Company lists · Data refreshed September 2026

Top 25 Municipal water system contractors worldwide

Name: Municipal water system contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 2,545 companies tracked

RevenueBase identified 2,545 municipal water system contractors worldwide as of September 2026 and tracks 107,001 professional contacts across them, including 37,367 with verified work emails and 0 with mobile numbers. The United States is the largest market and Houston the largest hub.

This list covers municipal water system contractors worldwide, 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 17, 2026. Country and city lists for municipal water system contractors follow the table.

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 17, 2026 86% judged on-target in blind review

2,545Companies

107,001Contacts tracked

37,367Verified emails

0Mobile numbers

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The 25 largest municipal water system contractors worldwide

Ranked by team size

Top 25 of 2,545 municipal water system contractors worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to municipal water system contractors: 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	SUEZ	Partial evidence	Paris, FranceHQ checked Sep 17, 2026	10001+	21,549 contacts →
	Partial evidence “We provide essential services in the water and waste sectors to preserve resources and improve quality of life wherever we operate.” Source: RevenueBase Database · checked Sep 17, 2026
2	Downer	Indirect evidence	North Ryde, AustraliaHQ checked Sep 17, 2026	10001+	10,666 contacts →
	Indirect evidence “Enabling communities to thrive.” Source: RevenueBase Database · checked Sep 17, 2026
3	Severn Trent	Partial evidence	Coventry, United KingdomHQ checked Sep 17, 2026	5,001-10,000	5,563 contacts →
	Partial evidence “Water is wonderful.” Source: RevenueBase Database · checked Sep 17, 2026
4	SADE	Indirect evidence	75685 Paris Cedex 14, FranceHQ checked Sep 17, 2026	5,001-10,000	2,527 contacts →
	Indirect evidence “RESEAUX ET INFRASTRUCTURES Entreprise plus que centenaire forte de quelque 7 collaborateurs, la SADE est le spécialiste de la conception, la construction, la réhabilitation et…” Source: RevenueBase Database · checked Sep 17, 2026
5	Core & Main	Indirect evidence	St. Louis, MO, United StatesHQ checked Sep 17, 2026	1,001-5,000	2,165 contacts →
	Indirect evidence “Based in St.” Source: RevenueBase Database · checked Sep 17, 2026
6	DŴR Cymru Welsh Water	Indirect evidence	Cardiff, United KingdomHQ checked Sep 17, 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 17, 2026
7	Carollo Engineers	Partial evidence	Walnut Creek, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,718 contacts →
	Partial evidence “For more than 90 years, Carollo Engineers has been dedicated exclusively to water and wastewater solutions.” Source: RevenueBase Database · checked Sep 17, 2026
8	Aqualia	Partial evidence	Madrid, SpainHQ checked Sep 17, 2026	5,001-10,000	1,395 contacts →
	Partial evidence “Aqualia es la cuarta empresa de gestión del agua de Europa y la novena del Mundo por población servida, según el último ranking de Global Water Intelligence (diciembre de 2024).” Source: RevenueBase Database · checked Sep 17, 2026
9	Watercare Services Limited	Indirect evidence	Auckland, New ZealandHQ checked Sep 17, 2026	1,001-5,000	1,116 contacts →
	Indirect evidence “At Watercare we’re proud to provide a lifeline service to the people of Auckland, while protecting the environment for future generations.” Source: RevenueBase Database · checked Sep 17, 2026
10	Urban Utilities	Partial evidence	Fortitude Valley, AustraliaHQ checked Sep 17, 2026	1,001-5,000	1,064 contacts →
	Partial evidence “We’re responsible for delivering world-class drinking water and wastewater services to the growing communities of Brisbane, Ipswich, Lockyer Valley, Somerset and Scenic Rim.” Source: RevenueBase Database · checked Sep 17, 2026
11	Garney Construction	Partial evidence	North Kansas City, MO, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,009 contacts →
	Partial evidence “Garney Construction is a national leader in water and wastewater construction.” Source: RevenueBase Database · checked Sep 17, 2026
12	Inframark	Partial evidence	Horsham, PA, United StatesHQ checked Sep 17, 2026	1,001-5,000	973 contacts →
	Partial evidence “As an Azuria owned company, Inframark is a widely recognized leader in Water Infrastructure Operations and Infrastructure Management Services.” Source: RevenueBase Database · checked Sep 17, 2026
13	MWH Treatment	Partial evidence	Stockport, United KingdomHQ checked Sep 17, 2026	1,001-5,000	879 contacts →
	Partial 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 17, 2026
14	Evides Waterbedrijf	Indirect evidence	Rotterdam, NetherlandsHQ checked Sep 17, 2026	501-1,000	753 contacts →
	Indirect evidence “Duurzaam, innovatief en in verbinding met de omgeving; zo werkt Evides Waterbedrijf.” Source: RevenueBase Database · checked Sep 17, 2026
15	MEADE	Partial evidence	Chicago, IL, United StatesHQ checked Sep 17, 2026	1,001-5,000	594 contacts →
	Partial evidence “Meade leads the field in design, construction and maintenance of electric, natural gas, and telecommunications delivery systems, both above and below ground and has done so for…” Source: RevenueBase Database · checked Sep 17, 2026
16	Mastec Utility Services	Indirect evidence	Coral Gables, FL, United StatesHQ checked Sep 17, 2026	1,001-5,000	562 contacts →
	Indirect evidence “WE'RE HIRING FOR POWER, GAS, & INFRASTRUCTURE ROLES ACROSS THE COUNTRY!* Join the Team That Keeps Energy and Infrastructure Moving Forward.” Source: RevenueBase Database · checked Sep 17, 2026
17	AGS Water Solutions	Partial evidence	Paço De Arcos, PortugalHQ checked Sep 17, 2026	51-200	502 contacts →
	Partial evidence “AGS – Administração e Gestão de Sistemas de Salubridade, SA focuses on the preservation of the environment, acting throughout the entire water cycle.” Source: RevenueBase Database · checked Sep 17, 2026
18	GMB	Indirect evidence	Opheusden, NetherlandsHQ checked Sep 17, 2026	501-1,000	435 contacts →
	Indirect evidence “Al ruim een halve eeuw zetten we ons in voor duurzame oplossingen op het gebied van waterkwaliteit, waterveiligheid, bio-energie en industriële bouw en infra.” Source: RevenueBase Database · checked Sep 17, 2026
19	MWH	Indirect evidence	Broomfield, CO, United StatesHQ checked Sep 17, 2026	501-1,000	428 contacts →
	Indirect evidence “As a leading U.S.” Source: RevenueBase Database · checked Sep 17, 2026
20	Baxter & Woodman	Indirect evidence	Crystal Lake, IL, United StatesHQ checked Sep 17, 2026	201-500	385 contacts →
	Indirect evidence “Founded in 1946, Baxter & Woodman, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
21	GS Inima Environment	Partial evidence	Madrid, SpainHQ checked Sep 17, 2026	1,001-5,000	373 contacts →
	Partial evidence “Positioned as one of the companies with the largest number of plants in terms of concessions, GS Inima is a world benchmark in the water sector acting in all phases of the…” Source: RevenueBase Database · checked Sep 17, 2026
22	Fisia Italimpianti	Partial evidence	Genova, ItalyHQ checked Sep 17, 2026	51-200	362 contacts →
	Partial evidence “Fisia Italimpianti S.p.A, part of Webuild Group (the new group born in 2020 from Salini Impregilo), is a worldwide leader in the sustainable design and execution of water…” Source: RevenueBase Database · checked Sep 17, 2026
23	L&t	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	5,001-10,000	350 contacts →
	Partial evidence “L&T Construction's Water & Effluent Treatment business vertical provides state-of-the-art design, detailed engineering, procurement, project management, project execution…” Source: RevenueBase Database · checked Sep 17, 2026
24	Abdullah Ibrahim AL Sayegh And Sons Company	Indirect evidence	Riyadh, Saudi ArabiaHQ checked Sep 17, 2026	1,001-5,000	347 contacts →
	Indirect evidence “Established in 1964, Abdullah Ibrahim Al Sayegh and Sons Company a Closed Joint Stock Co.” Source: RevenueBase Database · checked Sep 17, 2026
25	Ae2s Advanced Engineering And Environmental Services, LLC	Indirect evidence	Grand Forks, ND, United StatesHQ checked Sep 17, 2026	201-500	339 contacts →
	Indirect evidence “AE2S is a specialized civil/environmental consulting engineering firm that provides professional services and our unique brand of extreme client service to clients in the upper…” Source: RevenueBase Database · checked Sep 17, 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 system contractors. 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 system contractors.
Partial evidence: Its own public description names part of municipal water system contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name municipal water system contractors. 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 2,545 municipal water system contractors worldwide

