Company lists · Data refreshed September 2026

Top 25 Sewage system construction companies based in the United Kingdom

Name: Sewage system construction companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 141 companies tracked

RevenueBase identified 141 company matches for sewage system construction companies associated with the United Kingdom as of September 2026 and tracks 3,433 professional contacts across them, including 1,332 with verified work emails. London is the largest hub.

This list covers company matches for sewage system construction companies 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 17, 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 Sep 17, 2026 How this list was built

141Companies

3,433Contacts tracked

1,332Verified emails

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The 25 largest sewage system construction companies based in the United Kingdom

Ranked by team size

Top 25 of 141 company matches for sewage system construction companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	MWH Treatment	Exact match	Stockport, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	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 17, 2026 · View company records in RevenueBase
2	Onsite Central Limited	Exact match	Worcester, United KingdomHQ recorded Sep 17, 2026	201-500	178 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 · Sep 17, 2026 · View company records in RevenueBase
3	Severn Trent Services	Exact match	Coventry, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	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 17, 2026 · View company records in RevenueBase
4	Envolve Infrastructure	Exact match	Cardiff Road, United KingdomHQ recorded Sep 17, 2026	201-500	136 contacts →
	Exact match “We’re envolve, specialist civil engineers.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Enpure	Exact match	Birmingham, United KingdomHQ recorded Sep 17, 2026	51-200	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 17, 2026 · View company records in RevenueBase
6	GEL Engineering	Exact match	Enfield, United KingdomHQ recorded Sep 17, 2026	51-200	70 contacts →
	Exact match “Welcome to Gel Engineering.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Willow Pumps Limited	Exact match	Kent, United KingdomHQ recorded Sep 17, 2026	51-200	63 contacts →
	Exact match “Willow Pumps provide expert services for all your pump, drainage, waste and clean water needs.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	ESD Joint Venture	Exact match	Stepps, United KingdomHQ recorded Sep 17, 2026	201-500	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 17, 2026 · View company records in RevenueBase
9	BSG	Exact match	Maghera, United KingdomHQ recorded Sep 17, 2026	51-200	49 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 · Sep 17, 2026 · View company records in RevenueBase
10	Atac Solutions LTD	Exact match	Maidstone, United KingdomHQ recorded Sep 17, 2026	11-50	44 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 · Sep 17, 2026 · View company records in RevenueBase
11	Wcsee Wastewater Marlowe Environmental Services	Exact match	Gloucester, United KingdomHQ recorded Sep 17, 2026	11-50	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 17, 2026 · View company records in RevenueBase
12	Acwa Services Limited	Exact match	Skipton, United KingdomHQ recorded Sep 17, 2026	11-50	22 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 · Sep 17, 2026 · View company records in RevenueBase
13	Lanes Group PLC	Exact match	Leeds, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	22 contacts →
	Exact match “Lanes Group is more than a wastewater solutions provider.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	KEE	Exact match	Aylesbury, United KingdomHQ recorded Sep 17, 2026	51-200	21 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 · Sep 17, 2026 · View company records in RevenueBase
15	Oneline Surveys LTD	Exact match	Wellington, United KingdomHQ recorded Sep 17, 2026	11-50	20 contacts →
	Exact match “We help commercial water and sewage infrastructure owners keep their networks flowing and reduce their risk, by identifying and resolving complex issues and maintaining assets in…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Serious Waste Management LTD	Exact match	Burton Upon Trent, United KingdomHQ recorded Sep 17, 2026	11-50	18 contacts →
	Exact match “WE ARE SERIOUS.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Te-Tech Process Solutions	Exact match	Southampton, United KingdomHQ recorded Sep 17, 2026	501-1,000	16 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 · Sep 17, 2026 · View company records in RevenueBase
18	Viltra	Exact match	Newry, United KingdomHQ recorded Sep 17, 2026	11-50	14 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 · Sep 17, 2026 · View company records in RevenueBase
19	WCI Group LTD	Exact match	Taunton, United KingdomHQ recorded Sep 17, 2026	11-50	14 contacts →
	Exact match “WCI Group Ltd is the leading expert in water and wastewater engineering, delivering innovative solutions with over four decades of expertise.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Owls Hall Environmental LTD	Exact match	Braintree, United KingdomHQ recorded Sep 17, 2026	11-50	14 contacts →
	Exact match “Providing expert solutions for both residential and commercial environments.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Plantwork Systems LTD	Exact match	Alton, United KingdomHQ recorded Sep 17, 2026	11-50	13 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 · Sep 17, 2026 · View company records in RevenueBase
22	Esmil Process Systems	Exact match	High Wycombe Bucks, United KingdomHQ recorded Sep 17, 2026	1-10	12 contacts →
	Exact match “ESMIL Process Systems is an award winning Construction company located in United Kingdom.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Clearmasters	Exact match	Horley, United KingdomHQ recorded Sep 17, 2026	11-50	11 contacts →
	Exact match “At Clearmasters Environmental, we specialise in liquid waste removal, drainage maintenance, and wastewater solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Alliance Group Solutions Limited	Exact match	Kirkby In Ashfield, United KingdomHQ recorded Sep 17, 2026	51-200	11 contacts →
	Exact match “Welcome to Alliance Group Solutions Limited.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Iwjs Group	Exact match	Colchester, United KingdomHQ recorded Sep 17, 2026	1-10	11 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 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 “sewage system construction companies”. 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 141 sewage system construction companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,332 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Sewage system construction companies based in the United Kingdom at a glance

As of Sep 17, 2026

38.8%Verified-email coverage

24.3Average contacts per company

11-50Median size (employees)

4.3%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 141 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 “sewage system construction companies” 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 1,332 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 17, 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 “sewage system construction companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many sewage system construction companies are there based in the United Kingdom?

RevenueBase identified 141 company matches for sewage system construction companies 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 sewage system construction companies?

London leads with 6 company records, followed by Newry (4) and Bridgwater (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 1,332 professional contacts with verified work emails tracked across these 141 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 17, 2026.

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About this data

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