Company lists · Data refreshed September 2026

Top 25 Municipal water treatment companies based in Brazil

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 285 companies tracked

RevenueBase identified 285 municipal water treatment companies headquartered in Brazil as of September 2026 and tracks 19,685 professional contacts across them, including 3,753 with verified work emails. Sao Paulo is the largest hub.

This list covers municipal water treatment 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 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

285Companies

19,685Contacts tracked

3,753Verified emails

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The 25 largest municipal water treatment companies based in Brazil

Ranked by team size

Top 25 of 285 municipal water treatment companies based in Brazil, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to municipal water treatment 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 20, 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 20, 2026
2	Grupo Águas DO Brasil	Indirect evidence	Niterói, BrazilHQ checked Sep 20, 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 20, 2026
3	Companhia DE Água E Esgoto DO Ceará - Cagece	Indirect evidence	Fortaleza, BrazilHQ checked Sep 20, 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 20, 2026
4	Grupo Bauminas	Indirect evidence	Cataguazes, BrazilHQ checked Sep 20, 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 20, 2026
5	Companhia DE Saneamento DE Sergipe	Indirect evidence	Aracaju, BrazilHQ checked Sep 20, 2026	1,001-5,000	210 contacts →
	Indirect evidence “Somos a Companhia de Saneamento de Sergipe (Deso), empresa de economia mista, criada em 25 de agosto de 1969 e responsável por estudos, projetos e execução de serviços de…” Source: RevenueBase Database · checked Sep 20, 2026
6	GR Water Solutions	Partial evidence	Cruzeiro, BrazilHQ checked Sep 20, 2026	201-500	170 contacts →
	Partial evidence “Seguindo o movimento de constante transformação e inovação, a GR Indústria Química agora é GR Water Solutions.” Source: RevenueBase Database · checked Sep 20, 2026
7	B&f Dias	Indirect evidence	Vinhedo, BrazilHQ checked Sep 20, 2026	51-200	116 contacts →
	Indirect evidence “A B&F Dias é referência mundial em soluções para tratamento de águas e efluentes.” Source: RevenueBase Database · checked Sep 20, 2026
8	Projesan Water & CO	Indirect evidence	Gaspar, BrazilHQ checked Sep 20, 2026	51-200	110 contacts →
	Indirect evidence “Na Projesan, avançamos a química de quem trata água todos os dias.” Source: RevenueBase Database · checked Sep 20, 2026
9	Catui Engenharia Ltda	Indirect evidence	Santana De Parnaiba, BrazilHQ checked Sep 20, 2026	51-200	104 contacts →
	Indirect evidence “Empresa de engenharia consultiva e executiva especializada na área de saneamento básico.” Source: RevenueBase Database · checked Sep 20, 2026
10	Hydrosistem Engenharia	Indirect evidence	Salvador, BrazilHQ checked Sep 20, 2026	1,001-5,000	92 contacts →
	Indirect evidence “A Hydrosistem Engenharia é referência nacional em soluções completas de saneamento, com mais de 20 anos de atuação no gerenciamento, operação e manutenção de sistemas de…” Source: RevenueBase Database · checked Sep 20, 2026
11	Rotária DO Brasil	Indirect evidence	Florianópolis, BrazilHQ checked Sep 20, 2026	51-200	72 contacts →
	Indirect evidence “A Rotária do Brasil é uma empresa de Engenharia especializada em projetos, implantação e operação de sistemas de tratamento de efluentes/esgotos e água potável.” Source: RevenueBase Database · checked Sep 20, 2026
12	GHS Brasil	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 20, 2026	201-500	69 contacts →
	Indirect evidence “qualidadedoar #analisequimica #efluentes #tratamentodeagua #tratamentodoar #engenharia #reuso #potabilidade #tratamentoquimico” Source: RevenueBase Database · checked Sep 20, 2026
13	Companhia DE Saneamento DO Parana Sanepar	Indirect evidence	Curitiba, BrazilHQ checked Sep 20, 2026	5,001-10,000	64 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
14	BIO G Soluções Inteligentes EM Saneamento	Indirect evidence	Florianópolis, BrazilHQ checked Sep 20, 2026	201-500	52 contacts →
	Indirect evidence “A Bio G Engenharia e Sistemas de Saneamento é uma empresa que surgiu através de incessantes pesquisas e desenvolvimento tecnológico.” Source: RevenueBase Database · checked Sep 20, 2026
15	Celebre Ambiental	Indirect evidence	Barueri, BrazilHQ checked Sep 20, 2026	201-500	46 contacts →
	Indirect evidence “Uma empresa ágil e dinâmica dedicada a prover soluções de engenharia para clientes da iniciativa pública e privada.” Source: RevenueBase Database · checked Sep 20, 2026
16	Alphenz	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 20, 2026	51-200	45 contacts →
	Indirect evidence “A ALPHENZ® é líder no fornecimento de soluções personalizadas para tratamento de água e efluentes há mais de 15 anos, destacando-se pela qualidade e inovação.” Source: RevenueBase Database · checked Sep 20, 2026
