Zona Oeste Mais Saneamento

What Zona Oeste Mais Saneamento does

Zona Oeste Mais Saneamento is a Brazilian sanitation concessionaire (legal entity F.A.B Zona Oeste S/A, CNPJ 14.863.079/0001-99) established in 2012 to provide sewage collection and treatment services across the AP-5 (Área de Planejamento 5) region of Rio de Janeiro's western zone. The company operates 10 sewage systems covering 24 neighborhoods and serving approximately 1.8 million residents, with cumulative investment of nearly R$1 billion. Water supply services in the same region are managed separately by Rio+Saneamento. The company is jointly operated by BRK Ambiental and Grupo Águas do Brasil under Brookfield Business Partners LP.

The business operates on a regulated utility concession model with publicly disclosed tariff structures. Customers access services through a multi-channel platform consisting of four physical service centers (Bangu, Campo Grande, Santa Cruz, Sepetiba), a digital self-service portal (Agência Virtual), a 24-hour 0800 telephone line, WhatsApp, chat support, and scheduled in-person appointments. Supporting products include automatic debit enrollment, email billing, consumption history, ownership transfer processing, and the SORTE NA CONTA promotional loyalty program.

The company is privately held as a Sociedade Anônima (S.A.) with no public equity listing. It has accessed debt capital markets through at least seven debenture issuances, with the most recent (7th) dated February 2025 and guaranteed by BRK Ambiental Participações S.A. and Saneamento Ambiental Águas do Brasil S.A. The headquarters is located at Rua Nazaré, Deodoro, CEP 21.615-340 in Rio de Janeiro, Brazil, and the company employs approximately 402 people.

Name

Zona Oeste Mais Saneamento

Legal name

F.A.B ZONA OESTE S/A

Website

https://zonaoestemais.com.br

Company type

Private

Operating status

Operating

Headcount range

251–500 employees

Short description

Zona Oeste Mais Saneamento is a Brazilian sanitation concessionaire providing sewage collection and treatment services to 1.8 million residents across 24 neighborhoods in Rio de Janeiro's AP-5 western zone, operated jointly by BRK Ambiental and Grupo Águas do Brasil under Brookfield Business Partners LP.

Ownership category

akta.pro rank

Product category

Sanitation Services

NAICS

Sewage Treatment Facilities (221320)

SIC

Sanitary Services (4950)

akta.pro primary industry

Municipal Wastewater Collection (Sewer Networks) (BPALAMAA)

Keywords

• Sewage collection services
• Wastewater treatment systems
• Sanitation concessionaire
• Sewage infrastructure
• Water utility services

Headquarters

HQ city

Rio de Janeiro

HQ country

Brazil

HQ region

Latin America

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Infrastructure, Operations, Personnel, Technology or R&D

Distribution channels3 records

Marketing channels2 records

Core offering

Zona Oeste Mais Saneamento operates as the sewage sanitation concessionaire for the AP-5 region (Zona Oeste) of Rio de Janeiro, providing sewage collection and treatment services across 24 neighborhoods through 10 dedicated sewage systems serving approximately 1.8 million residents. The company also runs commercial management activities — meter reading, bill issuance, and collection — and supports customers through a digital platform, physical service centers, telephone, WhatsApp, and chat channels.

Product overview

Zona Oeste Mais Saneamento operates a unified customer service and sewage treatment platform for the AP-5 area of Rio de Janeiro's West Zone. The core offering consists of sewage collection and treatment services across 24 neighborhoods serving 1.8 million residents, managed through 10 sewage systems. The company provides a digital platform (Plataforma Zona Oeste Mais Saneamento) through which customers access account services including 2ª Via de Fatura (second bill copies), Histórico de Consumo (consumption history), Débito Automático (automatic debit), Conta por E-mail (email billing), Troca de Titularidade (ownership changes), and Chat de Atendimento (real-time chat support). Supporting services include appointment scheduling, the SORTE NA CONTA promotional lottery, and the Qualifica Mais professional qualification program. The company is a joint venture between BRK Ambiental and Grupo Águas do Brasil, operating under Brookfield Business Partners LP.

