Company lists · Data refreshed September 2026

Top 25 Water companies based in Brazil

Name: Water companies based in Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 816 companies tracked

RevenueBase identified 816 water companies headquartered in Brazil as of September 2026 and tracks 49,975 professional contacts across them, including 9,348 with verified work emails. Sao Paulo is the largest hub.

This list covers water companies headquartered in Brazil, 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.

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

816Companies

49,975Contacts tracked

9,348Verified emails

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The 25 largest water companies based in Brazil

Ranked by team size

Top 25 of 816 water companies based in Brazil, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to water 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	Strong evidence	Sao Paulo, BrazilHQ checked Sep 19, 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 19, 2026
2	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
3	Águas DO RIO	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 19, 2026	5,001-10,000	2,477 contacts →
	Indirect evidence “Somos a concessionária responsável pela água e esgoto em 27 municípios do estado do Rio, incluído as zonas Sul, Norte e Centro da Capital.” Source: RevenueBase Database · checked Sep 19, 2026
4	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
5	Iguá Saneamento	Indirect evidence	São Paulo, BrazilHQ checked Sep 19, 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 19, 2026
6	Fortlev	Indirect evidence	Serra, BrazilHQ checked Sep 19, 2026	1,001-5,000	1,772 contacts →
	Indirect evidence “Líder absoluta no mercado nacional e campeã de vendas no segmento, a Fortlev possui as melhores tecnologias para desenvolver soluções em armazenamento de água.” Source: RevenueBase Database · checked Sep 19, 2026
7	Sanepar	Indirect evidence	Curitiba, BrazilHQ checked Sep 19, 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 19, 2026
8	Saneago	Indirect evidence	Goiânia, BrazilHQ checked Sep 19, 2026	5,001-10,000	1,713 contacts →
	Indirect evidence “Canais de relacionamento com o cliente: 0800 645 0115 (62) 3269-9115 A Saneamento de Goiás S.A.(Saneago) é concessionária de serviços de saneamento básico no estado de Goiás.” Source: RevenueBase Database · checked Sep 19, 2026
9	Grupo Águas DO Brasil	Indirect evidence	Niterói, BrazilHQ checked Sep 19, 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 19, 2026
10	Minalba Brasil	Indirect evidence	Fortaleza, BrazilHQ checked Sep 19, 2026	1,001-5,000	1,231 contacts →
	Indirect evidence “Somos a Minalba Brasil e fazemos parte do Grupo Edson Queiroz (GEQ), um dos maiores grupos multissetoriais do país.” Source: RevenueBase Database · checked Sep 19, 2026
11	Companhia DE Água E Esgoto DO Ceará - Cagece	Indirect evidence	Fortaleza, BrazilHQ checked Sep 19, 2026	1,001-5,000	1,202 contacts →
	Indirect evidence “A Companhia de Água e Esgoto do Ceará (Cagece), fundada em 1971, é uma empresa de economia mista com capital aberto que tem por finalidade a prestação dos serviços de…” Source: RevenueBase Database · checked Sep 19, 2026
12	Companhia Catarinense DE Águas E Saneamento - Casan	Indirect evidence	Florianópolis, BrazilHQ checked Sep 19, 2026	1,001-5,000	955 contacts →
	Indirect evidence “A Companhia Catarinense de Águas e Saneamento (CASAN) é uma empresa pública de economia mista e de capital aberto, que atua como concessionária do setor de saneamento por meio de…” Source: RevenueBase Database · checked Sep 19, 2026
13	Compesa	Indirect evidence	Recife, BrazilHQ checked Sep 19, 2026	5,001-10,000	953 contacts →
	Indirect evidence “Sociedade anônima de economia mista, com fins de utilidade pública, a Compesa está vinculada ao Governo do Estado de Pernambuco por meio da Secretaria de Recursos Hídricos e…” Source: RevenueBase Database · checked Sep 19, 2026
14	RIO Saneamento	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 19, 2026	501-1,000	817 contacts →
	Indirect evidence “A Rio+Saneamento é a mais nova concessionária de água e esgoto de 18 municípios do estado do Rio de Janeiro, incluindo 24 bairros da Zona Oeste carioca, uma empresa do Grupo Águas…” Source: RevenueBase Database · checked Sep 19, 2026
15	CESAN	Strong evidence	Vitoria, BrazilHQ checked Sep 19, 2026	1,001-5,000	787 contacts →
	Strong evidence “Water and sewage processing company, present in 52 cities on the state of Espírito Santo, Brazil.” Source: RevenueBase Database · checked Sep 19, 2026
16	Grupo Bauminas	Indirect evidence	Cataguazes, BrazilHQ checked Sep 19, 2026	1,001-5,000	650 contacts →
	Indirect evidence “Sobre a BAUMINAS Fundada há mais de 60 anos, a BAUMINAS é uma empresa orgulhosamente nacional, com ampla experiência na fabricação de produtos para o tratamento de águas e tem…” Source: RevenueBase Database · checked Sep 19, 2026
