Company lists · Data refreshed November 2026

Top 25 Wastewater system services based in the United Kingdom

RevenueBase identified 232 company matches for wastewater system services associated with the United Kingdom as of November 2026 and tracks 20,654 professional contacts across them, including 8,704 with verified work emails. London is the largest hub.

This list covers company matches for wastewater system 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 6, 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 6, 2026 How this list was built
232Companies
20,654Contacts tracked
8,704Verified emails
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The 25 largest wastewater system services based in the United Kingdom

Ranked by team size
Top 25 of 232 company matches for wastewater system services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchReading, United KingdomHQ recorded Nov 6, 20261,001-5,0006,329 contacts →

Exact match

“Thames Water is the UK’s biggest water and wastewater services provider, providing 2.7 billion litres of drinking water and safely removing 4.6 billion litres of wastewater every…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchCoventry, United KingdomHQ recorded Nov 6, 20265,001-10,0006,089 contacts →

Exact match

“Water is wonderful.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchCardiff, United KingdomHQ recorded Nov 6, 20261,001-5,0001,970 contacts →

Exact match

“Bath-times, half-times, party-times, meeting-times, and cooking-times.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchStevenage, United KingdomHQ recorded Nov 6, 20261,001-5,0001,142 contacts →

Exact match

“With a significant national workforce operating daily in local communities, we support our clients to keep their assets resilient ensuring customer taps flow, and all wastewater…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBamber Bridge, United KingdomHQ recorded Nov 6, 20261,001-5,000342 contacts →

Exact match

“Sapphire Utility Solutions has quickly become a trusted name in the utility, transport and highways sectors, known for our capabilities in delivering innovative solutions to meet…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchExeter, United KingdomHQ recorded Nov 6, 20261,001-5,000312 contacts →

Exact match

“Pennon is one of the largest environmental infrastructure groups in the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchCoventry, United KingdomHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
8Exact matchWimbledon, United KingdomHQ recorded Nov 6, 2026501-1,000219 contacts →

Exact match

“You have probably benefitted from a service we have helped fix, build or maintain if you live or have visited the southern region of the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSurrey, United KingdomHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
10Exact matchWorcester, United KingdomHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
11Exact matchKettering, United KingdomHQ recorded Nov 6, 202651-200121 contacts →

Exact match

“AWMS, part of Alumasc Group, is the first joined-up brand in integrated water management.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchMonmouth, United KingdomHQ recorded Nov 6, 202651-20087 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 6, 2026 · View company records in RevenueBase
13Exact matchWest Bromwich, United KingdomHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
14Exact matchWoore, United KingdomHQ recorded Nov 6, 202651-20070 contacts →

Exact match

“Established in 1959, T-T started out as a general engineering company before growing to consist of 6 divisions – T-T Pumps, T-T Controls and Automation, T-T Flow Valves, T-T…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchKent, United KingdomHQ recorded Nov 6, 202651-20068 contacts →

Exact match

“Willow Pumps provide expert services for all your pump, drainage, waste and clean water needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchBristol, United KingdomHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“water2business is a leading retailer of water and waste water management solutions to businesses and organisations across England and Scotland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchIvybridge, United KingdomHQ recorded Nov 6, 2026201-50062 contacts →

Exact match

“Glanville Environmental help commercial infrastructure owners reduce pollution and flood risk by inspecting and maintaining ageing drainage systems and installing new…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchMaghera, United KingdomHQ recorded Nov 6, 202651-20056 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 6, 2026 · View company records in RevenueBase
19Exact matchStepps, United KingdomHQ recorded Nov 6, 2026201-50055 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 6, 2026 · View company records in RevenueBase
20Exact matchHuntingdon, United KingdomHQ recorded Nov 6, 202651-20052 contacts →

Exact match

“Alpheus is one of the UK’s leading wastewater management and environmental solutions providers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchWolverhampton, United KingdomHQ recorded Nov 6, 202651-20048 contacts →

Exact match

“We are one of the UK’s fastest growing in and most dynamic maintenance services organisations, encompassing several specialist engineering operations within the group.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchStokesley, United KingdomHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
23Exact matchMaidstone, United KingdomHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
24Exact matchPortland, United KingdomHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
25Exact matchNorthamptonshire, United KingdomHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase

Showing 25 of 232 wastewater system services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 8,704 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Wastewater system services based in the United Kingdom at a glance

As of Nov 6, 2026
42.1%Verified-email coverage
89.0Average contacts per company
11-50Median size (employees)
2.2%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
92
11-50
76
51-200
33
201-500
5
501-1,000
6
1,001-5,000
8
5,001-10,000
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 232 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 system 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 8,704 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 6, 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 system services”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 232 company matches for wastewater system 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?

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

Which city has the most wastewater system services?

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

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 8,704 professional contacts with verified work emails tracked across these 232 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 6, 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.