Differentiator

Problem solved

Functional benefit

Products and services

• Saneamento de Esgoto (Sewage Sanitation Services)

Segments1 record

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Four partnerships are on record, tiered minor and core.

• Pentágono S.A. Distribuidora de Títulos e Valores MobiliáriosminorOthers · 13 February 2025Acts as Fiduciary Agent (Agente Fiduciário) representing the community of Debenture holders for the 7th issuance of debentures by F.AB. Zona Oeste S.A.
• BRK AmbientalcoreStrategic or Co-development PartnerBRK Ambiental is one of the parent companies that constituted Zona Oeste Mais Saneamento for providing sewage sanitation services in the AP-5 region of Rio de Janeiro.
• Grupo Águas do BrasilcoreStrategic or Co-development PartnerGrupo Águas do Brasil is one of the parent companies that constituted Zona Oeste Mais Saneamento for providing sewage sanitation services in the AP-5 region of Rio de Janeiro.
• Rio+SaneamentocoreOthersRio+Saneamento is the concessionaire responsible for water supply services in the AP-5 region. Zona Oeste Mais Saneamento handles sewage services while water supply is managed separately by Rio+Saneamento.

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Sanepar (Companhia de Saneamento do Paraná): Sanepar is the mixed-capital water and sewage utility serving Paraná state. While much larger in scale and state-owned, it offers a directly comparable regulated water/sewage concession operating model with the same end-customer segments.
• Sabesp (Companhia de Saneamento Básico do Estado de São Paulo): Sabesp is the state-level water and sewage utility serving São Paulo, recently partially privatized. It operates at far greater scale than Zona Oeste Mais but offers a comparable regulated water/sewage service model with the same underlying end-customer economics.
• Copasa (Companhia de Saneamento de Minas Gerais): Copasa is the state-level water and sewage utility for Minas Gerais. Despite state-owned status and broader geography, it is comparable in business model (regulated municipal water/sewage services, regulated tariffs, residential + commercial customer base).
• Embasa (Empresa Baiana de Águas e Saneamento): Embasa is the state-level sanitation utility serving Bahia. It operates regulated water and sewage services to residential and commercial customers, making it a broad comparable for Brazilian municipal sanitation concession operations.

Direct peers

• Aegea Saneamento: Aegea is one of Brazil's largest private-sector water and sewage utilities, operating numerous concessions across multiple states. It is a direct comparable as a private, multi-concession sanitation operator backed by Itaúsa, serving similar municipal customers with similar regulated tariff models.
• Rio+Saneamento: Rio+Saneamento handles water supply for the same AP-5 region where Zona Oeste Mais handles sewage. Operated under a separate concession, it is the closest geographic and customer-base peer, sharing the exact same catchment area and customer billing relationship.
• Iguá Saneamento: Iguá is a Brazilian private-sector water and sewage utility operating multiple concessions. Backed by IG4 Capital, it shares the same PE-backed concession model, regulated tariff structure, and target customer base (municipal end-users).
• BRK Ambiental: BRK Ambiental is one of Zona Oeste Mais's parent companies and itself operates numerous water and sewage concessions across Brazil. As a Brookfield portfolio company providing identical regulated sanitation services, it is the closest operational and structural peer.
• Águas do Brasil (Grupo): Grupo Águas do Brasil is the other parent of Zona Oeste Mais and operates various water and sewage concessions in Brazil. As a direct shareholder and operator of comparable concessions, it is a structural and operational peer.
• GS Inima Brasil: GS Inima is a private-sector water and wastewater utility operating multiple concessions in Brazil, often backed by Spanish parent GS Inima. Comparable in scale, target market, and concession-based regulated business model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com.br/zonaoestemais
• Facebookfacebook.com/zonaoestemais
• LinkedInlinkedin.com/company/zonaoestemais
• Instagraminstagram.com/zonaoestemais_oficial

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Zona Oeste Mais Saneamento