17	Cavo Serviços E Saneamento S.A	Indirect evidence	São Paulo, BrazilHQ checked Sep 19, 2026	1,001-5,000	486 contacts →
	Indirect evidence “Fazer o melhor sempre: o atendimento e a superação das expectativas dos clientes e da sociedade para garantir a perenidade dos serviços prestados.* Gerar valor para clientes e…” Source: RevenueBase Database · checked Sep 19, 2026
18	GS Inima Brasil	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	1,001-5,000	439 contacts →
	Indirect evidence “A GS Inima Brasil é uma das maiores e mais respeitadas companhias privadas de saneamento do país, oferecendo soluções inovadoras e integradas.” Source: RevenueBase Database · checked Sep 19, 2026
19	Sanasa Campinas	Indirect evidence	Campinas, BrazilHQ checked Sep 19, 2026	1,001-5,000	421 contacts →
	Indirect evidence “Sanasa Campinas is an environmental services company based out of Av Da Saudade, 500, Terreo, Campinas, São Paulo, Brazil.” Source: RevenueBase Database · checked Sep 19, 2026
20	Companhia Águas DE Joinville Oficial	Indirect evidence	Joinville, BrazilHQ checked Sep 19, 2026	201-500	407 contacts →
	Indirect evidence “A Companhia Águas de Joinville (CAJ) é uma empresa pública de saneamento básico da prefeitura municipal da cidade.” Source: RevenueBase Database · checked Sep 19, 2026
21	Grupo Opersan	Indirect evidence	Barueri, BrazilHQ checked Sep 19, 2026	201-500	340 contacts →
	Indirect evidence “Com mais de 40 anos de experiência, a Opersan é uma empresa brasileira que oferece ao mercado corporativo soluções completas para a gestão de águas e efluentes.” Source: RevenueBase Database · checked Sep 19, 2026
22	Produserv Servicos	Indirect evidence	Araucária, BrazilHQ checked Sep 19, 2026	501-1,000	335 contacts →
	Indirect evidence “Produserv Servicos is an utilities company based out of Rua Paulo Alves Pinto 144, Araucária, Paraná, Brazil.” Source: RevenueBase Database · checked Sep 19, 2026
23	Águas Guariroba	Indirect evidence	Campo Grande, BrazilHQ checked Sep 19, 2026	501-1,000	322 contacts →
	Indirect evidence “A Águas Guariroba é a concessionária responsável pelos serviços públicos de água e esgoto em Campo Grande, capital de Mato Grosso do Sul.” Source: RevenueBase Database · checked Sep 19, 2026
24	GMF Saneamento	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	501-1,000	304 contacts →
	Indirect evidence “Há mais de 20 anos no mercado, a empresa GMF Gestão de Medição e Faturamento Ltda, iniciou sua caminhada no processo de Gestão Operacional e Comercial no segmento de Utilities…” Source: RevenueBase Database · checked Sep 19, 2026
25	Ambiental Ceará	Indirect evidence	Cariri Ao Litoral, BrazilHQ checked Sep 19, 2026	501-1,000	283 contacts →
	Indirect evidence “A Ambiental Ceará é a de esgoto da Cagece, a maior do país no setor de saneamento básico, e chega para somar na vida do cearense, ficando responsável pela ampliação, operação e…” 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 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 companies.
Partial evidence: Its own public description names part of water companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water 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 816 water companies based in Brazil

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Water companies based in Brazil at a glance

As of Sep 19, 2026

18.7%Verified-email coverage

61.2Average contacts per company

11-50Median size (employees)

11.0%Largest-city concentration · Sao Paulo

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

334

11-50

255

51-200

116

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Brazil, so it is reported there. Company counts and contact totals on this page are exact for Brazil, over 816 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 water 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.
What qualifies: Companies headquartered in Brazil whose own description of what they do matches “water 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 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 companies, and records with no verified work email. Companies headquartered outside Brazil 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, 9,348 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 companies by metro

Water companies in Sao Paulo90

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 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 companies are there based in Brazil?

RevenueBase identified 816 water companies headquartered in Brazil 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 city has the most water companies?

Sao Paulo leads with 90 headquartered companies, followed by Rio De Janeiro (23) and Belo Horizonte (20).

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 9,348 verified decision-maker contacts tracked across these 816 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.