Company lists · Data refreshed September 2026

Top 25 Municipal water infrastructure builders based in the United Kingdom

Name: Municipal water infrastructure builders based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 81 companies tracked

RevenueBase identified 81 municipal water infrastructure builders headquartered in the United Kingdom as of September 2026 and tracks 10,183 professional contacts across them, including 4,815 with verified work emails. London is the largest hub.

This list covers municipal water infrastructure builders headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

81Companies

10,183Contacts tracked

4,815Verified emails

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The 25 largest municipal water infrastructure builders based in the United Kingdom

Ranked by team size

Top 25 of 81 municipal water infrastructure builders based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to municipal water infrastructure builders: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Thames Water	Partial evidence	Reading, United KingdomHQ checked Sep 20, 2026	1,001-5,000	5,648 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
2	DŴR Cymru Welsh Water	Indirect evidence	Cardiff, United KingdomHQ checked Sep 20, 2026	1,001-5,000	1,868 contacts →
	Indirect evidence “Bath-times, half-times, party-times, meeting-times, and cooking-times.” Source: RevenueBase Database · checked Sep 20, 2026
3	MWH Treatment	Strong evidence	Stockport, United KingdomHQ checked Sep 20, 2026	1,001-5,000	879 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 20, 2026
4	Sapphire Utility Solutions LTD	Indirect evidence	Bamber Bridge, United KingdomHQ checked Sep 20, 2026	1,001-5,000	324 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
5	Severn Trent Services	Partial evidence	Coventry, United KingdomHQ checked Sep 20, 2026	1,001-5,000	137 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
6	Willow Pumps Limited	Partial evidence	Kent, United KingdomHQ checked Sep 20, 2026	51-200	63 contacts →
	Partial evidence “Willow Pumps provide expert services for all your pump, drainage, waste and clean water needs.” Source: RevenueBase Database · checked Sep 20, 2026
7	ESD Joint Venture	Partial evidence	Stepps, United KingdomHQ checked Sep 20, 2026	201-500	58 contacts →
	Partial evidence “How we manage water and wastewater systems now will be critical for our communities and ecosystems for many generations to come.” Source: RevenueBase Database · checked Sep 20, 2026
8	BSG	Partial evidence	Maghera, United KingdomHQ checked Sep 20, 2026	51-200	49 contacts →
	Partial evidence “With over 40 year’s industry experience, we are a leading engineering contractor with specialist expertise in the water and wastewater sector.” Source: RevenueBase Database · checked Sep 20, 2026
9	Wcsee Wastewater Marlowe Environmental Services	Indirect evidence	Gloucester, United KingdomHQ checked Sep 20, 2026	11-50	32 contacts →
	Indirect evidence “At WCSEE we collaborate closely with our clients to design and deliver reliable, robust, and future-proofed wastewater systems tailored to site specific requirements.” Source: RevenueBase Database · checked Sep 20, 2026
10	Aquevo	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	24 contacts →
	Partial evidence “Aquevo Limited, headquartered in North West London, is a leading provider of integrated water management services.” Source: RevenueBase Database · checked Sep 20, 2026
11	Acwa Services Limited	Strong evidence	Skipton, United KingdomHQ checked Sep 20, 2026	11-50	22 contacts →
	Strong evidence “ACWA Services Limited is a Municipal and Industrial Water and Wastewater Treatment company located in Skipton, United Kingdom.” Source: RevenueBase Database · checked Sep 20, 2026
12	Inactive	Partial evidence	Washington, United KingdomHQ checked Sep 20, 2026	201-500	16 contacts →
	Partial evidence “Fastflow Pipeline Services provides a comprehensive range of utility infrastructure services covering all aspects of pipeline networks including investigation, design, planning…” Source: RevenueBase Database · checked Sep 20, 2026
13	NPB Utilities Limited	Partial evidence	Yeovil, United KingdomHQ checked Sep 20, 2026	51-200	15 contacts →
	Partial evidence “At NPB Utilities Ltd we pride ourselves for the superior quality and diverse range of services that we provide in the water and civils industry.” Source: RevenueBase Database · checked Sep 20, 2026
14	Plantwork Systems LTD	Partial evidence	Alton, United KingdomHQ checked Sep 20, 2026	11-50	13 contacts →
	Partial evidence “Plantwork Systems Ltd (PWS) provides water and wastewater treatment solutions with a strong focus on sustainability, innovation and cost efficiency.” Source: RevenueBase Database · checked Sep 20, 2026
15	Waterwise Utilities LTD	Strong evidence	Clydebank, United KingdomHQ checked Sep 20, 2026	11-50	13 contacts →
