Fundação Rio-Águas

What Fundação Rio-Águas does

Fundação Instituto das Águas do Município do Rio de Janeiro (operating as Rio-Águas) is a municipal government foundation (autarquia) established on June 23, 1998, via Municipal Law No. 2,656, in direct response to a catastrophic 1996 flooding event in the Jacarepaguá watershed. Operating under the Prefeitura da Cidade do Rio de Janeiro, the foundation holds statutory authority for rainwater management, flood prevention and control, urban drainage planning, and the regulation of the sewage concession in the West Zone (Área de Planejamento 5). Its mandate also covers river and channel maintenance, environmental recovery of urban waterways, and oversight of irregular settlements in flood-risk areas.

The foundation executes and operates a portfolio of large-scale civil infrastructure. Core assets include flood control reservoirs (piscinões) totaling 119 million liters of storage in the Grande Tijuca area (Praça da Bandeira 18M liters, Praça Niterói 58M liters combined, Praça Varnhagen 43M liters), and the Rio Joana diversion tunnel — the largest urban drainage tunnel in Brazil at 2,400 meters of tunnel length (3,412 meters total) with a discharge capacity of up to 100 cubic meters per second directly to Guanabara Bay. Active and planned PAC (Programa de Aceleração do Crescimento) projects include Jardim Maravilha (R$340 million, 231 million liters of reservoir capacity, 3.4 km dike), Realengo (R$123.5 million), and the Rio Acari basin intervention (R$430 million). The foundation also serves as the regulatory authority for the Zona Oeste sewage concession operated by Zona Oeste Mais Saneamento, under which coverage expanded from 5% to 60% since 2012. It is increasingly adopting Nature-Based Solutions such as rain gardens as a complement to traditional gray infrastructure.

Rio-Águas does not generate commercial revenue. It is funded through the City of Rio de Janeiro's municipal budget supplemented by federal allocations via the Novo PAC and PAC Pavimentação programs, with Caixa Econômica Federal administering disbursement. Services are provided free of charge to citizens through municipal channels including the 1746 hotline, on-site service requests, and direct execution of neighborhood-level infrastructure works. The foundation also operates digital services such as the Rede de Drenagem application published on the Data.Rio platform, and has received formal LGPD compliance recognition.

Name

Fundação Rio-Águas

Legal name

Fundação Instituto das Águas do Município do Rio de Janeiro

Website

https://fundacaorioaguas.prefeitura.rio

Company type

Private

Founded year

1998

Operating status

Operating

Headcount range

11–50 employees

Short description

Fundação Rio-Águas is a Rio de Janeiro municipal government foundation responsible for rainwater management, flood control, urban drainage, and sewage regulation in the West Zone. It operates major reservoir and tunnel infrastructure while delivering free public services to the city's residents.

Ownership category

akta.pro rank

Product category

Municipal Flood Control and Urban Drainage Services

NAICS

Water, Sewage and Other Systems (2213), Sewage Treatment Facilities (221320), Administration of Air and Water Resource and Solid Waste Management Programs (924110)

SIC

Electric, Gas & Sanitary Services (4900), Sanitary Services (4950), Refuse Systems (4953)

akta.pro primary industry

Detention, Retention & Storage Systems (Ponds, Tanks, Vaults) (EUANAEAD)

akta.pro secondary industries

Combined Sewer Overflow (CSO) Control & Compliance (Storage, Separation, Treatment) (EUANAEAG), Stormwater Management & MS4 Compliance Services (BPALAMAL), Water & Wastewater Compliance (NPDES/Stormwater, Pretreatment, Drinking Water/SDWA) (EUAHABAB), Water Supply & Wastewater Utilities Administration (BPAIACAG)

Keywords

• Urban flood control
• Stormwater management
• Municipal drainage infrastructure
• Sewage regulation
• Sanitation 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

Personnel, Infrastructure, Operations, Technology or R&D

Revenue model

1. Municipal Government Budget: Fundação Rio-Águas operates as a municipal government foundation funded by the City of Rio de Janeiro's municipal budget, with additional federal government funding through programs such as Novo PAC and PAC Pavimentação.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Fundação Rio-Águas is the municipal government foundation of Rio de Janeiro responsible for managing rainwater, preventing and controlling urban flooding, and regulating the sewage concession in the West Zone. It operates flood-control reservoirs (piscinões), the Rio Joana drainage tunnel, river channelization works, sanitation regulation for AP5, and digital drainage information applications, delivering these public services free of charge to citizens.

