Company lists · Data refreshed September 2026

Top 25 Municipal water utilities worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 2,849 companies tracked

RevenueBase identified 2,849 municipal water utilities worldwide as of September 2026 and tracks 188,863 professional contacts across them, including 64,165 with verified work emails and 0 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers municipal water utilities 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 utilities 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

2,849Companies

188,863Contacts tracked

64,165Verified emails

0Mobile numbers

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The 25 largest municipal water utilities worldwide

Ranked by team size

Top 25 of 2,849 municipal water utilities 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 utilities: 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	Sabesp	Strong evidence	Sao Paulo, BrazilHQ checked Sep 17, 2026	10001+	10,050 contacts →
	Strong evidence “Sabesp is a mixed capital company that was founded in 1973 and is currently responsible for supplying water and collecting and treating sewage in the 375 municipalities of São…” Source: RevenueBase Database · checked Sep 17, 2026
3	Thames Water	Partial evidence	Reading, United KingdomHQ checked Sep 17, 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 17, 2026
4	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
5	LOS Angeles Department Of Water And Power	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 17, 2026	5,001-10,000	4,630 contacts →
	Strong evidence “The Los Angeles Department of Water and Power (LADWP), the largest municipal utility in the United States, was established more than 100 years ago to deliver reliable, safe water…” Source: RevenueBase Database · checked Sep 17, 2026
6	SAUR	Partial evidence	Issy-les-moulineaux, FranceHQ checked Sep 17, 2026	10001+	3,694 contacts →
	Partial evidence “As a pure player in water and essential services, Saur works to protect the environment in the heart of the territories it serves.” Source: RevenueBase Database · checked Sep 17, 2026
7	Sydney Water	Partial evidence	Parramatta, AustraliaHQ checked Sep 17, 2026	1,001-5,000	3,609 contacts →
	Partial evidence “We deliver essential and sustainable water services for the benefit of the community.” Source: RevenueBase Database · checked Sep 17, 2026
8	Anglian Water Services	Partial evidence	Huntingdon, United KingdomHQ checked Sep 17, 2026	5,001-10,000	3,430 contacts →
	Partial evidence “Anglian Water supply water and water recycling services to more than six million domestic and business customers in the east of England and Hartlepool.” Source: RevenueBase Database · checked Sep 17, 2026
9	Aegea Saneamento	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 17, 2026	10001+	3,386 contacts →
	Indirect evidence “Somos a Aegea Saneamento, empresa líder no setor.” Source: RevenueBase Database · checked Sep 17, 2026
10	American Water	Partial evidence	Camden, NJ, United StatesHQ checked Sep 17, 2026	5,001-10,000	2,876 contacts →
	Partial evidence “American Water (NYSE: AWK) is the largest regulated water and wastewater utility company in the United States.” Source: RevenueBase Database · checked Sep 17, 2026
11	Corsan	Indirect evidence	Porto Alegre, BrazilHQ checked Sep 17, 2026	1,001-5,000	2,788 contacts →
	Indirect evidence “Atendendo a mais de 6,5 milhões de clientes, a Corsan é responsável pelo saneamento básico em 317 cidades do Rio Grande do Sul.” Source: RevenueBase Database · checked Sep 17, 2026
12	CEDAE	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 17, 2026	1,001-5,000	2,478 contacts →
	Indirect evidence “Constituída oficialmente em 1º de agosto de 1975, a Companhia Estadual de Águas e Esgotos (CEDAE) é oriunda da fusão da Empresa de Águas do Estado da Guanabara (CEDAG), da Empresa…” Source: RevenueBase Database · checked Sep 17, 2026
13	Copasa	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 17, 2026	10001+	2,034 contacts →
	Indirect evidence “Página Oficial da COPASA -” Source: RevenueBase Database · checked Sep 17, 2026
14	Iguá Saneamento	Indirect evidence	São Paulo, BrazilHQ checked Sep 17, 2026	1,001-5,000	1,905 contacts →
	Indirect evidence “A Iguá Saneamento é uma das maiores empresas de saneamento do Brasil, com operações em 120 municípios de Alagoas, Mato Grosso, Paraná, Rio de Janeiro, São Paulo e Sergipe.” Source: RevenueBase Database · checked Sep 17, 2026
15	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
16	Sanepar	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	5,001-10,000	1,736 contacts →
