Company lists · Data refreshed October 2026

Top 25 Municipal wastewater treatment plant contractors based in the United Kingdom

RevenueBase identified 112 company matches for municipal wastewater treatment plant contractors associated with the United Kingdom as of October 2026 and tracks 3,524 professional contacts across them, including 1,433 with verified work emails. Coventry is the largest hub.

This list covers company matches for municipal wastewater 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 October 18, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 18, 2026 How this list was built
112Companies
3,524Contacts tracked
1,433Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest municipal wastewater treatment plant contractors based in the United Kingdom

Ranked by team size
Top 25 of 112 company matches for municipal wastewater treatment plant contractors based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 18, 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 matchStockport, United KingdomHQ recorded Oct 18, 20261,001-5,000930 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 · Oct 18, 2026 · View company records in RevenueBase
2Exact matchSurrey, United KingdomHQ recorded Oct 18, 2026501-1,000186 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 · Oct 18, 2026 · View company records in RevenueBase
3Exact matchWorcester, United KingdomHQ recorded Oct 18, 2026201-500183 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 · Oct 18, 2026 · View company records in RevenueBase
4Exact matchCoventry, United KingdomHQ recorded Oct 18, 20261,001-5,000147 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 · Oct 18, 2026 · View company records in RevenueBase
5Exact matchBirmingham, United KingdomHQ recorded Oct 18, 202651-200113 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 · Oct 18, 2026 · View company records in RevenueBase
6Exact matchMonmouth, United KingdomHQ recorded Oct 18, 202651-20083 contacts →

Exact match

“At Siltbuster Ltd, we operate the UK’s largest rental fleet of water treatment systems, setting the industry benchmark for rapid, reliable, and cost-effective solutions.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
7Exact matchEnfield, United KingdomHQ recorded Oct 18, 202651-20080 contacts →

Exact match

“Welcome to Gel Engineering.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
8Exact matchDewsbury, United KingdomHQ recorded Oct 18, 202651-20075 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 · Oct 18, 2026 · View company records in RevenueBase
9Exact matchWest Bromwich, United KingdomHQ recorded Oct 18, 202651-20072 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 · Oct 18, 2026 · View company records in RevenueBase
10Exact matchMaghera, United KingdomHQ recorded Oct 18, 202651-20054 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 · Oct 18, 2026 · View company records in RevenueBase
11Exact matchStepps, United KingdomHQ recorded Oct 18, 2026201-50052 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 · Oct 18, 2026 · View company records in RevenueBase
12Exact matchChippenham, United KingdomHQ recorded Oct 18, 202651-20050 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 · Oct 18, 2026 · View company records in RevenueBase
13Exact matchMaidstone, United KingdomHQ recorded Oct 18, 202611-5040 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 · Oct 18, 2026 · View company records in RevenueBase
14Exact matchPortland, United KingdomHQ recorded Oct 18, 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 · Oct 18, 2026 · View company records in RevenueBase
15Exact matchNorthamptonshire, United KingdomHQ recorded Oct 18, 202651-20033 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 · Oct 18, 2026 · View company records in RevenueBase
16Exact matchGloucester, United KingdomHQ recorded Oct 18, 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 · Oct 18, 2026 · View company records in RevenueBase
17Exact matchSkipton, United KingdomHQ recorded Oct 18, 202611-5026 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 · Oct 18, 2026 · View company records in RevenueBase
18Exact matchAylesbury, United KingdomHQ recorded Oct 18, 202651-20026 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 · Oct 18, 2026 · View company records in RevenueBase
19Exact matchStoke-on-trent, United KingdomHQ recorded Oct 18, 202651-20020 contacts →

Exact match

“Ham Baker Engineering Limited are a market leading, global organisation dedicated to the design and manufacture of innovative bespoke solutions for the water and waste water…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
20Exact matchSouthampton, United KingdomHQ recorded Oct 18, 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 · Oct 18, 2026 · View company records in RevenueBase
21Exact matchAlton, United KingdomHQ recorded Oct 18, 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 · Oct 18, 2026 · View company records in RevenueBase
22Exact matchNewry, United KingdomHQ recorded Oct 18, 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 · Oct 18, 2026 · View company records in RevenueBase
23Exact matchNewry, United KingdomHQ recorded Oct 18, 202611-5011 contacts →

Exact match

“Water Tecnik specialises in delivering practical, compliant, and cost-effective industrial wastewater and effluent treatment solutions.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
24Exact matchLichfield, United KingdomHQ recorded Oct 18, 202611-5011 contacts →

Exact match

“TUKE AND BELL LIMITED are designers and manufacturers of sewage treatment equipment”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
25Exact matchHinckley, United KingdomHQ recorded Oct 18, 202611-5010 contacts →

Exact match

“Evergreen Water Solutions works closely with a number of international engineering companies whose expertise is in scalable wastewater treatment systems and containerised…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase

Showing 25 of 112 municipal wastewater treatment plant contractors based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,433 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Municipal wastewater treatment plant contractors based in the United Kingdom at a glance

As of Oct 18, 2026
40.7%Verified-email coverage
31.5Average contacts per company
11-50Median size (employees)
3.6%Largest-city concentration · Coventry
Oct 18, 2026Page data refreshed

Companies by employee count

1-10
42
11-50
44
51-200
15
201-500
3
501-1,000
3
1,001-5,000
3

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 112 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 “municipal wastewater 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 1,433 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on October 18, 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 “municipal wastewater treatment plant contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many municipal wastewater treatment plant contractors are there based in the United Kingdom?

RevenueBase identified 112 company matches for municipal wastewater treatment plant contractors associated with the United Kingdom as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

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

Which city has the most municipal wastewater treatment plant contractors?

Coventry leads with 4 company records, followed by Newry (4) and London (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 1,433 professional contacts with verified work emails tracked across these 112 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 18, 2026.

Ready to reach these companies? Verified emails and direct dials for all 112 municipal wastewater treatment plant contractors based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

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.