Product overview

Fundação Rio-Águas is a municipal government foundation (autarquia) that functions as both an infrastructure execution agency and a sanitation regulator. Its core product portfolio includes urban drainage and flood control infrastructure (reservoirs, tunnels, channelization), sanitation regulation for the West Zone concession, digital services (Rede de Drenagem app), and the Bairro Maravilha urbanization program. The organization operates major flood control systems including the Grande Tijuca reservoir network (Praça da Bandeira, Varnhagen, Niterói), executes the PAC program infrastructure projects, and regulates the AP5 sanitation concession. Rio-Águas does not offer a commercial SaaS product but rather provides public services and infrastructure for the municipality of Rio de Janeiro.

Differentiator

Problem solved

Functional benefit

Products and services

• Drainage and Flood Control Infrastructure Core municipal service managing rainwater handling, flood prevention and control, and urban sanitation for Rio de Janeiro, operating reservoirs (piscinões) and drainage systems across the city, including the Praça da Bandeira, Varnhagen, and Niterói reservoirs in Grande Tijuca.
• Rio Joana Tunnel Diversion Urban drainage tunnel system diverting Rio Joana waters directly to Guanabara Bay. With 3,412 meters total length including 2,400 meters of tunnel, it is the largest urban drainage tunnel in Brazil, controlling flood waters up to 100 cubic meters per second.
• PAC Realengo - Piscinão Reservoir Flood control reservoir project in Realengo, West Zone, with capacity to store approximately 20 million liters of water. The reservoir will control Rio Piraquara waters to prevent overflows and flooding.
• PAC Jardim Maravilha Major flood control and urbanization program in Jardim Maravilha, including a 3.4-kilometer dike along Rio Cabuçu-Piraquê, three large open reservoirs with total capacity of 231 million liters, and urban infrastructure for approximately 30,000 residents.
• Bacia do Rio Acari Intervention Plan Comprehensive flood intervention plan for the Rio Acari Basin, including river widening to approximately 50 meters width, desilting services, and civil works totaling R$ 430 million investment to benefit around 80,000 people.
• Sanitation Regulation (AP5 - Zona Oeste) Regulation and oversight of the municipal sanitation concession contract in Planning Area 5 (AP5), corresponding to Rio's West Zone, ensuring tariff control and service quality since 2012 for approximately 1 million residents.
• Saneando Santa Cruz Program Sanitation program constructing sewage collection and treatment infrastructure in the Santa Cruz area, including a large-scale wastewater treatment plant serving 150,000 people.
• Bairro Maravilha Program Municipal urbanization program implementing drainage, sewage, water supply, paving, and sidewalks in underserved areas of the North and West zones of Rio de Janeiro, executed by Rio-Águas.
• Program of Environmental Recovery of Jacarepaguá Basin Environmental recovery program benefiting 14 rivers in the Jacarepaguá region, including channeling and flood control works with total investment of R$ 364.9 million.
• Rede de Drenagem (Drainage Network Application) Digital application that provides public access to drainage network data and maps of Rio de Janeiro, developed by Rio-Águas and available through the Data.Rio platform of the Instituto Pereira Passos.

Quantifiable outcome

• Tariff 22% lower than other areas of the city for sewage services in AP5
• +5 more outcomes

Named customers3 records

Segments2 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Two partnerships are on record, tiered core and minor.