	Strong evidence “WaterWise Utilities Ltd is an LRQA-accredited utility infrastructure contractor delivering high-quality water, electrical and traffic management solutions across Scotland.” Source: RevenueBase Database · checked Sep 20, 2026
16	Alliance Group Solutions Limited	Indirect evidence	Kirkby In Ashfield, United KingdomHQ checked Sep 20, 2026	51-200	11 contacts →
	Indirect evidence “Welcome to Alliance Group Solutions Limited.” Source: RevenueBase Database · checked Sep 20, 2026
17	J.T.Mackley & Co.Limited	Indirect evidence	Small Dole, United KingdomHQ checked Sep 20, 2026	51-200	10 contacts →
	Indirect evidence “See @Mackley for more details.” Source: RevenueBase Database · checked Sep 20, 2026
18	Evergreen Water Solutions LTD	Partial evidence	Hinckley, United KingdomHQ checked Sep 20, 2026	11-50	10 contacts →
	Partial evidence “Evergreen Water Solutions works closely with a number of international engineering companies whose expertise is in scalable wastewater treatment systems and containerised…” Source: RevenueBase Database · checked Sep 20, 2026
19	DIG & Connect	Strong evidence	London, United KingdomHQ checked Sep 20, 2026	1-10	7 contacts →
	Strong evidence “At Dig & Connect, we specialise in delivering expert water, gas, and electric infrastructure solutions for large-scale residential and commercial projects.” Source: RevenueBase Database · checked Sep 20, 2026
20	Tech Environment UK LTD	Indirect evidence	Guildford, United KingdomHQ checked Sep 20, 2026	11-50	7 contacts →
	Indirect evidence “Tech Environment UK Co.” Source: RevenueBase Database · checked Sep 20, 2026
21	J Browne Construction Co. LTD	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	6 contacts →
	Partial evidence “Browne is a water focused utility contractor based in North London.” Source: RevenueBase Database · checked Sep 20, 2026
22	Meridian Utilities Limited	Indirect evidence	Belfast, United KingdomHQ checked Sep 20, 2026	11-50	6 contacts →
	Indirect evidence “Meridian Utilities Ltd is a joint venture company consisting of Morrow Contracts Ltd, Mills Contracts Ltd and T O'Connell & Sons.” Source: RevenueBase Database · checked Sep 20, 2026
23	Stenlakes Limited	Indirect evidence	South Petherwin, United KingdomHQ checked Sep 20, 2026	11-50	4 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
24	A.Hak UK LTD	Partial evidence	Uk, United KingdomHQ checked Sep 20, 2026	501-1,000	4 contacts →
	Partial evidence “Since 1963, A.Hak has been contributing to the safe and reliable availability of water and energy for households and businesses.” Source: RevenueBase Database · checked Sep 20, 2026
25	MPC Services	Indirect evidence	Clay Cross, United KingdomHQ checked Sep 20, 2026	11-50	4 contacts →
	Indirect evidence “Our team aim to understand your specific sewage treatment or drainage needs and provide you with clear options priced fairly.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: municipal water infrastructure builders. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names municipal water infrastructure builders.
Partial evidence: Its own public description names part of municipal water infrastructure builders, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name municipal water infrastructure builders. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 81 municipal water infrastructure builders based in the United Kingdom

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Municipal water infrastructure builders based in the United Kingdom at a glance

As of Sep 20, 2026

47.3%Verified-email coverage

125.7Average contacts per company

11-50Median size (employees)

8.6%Largest-city concentration · London

Sep 20, 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 81 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among municipal water infrastructure builders, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “municipal water infrastructure builders”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names municipal water infrastructure builders), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among municipal water infrastructure builders, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 4,815 across the full list. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names municipal water infrastructure builders, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many municipal water infrastructure builders are there based in the United Kingdom?

RevenueBase identified 81 municipal water infrastructure builders headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Thames Water, headquartered in Reading, tops this list with the largest team on record.

Which city has the most municipal water infrastructure builders?

London leads with 7 headquartered companies, followed by Manchester (3) and Colchester (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 4,815 verified decision-maker contacts tracked across these 81 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 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 Smart Search, 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.