	Indirect evidence “Visão e Missão Nossa Visão Consolidar a Sanepar como empresa pública, comprometida com a universalização do acesso aos serviços de saneamento ambiental.” Source: RevenueBase Database · checked Sep 17, 2026
17	Vitens	Indirect evidence	Zwolle, NetherlandsHQ checked Sep 17, 2026	1,001-5,000	1,690 contacts →
	Indirect evidence “Vitens is het grootste drinkwaterbedrijf van Nederland.” Source: RevenueBase Database · checked Sep 17, 2026
18	Colorado Springs Utilities	Partial evidence	Colorado Springs, CO, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,675 contacts →
	Partial evidence “Colorado Springs Utilities is the largest community-owned, not-for-profit, four-service utility in the nation.” Source: RevenueBase Database · checked Sep 17, 2026
19	Waternet	Partial evidence	Amsterdam, NetherlandsHQ checked Sep 17, 2026	1,001-5,000	1,627 contacts →
	Partial evidence “Water is overal om ons heen.” Source: RevenueBase Database · checked Sep 17, 2026
20	Aguas Andinas	Indirect evidence	Las Condes, ChileHQ checked Sep 17, 2026	1,001-5,000	1,553 contacts →
	Indirect evidence “Nuestra gestión se sustenta en altos estándares de profesionalismo y experiencia que nos permite entregar un servicio de gran calidad, cautelando la sostenibilidad de los recursos…” Source: RevenueBase Database · checked Sep 17, 2026
21	AQUA	Strong evidence	Bryn Mawr, PA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,478 contacts →
	Strong evidence “Aqua is one of the largest U.S-based, publicly traded water and wastewater utilities, serving more than 3 million people in Illinois, Indiana, New Jersey, North Carolina…” Source: RevenueBase Database · checked Sep 17, 2026
22	Manila Water	Partial evidence	Quezon City, PhilippinesHQ checked Sep 17, 2026	1,001-5,000	1,471 contacts →
	Partial evidence “Manila Water Company, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
23	EBMUD	Strong evidence	Oakland, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,434 contacts →
	Strong evidence “East Bay Municipal Utility District is a California public utility that supplies high-quality drinking water, generates renewable energy and provides wastewater treatment and…” Source: RevenueBase Database · checked Sep 17, 2026
24	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
25	Grupo Águas DO Brasil	Indirect evidence	Niterói, BrazilHQ checked Sep 17, 2026	1,001-5,000	1,334 contacts →
	Indirect evidence “Fundado em 1998, o Grupo Águas do Brasil é um dos principais grupos privados de saneamento básico do país, presente em 32 municípios nos estados do Rio de Janeiro, Minas Gerais e…” 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 utilities. 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 utilities.
Partial evidence: Its own public description names part of municipal water utilities, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name municipal water utilities. 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 2,849 municipal water utilities worldwide

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Municipal water utilities worldwide at a glance

As of Sep 17, 2026

34.0%Verified-email coverage

66.3Average contacts per company

11-50Median size (employees)

0.8%Largest-city concentration · Sao Paulo

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

989

11-50

810

51-200

573

201-500

253

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 utilities, 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: 21 countries, largest first: the United States, Brazil, Germany, Italy, France, India, Spain, the United Kingdom, Australia, Canada and 11 more. Country and city lists for municipal water utilities are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “municipal water utilities”. 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 utilities), 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 utilities, 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, 64,165 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 utilities by location

21 lists · largest first

Every Municipal water utilities 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 utilities, 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 utilities are there worldwide?

RevenueBase identified 2,849 municipal water utilities 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 utilities?

The United States leads with 1,095 companies, followed by Brazil (261) and Germany (235). Every municipal water utilities list by country and city is linked on this page.

Which city has the most municipal water utilities?

Sao Paulo leads with 23 headquartered companies, followed by Dubai (16) and Pune (16).

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 64,165 verified decision-maker contacts tracked across these 2,849 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.