Company lists · Data refreshed September 2026

Top 25 Water distribution companies worldwide

Name: Water distribution companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 1,122 companies tracked

RevenueBase identified 1,122 water distribution companies worldwide as of September 2026 and tracks 107,092 professional contacts across them, including 39,407 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 water distribution companies 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 19, 2026. Country and city lists for water distribution companies 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 19, 2026 86% judged on-target in blind review

1,122Companies

107,092Contacts tracked

39,407Verified emails

0Mobile numbers

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The 25 largest water distribution companies worldwide

Ranked by team size

Top 25 of 1,122 water distribution companies worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to water distribution companies: 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	Sabesp	Partial evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	10001+	10,050 contacts →
	Partial 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 19, 2026
2	Thames Water	Partial evidence	Reading, United KingdomHQ checked Sep 19, 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 19, 2026
3	Severn Trent	Partial evidence	Coventry, United KingdomHQ checked Sep 19, 2026	5,001-10,000	5,563 contacts →
	Partial evidence “Water is wonderful.” Source: RevenueBase Database · checked Sep 19, 2026
4	Water Corporation	Partial evidence	Leederville, AustraliaHQ checked Sep 19, 2026	1,001-5,000	3,828 contacts →
	Partial evidence “We’re the principal supplier of water, wastewater and drainage services in Western Australia to hundreds of thousands of homes, businesses and farms, as well as providing bulk…” Source: RevenueBase Database · checked Sep 19, 2026
5	SAUR	Partial evidence	Issy-les-moulineaux, FranceHQ checked Sep 19, 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 19, 2026
6	Sydney Water	Partial evidence	Parramatta, AustraliaHQ checked Sep 19, 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 19, 2026
7	Anglian Water Services	Partial evidence	Huntingdon, United KingdomHQ checked Sep 19, 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 19, 2026
8	American Water	Partial evidence	Camden, NJ, United StatesHQ checked Sep 19, 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 19, 2026
9	Corsan	Indirect evidence	Porto Alegre, BrazilHQ checked Sep 19, 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 19, 2026
10	CEDAE	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 19, 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 19, 2026
11	Core & Main	Indirect evidence	St. Louis, MO, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,165 contacts →
	Indirect evidence “Based in St.” Source: RevenueBase Database · checked Sep 19, 2026
12	Copasa	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 19, 2026	10001+	2,034 contacts →
	Indirect evidence “Página Oficial da COPASA -” Source: RevenueBase Database · checked Sep 19, 2026
13	DŴR Cymru Welsh Water	Indirect evidence	Cardiff, United KingdomHQ checked Sep 19, 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 19, 2026
14	NWG Northumbrian Water Group	Partial evidence	Durham, United KingdomHQ checked Sep 19, 2026	1,001-5,000	1,629 contacts →
	Partial evidence “NWG (Northumbrian Water Group) provides water and sewerage services to 2.7 million people in the North East of England as Northumbrian Water, and water services to 1.5 million…” Source: RevenueBase Database · checked Sep 19, 2026
15	AQUA	Partial evidence	Bryn Mawr, PA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,478 contacts →
	Partial 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 19, 2026
16	Manila Water	Partial evidence	Quezon City, PhilippinesHQ checked Sep 19, 2026	1,001-5,000	1,471 contacts →
	Partial evidence “Manila Water Company, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
17	EBMUD	Partial evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,434 contacts →
	Partial 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 19, 2026
18	Aqualia	Partial evidence	Madrid, SpainHQ checked Sep 19, 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 19, 2026
19	Wssc Water	Partial evidence	Laurel, MD, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,288 contacts →
	Partial evidence “Established in 1918, WSSC Water is currently among the largest water and wastewater utilities in the nation, with a network of nearly miles of drinking water pipeline and over…” Source: RevenueBase Database · checked Sep 19, 2026
20	Urban Utilities	Partial evidence	Fortitude Valley, AustraliaHQ checked Sep 19, 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 19, 2026
21	Inframark	Partial evidence	Horsham, PA, United StatesHQ checked Sep 19, 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 19, 2026
22	SIAAP	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	1,001-5,000	968 contacts →
	Indirect evidence “Une entreprise publique unique en Europe Son périmètre d'intervention englobe quatre départements et 180 communes reparties sur quatre autres départements, le SIAAP est - le seul…” Source: RevenueBase Database · checked Sep 19, 2026
23	Affinity Water	Partial evidence	Hatfield, United KingdomHQ checked Sep 19, 2026	1,001-5,000	928 contacts →
	Partial evidence “Our vision is to be the leading community-focused water company.” Source: RevenueBase Database · checked Sep 19, 2026
24	Yarra Valley Water	Indirect evidence	Melbourne, AustraliaHQ checked Sep 19, 2026	501-1,000	821 contacts →
	Indirect evidence “We service 2 million people and businesses across a area, from Wallan in the north to Warburton in the east.” Source: RevenueBase Database · checked Sep 19, 2026
25	Acquedotto Pugliese SPA	Indirect evidence	Bari, ItalyHQ checked Sep 19, 2026	1,001-5,000	814 contacts →
	Indirect evidence “Da oltre un secolo portiamo acqua di qualità, un bene prezioso per la vita e lo sviluppo del territorio, a milioni di persone.” Source: RevenueBase Database · checked Sep 19, 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: water distribution companies. 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 water distribution companies.
Partial evidence: Its own public description names part of water distribution companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water distribution companies. 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 1,122 water distribution companies worldwide

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Water distribution companies worldwide at a glance

As of Sep 19, 2026

36.8%Verified-email coverage

95.4Average contacts per company

11-50Median size (employees)

1.0%Largest-city concentration · Sao Paulo

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

375

11-50

267

51-200

251

201-500

117

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 water distribution companies, 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: 11 countries, largest first: the United States, Brazil, Germany, Italy, France, Spain, the United Kingdom, Portugal, Australia, Denmark and 1 more. Country and city lists for water distribution companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “water distribution companies”. 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 water distribution companies), 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 water distribution companies, 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, 39,407 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 19, 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.

Water distribution companies by location

11 lists · largest first

Every Water distribution companies 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 water distribution companies, 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 water distribution companies are there worldwide?

RevenueBase identified 1,122 water distribution companies 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?

Sabesp, headquartered in Sao Paulo, tops this list with the largest team on record.

Which country has the most water distribution companies?

The United States leads with 474 companies, followed by Brazil (124) and Germany (115). Every water distribution companies list by country and city is linked on this page.

Which city has the most water distribution companies?

Sao Paulo leads with 11 headquartered companies, followed by Valencia (5) and Campinas (4).

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 39,407 verified decision-maker contacts tracked across these 1,122 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 19, 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.