Company lists · Data refreshed November 2026

Top 25 Wastewater pretreatment services based in the United Kingdom

RevenueBase identified 189 company matches for wastewater pretreatment services associated with the United Kingdom as of November 2026 and tracks 2,294 professional contacts across them, including 833 with verified work emails. London is the largest hub.

This list covers company matches for wastewater pretreatment 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 3, 2026 How this list was built
189Companies
2,294Contacts tracked
833Verified emails
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The 25 largest wastewater pretreatment services based in the United Kingdom

Ranked by team size
Top 25 of 189 company matches for wastewater pretreatment services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 3, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchCoventry, United KingdomHQ recorded Nov 3, 20261,001-5,000310 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
2Exact matchSurrey, United KingdomHQ recorded Nov 3, 2026501-1,000198 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
3Exact matchWorcester, United KingdomHQ recorded Nov 3, 2026201-500195 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
4Exact matchAlfreton, United KingdomHQ recorded Nov 3, 2026201-50084 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
5Exact matchWest Bromwich, United KingdomHQ recorded Nov 3, 202651-20075 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
6Exact matchUnited Kingdom & Ireland, United KingdomHQ recorded Nov 3, 2026201-50075 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
7Exact matchChippenham, United KingdomHQ recorded Nov 3, 202651-20052 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
8Exact matchStokesley, United KingdomHQ recorded Nov 3, 202651-20044 contacts →

Exact match

“Universal Tanker Group Ltd have over 25 years’ experience of supporting customers in the transport, management and disposal and of non-hazardous waste water products.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
9Exact matchMaidstone, United KingdomHQ recorded Nov 3, 202651-20040 contacts →

Exact match

“ATAC Solutions Ltd is a leading UK environmental services company specialising in wastewater services and wastewater equipment on a capital purchase or hire basis.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
10Exact matchPortland, United KingdomHQ recorded Nov 3, 2026201-50038 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 · Nov 3, 2026 · View company records in RevenueBase
11Exact matchRuncorn, United KingdomHQ recorded Nov 3, 202611-5037 contacts →

Exact match

“Tertiary water treatment specialist.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
12Exact matchNorthamptonshire, United KingdomHQ recorded Nov 3, 202651-20034 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 · Nov 3, 2026 · View company records in RevenueBase
13Exact matchBromsgrove, United KingdomHQ recorded Nov 3, 202651-20031 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 · Nov 3, 2026 · View company records in RevenueBase
14Exact matchSkipton, United KingdomHQ recorded Nov 3, 202611-5029 contacts →

Exact match

“ACWA Services Limited is a Municipal and Industrial Water and Wastewater Treatment company located in Skipton, United Kingdom.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
15Exact matchGloucester, United KingdomHQ recorded Nov 3, 202611-5029 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 · Nov 3, 2026 · View company records in RevenueBase
16Exact matchAylesbury, United KingdomHQ recorded Nov 3, 202651-20027 contacts →

Exact match

“KEE KEE is a globally recognised brand operating within in the industrial, commercial and domestic wastewater treatment industries.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
17Exact matchClaydon, United KingdomHQ recorded Nov 3, 202651-20025 contacts →

Exact match

“Established family-run business based in Claydon, Suffolk trusted by customers for over 60 years.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
18Exact matchBurton Upon Trent, United KingdomHQ recorded Nov 3, 202611-5021 contacts →

Exact match

“WE ARE SERIOUS.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
19Exact matchAlderley Edge, United KingdomHQ recorded Nov 3, 202651-20016 contacts →

Exact match

“We specialise in water treatment and disinfection, operating in almost every industry where water treatment is required.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
20Exact matchSouthampton, United KingdomHQ recorded Nov 3, 2026501-1,00015 contacts →

Exact match

“Te-Tech Process Solutions Ltd has been established to provide a dedicated service to existing and new clients in the municipal water, industrial and commercial sectors.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
21Exact matchWorcester, United KingdomHQ recorded Nov 3, 202611-5015 contacts →

Exact match

“Aquabio is a pioneering company born with a passion for innovation combined with a strong ethos for environmental sustainability.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
22Exact matchAlton, United KingdomHQ recorded Nov 3, 202611-5014 contacts →

Exact match

“Plantwork Systems Ltd (PWS) provides water and wastewater treatment solutions with a strong focus on sustainability, innovation and cost efficiency.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
23Exact matchCamberley, United KingdomHQ recorded Nov 3, 202611-5013 contacts →

Exact match

“Our expertise spans the full spectrum of water treatment, including adherence to BSRIA codes and the application of CPC Filtration methodology.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
24Exact matchNewry, United KingdomHQ recorded Nov 3, 202611-5013 contacts →

Exact match

“Viltra specialises in designing, manufacturing and installing wastewater treatment solutions for a wide range of sectors throughout the UK and Ireland, including domestic…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
25Exact matchOakstown, United KingdomHQ recorded Nov 3, 202611-5013 contacts →

Exact match

“O'Reilly Oakstown provides an environmentally responsible wastewater treatment solution for both homes and businesses.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase

Showing 25 of 189 wastewater pretreatment services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 833 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Wastewater pretreatment services based in the United Kingdom at a glance

As of Nov 3, 2026
36.3%Verified-email coverage
12.1Average contacts per company
11-50Median size (employees)
2.6%Largest-city concentration · London
Nov 3, 2026Page data refreshed

Companies by employee count

1-10
88
11-50
67
51-200
16
201-500
6
501-1,000
3
1,001-5,000
2

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 189 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 pretreatment 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 833 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 pretreatment services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many wastewater pretreatment services are there based in the United Kingdom?

RevenueBase identified 189 company matches for wastewater pretreatment 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?

Severn Trent Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most wastewater pretreatment services?

London leads with 5 company records, followed by Aylesbury (4) and Coventry (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 833 professional contacts with verified work emails tracked across these 189 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 189 wastewater pretreatment services based in the United Kingdom. Start with a free account, no credit card.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.