshire Group owned company that has grown through strategic acquisition and organic expansion to become one of the UK's…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Envolve Infrastructureenvolve-infrastructure.co.uk HQ: Cardiff Road, United KingdomReported employees: 201-500 | Cardiff Road, United Kingdom | 201-500 | Exact match | 166 contacts → |
“We’re envolve, specialist civil engineers.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | TES Grouptesgroup.com HQ: Cookstown, United KingdomReported employees: 51-200 | Cookstown, United Kingdom | 51-200 | Exact match | 123 contacts → |
“TES are Mechanical & Electrical Specialists, working to the highest standard of engineering excellence.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Enpureenpure.co.uk HQ: Birmingham, United KingdomReported employees: 51-200 | Birmingham, United Kingdom | 51-200 | Exact match | 114 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 · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Crowder Consultingcrowderconsult.com HQ: Birkenhead, United KingdomReported employees: 51-200 | Birkenhead, United Kingdom | 51-200 | Exact match | 99 contacts → |
“Crowder Consulting provides innovative engineering consultancy services and software solutions to the water industry, specialising in water supply, water distribution and sewer…” Recorded description excerpt · November 3, 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 | 87 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 · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | GEL Engineeringgelengineering.co.uk HQ: Enfield, United KingdomReported employees: 51-200 | Enfield, United Kingdom | 51-200 | Exact match | 84 contacts → |
“Welcome to Gel Engineering.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Envirogen Groupenvirogengroup.com HQ: Alfreton, United KingdomReported employees: 201-500 | Alfreton, United Kingdom | 201-500 | Exact match | 84 contacts → |
“Envirogen Group is a global leader in industrial water treatment and process filtration solutions.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Richard Alanrichardalan.co.uk HQ: Dewsbury, United KingdomReported employees: 51-200 | Dewsbury, United Kingdom | 51-200 | Exact match | 78 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 · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Jacopa Limitedjacopa.com HQ: West Bromwich, United KingdomReported employees: 51-200 | West Bromwich, United Kingdom | 51-200 | Exact match | 75 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 · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | 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 | 75 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 · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | IWS Mechanical & Electricalintegrated-water.co.uk HQ: Walsall, United KingdomReported employees: 51-200 | Walsall, United Kingdom | 51-200 | Exact match | 73 contacts → |
“Integrated Water Services M&E is an established Principle Contractor and Designer within the MEICA Process sector, specialising in pump diagnostics and refurbishment, turn-key…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Waterco Datryswaterco.co.uk HQ: Ruthin, United KingdomReported employees: 11-50 | Ruthin, United Kingdom | 11-50 | Exact match | 65 contacts → |
“Waterco Datrys is a leading consultancy in water and environmental engineering, formed through the merger of Waterco and Datrys in 2024.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Advanced Water Technologiesadvanced-water.co.uk HQ: Warrington, United KingdomReported employees: 51-200 | Warrington, United Kingdom | 51-200 | Exact match | 64 contacts → |
“Welcome to Advanced Water Technologies: A dedicated water treatment & hygiene specialists focused on providing optimum solutions across a vast array of services, chemicals…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | BSGbsgcivilengineering.co.uk HQ: Maghera, United KingdomReported employees: 51-200 | Maghera, United Kingdom | 51-200 | Exact match | 56 contacts → |
“With over 40 year’s industry experience, we are a leading engineering contractor with specialist expertise in the water and wastewater sector.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Hydrotec Water Treatment Specialistshydrotec.co.uk HQ: High Wycombe, United KingdomReported employees: 51-200 | High Wycombe, United Kingdom | 51-200 | Exact match | 56 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 · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | ESD Joint Ventureesd.scot HQ: Stepps, United KingdomReported employees: 201-500 | Stepps, United Kingdom | 201-500 | Exact match | 55 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 · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Huber Technology UK & Irelandhuber.co.uk HQ: Chippenham, United KingdomReported employees: 51-200 | Chippenham, United Kingdom | 51-200 | Exact match | 52 contacts → |
“HUBER Technology was incorporated in the UK in 1993 as a wholly owned subsidiary of Huber SE- Huber UK & Ireland Limited, the manufacturers of the ROTAMAT range of waste water…” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Alpheus Environmentalalpheus.co.uk HQ: Huntingdon, United KingdomReported employees: 51-200 | Huntingdon, United Kingdom | 51-200 | Exact match | 52 contacts → |
“Alpheus is one of the UK’s leading wastewater management and environmental solutions providers.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Veriflo Limitedveriflo.co.uk HQ: East Malling, United KingdomReported employees: 11-50 | East Malling, United Kingdom | 11-50 | Exact match | 49 contacts → |
“Veriflo Ltd - a professional strategic project management company, specialising in clean water asset services.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | PH Water Part Of Compliiphwatertechnologies.co.uk HQ: Farnborough, United KingdomReported employees: 51-200 | Farnborough, United Kingdom | 51-200 | Exact match | 47 contacts → |
“ph Water technologies are one of the leading ‘Total Environment Solutions Companies' operating within the UK.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Bluewater BIObluewaterbio.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 44 contacts → |
“Bluewater Bio is an award winning global leader in sustainable water and wastewater treatment.” Recorded description excerpt · November 3, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 373 company matches
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Wastewater treatment engineering services: dataset insights
November 3, 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
361 records in the displayed employee bands.
12 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 373 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: November 3, 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 wastewater treatment engineering services?
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 wastewater treatment engineering services did RevenueBase find based in the United Kingdom?
The saved snapshot records 373 matching company records, 7,943 tracked contacts and 2,884 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: November 3, 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 wastewater treatment engineering services based in the United Kingdom. Snapshot: November 3, 2026. https://revenuebase.ai/companies/wastewater-treatment-engineering-services/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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