• Zona Oeste Mais SaneamentocoreStrategic or Co-development Partner · 23 April 2026Concessionaire responsible for sewage collection and treatment in Zona Oeste (AP5). Rio-Águas serves as regulatory and oversight body for the concession, which has expanded sewage coverage from 5% to 60% since 2012, serving approximately 1 million residents.
• Associação Brasileira de Agências Reguladoras (ABAR)minorStrategic or Co-development Partner · 26 November 2025Rio-Águas participated in the XIV Brazilian Regulation Congress organized by ABAR, sharing regulatory experience and presenting technical papers on sanitation regulation and water quality monitoring in Zona Oeste. The congress is considered the largest regulatory event in Latin America.

Scale indicators13 records

Recent moves6 records

Expansion highlights5 records

Regional players

• Águas do Rio: Private water/sewage concessionaire operating in multiple areas of Rio de Janeiro state outside AP5. Comparable to Rio-Águas because it operates complementary concessions in the same municipality and shares the local regulatory and operational environment for urban sanitation.
• Iguá Saneamento: Brazilian private water and sanitation concessionaire operating concessions across multiple states. Comparable to Rio-Águas because Iguá operates concessions and contracted sanitation services under regulatory oversight, sharing the Brazilian regulatory context for water/sewage tariffs and service quality KPIs.
• Aegea Saneamento: One of Brazil's largest private water and sanitation operators, holding concessions in multiple states. Comparable to Rio-Águas because Aegea operates as a concessionaire in Brazil's regulated sanitation market, often working alongside municipal regulators like Rio-Águas for service oversight and tariff negotiation.

Direct peers

• PUB, Singapore's National Water Agency: Singapore's integrated national water agency managing stormwater collection, drainage, flood management, and water reclamation. Comparable to Rio-Águas because PUB operates an integrated urban water mandate with strong emphasis on stormwater drainage and flood resilience, supported by public infrastructure investment and digital monitoring systems.
• NYC Department of Environmental Protection: NYC's municipal agency responsible for water supply, wastewater treatment, and stormwater management including flood control infrastructure. The closest international functional peer to Rio-Águas because both agencies manage urban drainage, combined sewer overflow challenges, and flood-resilience infrastructure under a municipal government mandate.
• Secretaria Municipal de Infraestrutura e Habitação de São Paulo (SIURB): São Paulo's municipal secretariat responsible for urban infrastructure including drainage and flood control. Comparable to Rio-Águas as a direct municipal-level peer delivering stormwater drainage, canalization, and flood control programs in Brazil's largest city.

Broad incumbents

• SABESP (Companhia de Saneamento Básico do Estado de São Paulo): Brazil's largest state-level water and sanitation utility, providing water and sewage services across São Paulo state. Comparable to Rio-Águas as a major Brazilian sanitation operator/regulator with overlapping scope in urban water infrastructure, though SABESP operates as a state-owned company with commercial revenue while Rio-Águas is a municipal foundation.
• HOFOR (Hofor Forsyning): Municipal utility in Copenhagen handling water supply, wastewater, stormwater, and district heating. Comparable to Rio-Águas as a multi-utility municipal entity with strong climate adaptation and cloudburst management experience relevant to urban flood resilience.
• Thames Water Utilities: UK's largest water and wastewater utility, operating drainage and sewage treatment across Greater London. Comparable to Rio-Águas in the urban drainage and CSO management function, though Thames Water is a regulated private monopoly with very different governance from a municipal foundation.
• CEDAE (Companhia Estadual de Águas e Esgoto do Rio de Janeiro): Rio de Janeiro state-level water and wastewater utility serving as the bulk water provider across the state. Comparable to Rio-Águas because both operate within Rio's water/sewage value chain, though CEDAE focuses on water supply and bulk treatment while Rio-Águas handles stormwater/flood control and AP5 concession regulation.

Market position

Strengths2 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/Prefeitura_Rio
• YouTubeyoutube.com/channel/UCBf3rlo_iHd4kRePPhFXDUQ
• Facebookfacebook.com/PrefeituradoRio
• LinkedInlinkedin.com/company/fundacao-rio-aguas
• Instagraminstagram.com/prefeitura_rio

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

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M&A

Investments

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Frequently asked questions about Fundação Rio-Águas