Company lists · Data refreshed September 2026
Top 25 Municipal water treatment providers based in Brazil
RevenueBase identified 274 municipal water treatment providers headquartered in Brazil as of September 2026 and tracks 20,886 professional contacts across them, including 3,709 with verified work emails. Sao Paulo is the largest hub.
This list covers municipal water treatment providers 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.
The 25 largest municipal water treatment providers based in Brazil
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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, 2026Thanks. The Data Team will review it. | |||||
| 5 | 179 contacts → | ||||
Indirect evidence “Há 60 anos, a Cesama é a empresa pública responsável pelo fornecimento de água e coleta de esgoto na cidade de Juiz de Fora - MG.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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, 2026Thanks. The Data Team will review it. | |||||
| 7 | 110 contacts → | ||||
Indirect evidence “Na Projesan, avançamos a química de quem trata água todos os dias.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 105 contacts → | ||||
Partial evidence “A Companhia Operacional de Desenvolvimento, Saneamento e Ações Urbanas (Codau) é uma autarquia municipal fundada em 7 de junho de 1966, no município de Uberaba.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 104 contacts → | ||||
Indirect evidence “Empresa de engenharia consultiva e executiva especializada na área de saneamento básico.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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, 2026Thanks. The Data Team will review it. | |||||
| 12 | 69 contacts → | ||||
Indirect evidence “qualidadedoar #analisequimica #efluentes #tratamentodeagua #tratamentodoar #engenharia #reuso #potabilidade #tratamentoquimico” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 64 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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, 2026Thanks. The Data Team will review it. | |||||
| 16 | 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, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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, 2026Thanks. The Data Team will review it. | |||||
| 20 | 37 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 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, 2026Thanks. The Data Team will review it. | |||||
| 22 | 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, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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, 2026Thanks. The Data Team will review it. | |||||
| 24 | 28 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 28 contacts → | ||||
Indirect evidence “Companhia de águas e esgotos de roraima - caer” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
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 providers. 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 providers.
- Partial evidence
- Its own public description names part of municipal water treatment providers, 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 providers. 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 274 municipal water treatment providers based in Brazil
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Municipal water treatment providers based in Brazil at a glance
As of Sep 20, 2026Companies by employee count
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 274 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 providers, 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 providers”. 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 providers), 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 providers, 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, 3,709 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.
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 providers, 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 providers are there based in Brazil?
RevenueBase identified 274 municipal water treatment providers 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 providers?
Sao Paulo leads with 24 headquartered companies, followed by Rio De Janeiro (7) and Curitiba (6).
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 3,709 verified decision-maker contacts tracked across these 274 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.
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