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Municipal water system contractors worldwide at a glance

As of Sep 17, 2026

34.9%Verified-email coverage

42.0Average contacts per company

11-50Median size (employees)

0.9%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

763

11-50

966

51-200

522

201-500

153

501-1,000

1,001-5,000

5,001-10,000

10001+

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 system contractors, 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.
Coverage: 20 countries, largest first: the United States, India, Italy, Germany, Australia, Brazil, the United Kingdom, France, Canada, Spain and 10 more. Country and city lists for municipal water system contractors are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “municipal water system contractors”. 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 system contractors), 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 system contractors, and records with no verified work email.
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, 37,367 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 17, 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.

Municipal water system contractors by location

20 lists · largest first

Every Municipal water system contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 system contractors, 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 system contractors are there worldwide?

RevenueBase identified 2,545 municipal water system contractors worldwide 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?

SUEZ, headquartered in Worldwide, tops this list with the largest team on record.

Which country has the most municipal water system contractors?

The United States leads with 847 companies, followed by India (207) and Italy (202). Every municipal water system contractors list by country and city is linked on this page.

Which city has the most municipal water system contractors?

Houston leads with 23 headquartered companies, followed by Sao Paulo (20) and Pune (19).

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 37,367 verified decision-maker contacts tracked across these 2,545 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 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 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.