17	Ebs- Empresa Brasileira DE Saneamento	Indirect evidence	Joinville, BrazilHQ checked Sep 20, 2026	201-500	38 contacts →
	Indirect evidence “A EBS - Empresa Brasileira de Saneamento, é uma das principais empresas privadas atuantes no setor, e atende os municípios no gerenciamento, operação, manutenção de sistemas de…” Source: RevenueBase Database · checked Sep 20, 2026
18	SUALL	Indirect evidence	Lavrinhas, BrazilHQ checked Sep 20, 2026	51-200	38 contacts →
	Indirect evidence “A Suall é uma importante indústria química especializada em produtos destinados ao tratamento de água.” Source: RevenueBase Database · checked Sep 20, 2026
19	Águas DE SÃO Francisco	Indirect evidence	Barcarena, BrazilHQ checked Sep 20, 2026	51-200	37 contacts →
	Indirect evidence “A Águas de São Francisco é a concessionária responsável pelos serviços de água e tratamento de esgoto do município de Barcarena, no Pará.” Source: RevenueBase Database · checked Sep 20, 2026
20	Hidrodomi	Indirect evidence	Ribeirão Preto, BrazilHQ checked Sep 20, 2026	51-200	36 contacts →
	Indirect evidence “Somos uma indústria de produtos para tratamento de água para consumo humano e animal, processos industriais e desinfecção de alimentos e ambientes.” Source: RevenueBase Database · checked Sep 20, 2026
21	Sultech Water Treatment Systems	Strong evidence	Cachoeirinha, BrazilHQ checked Sep 20, 2026	11-50	31 contacts →
	Strong evidence “A traditional manufacturer and supplier of hospital medical water treatment solutions in southern Brazil, SULTECH specializes in iron and manganese removal, slowdown…” Source: RevenueBase Database · checked Sep 20, 2026
22	CSJ	Indirect evidence	Jundiaí, BrazilHQ checked Sep 20, 2026	51-200	30 contacts →
	Indirect evidence “A Companhia Saneamento de Jundiaí construiu e opera a maior Estação de Tratamento de Esgoto do município, desde 1996.” Source: RevenueBase Database · checked Sep 20, 2026
23	SÃO Gabriel Saneamento	Indirect evidence	São Gabriel, BrazilHQ checked Sep 20, 2026	51-200	30 contacts →
	Indirect evidence “A São Gabriel Saneamento é a concessionária responsável pelo abastecimento de água, coleta e tratamento de esgoto na cidade de São Gabriel, região do Pampa Gaúcho no Rio Grande do…” Source: RevenueBase Database · checked Sep 20, 2026
24	Hidrosan Engenharia	Indirect evidence	São Carlos, BrazilHQ checked Sep 20, 2026	11-50	27 contacts →
	Indirect evidence “Desenvolvemos projetos de estação de tratamento de água e dos resíduos nela gerados, com metodologias de trabalho adequadas a cada cliente, garantindo as melhores soluções…” Source: RevenueBase Database · checked Sep 20, 2026
25	ACN	Indirect evidence	Aquiraz, BrazilHQ checked Sep 20, 2026	11-50	20 contacts →
	Indirect evidence “Fundada há mais de cinco anos, somos uma empresa com foco na prestação de serviços técnicos voltados para o tratamento de água e efluentes.” 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 treatment 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 municipal water treatment companies.
Partial evidence: Its own public description names part of municipal water treatment companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name municipal water treatment 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 285 municipal water treatment companies based in Brazil

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Municipal water treatment companies based in Brazil at a glance

As of Sep 20, 2026

19.1%Verified-email coverage

69.1Average contacts per company

11-50Median size (employees)

11.2%Largest-city concentration · Sao Paulo

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

123

11-50

51-200

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 285 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 treatment 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 “municipal water treatment 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 municipal water treatment 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 municipal water treatment 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, 3,753 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.

Municipal water treatment companies by metro

Municipal water treatment companies in Sao Paulo32

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 treatment 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 municipal water treatment companies are there based in Brazil?

RevenueBase identified 285 municipal water treatment 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 municipal water treatment companies?

Sao Paulo leads with 32 headquartered companies, followed by Recife (7) and Rio De Janeiro (7).

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 3,753 verified decision-maker contacts tracked across these 285 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.