Circular Water Infrastructure for Northern Chile (IDBI-15803-01)

Regions
  • Latin America and Caribbean
Geographic location where the impacts of the investment may be experienced.
Countries
  • Chile
Geographic location where the impacts of the investment may be experienced.
Specific Location
Antofagasta Region
Whenever identified, the area within countries where the impacts of the investment may be experienced. Exact locations of projects may not be identified fully or at all in project documents. Please review updated project documents and community-led assessments.
Financial Institutions
  • IDB Invest (IDBI)
International, regional and national development finance institutions. Many of these banks have a public interest mission, such as poverty reduction.
Project Status
Hold
Stage of the project cycle. Stages vary by development bank and can include: pending, approval, implementation, and closed or completed.
Bank Risk Rating
B
Environmental and social categorization assessed by the development bank as a measure of the planned project’s environmental and social impacts. A higher risk rating may require more due diligence to limit or avoid harm to people and the environment. For example, "A" or "B" are risk categories where "A" represents the highest amount of risk. Results will include projects that specifically recorded a rating, all other projects are marked ‘U’ for "Undisclosed."
Voting Date
Apr 20, 2026
Date when project documentation and funding is reviewed by the Board for consideration and approval. Some development banks will state a "board date" or "decision date." When funding approval is obtained, the legal documents are accepted and signed, the implementation phase begins.
Borrower
Sacyr Agua SL
A public entity (government or state-owned) provided with funds or financial support to manage and/or implement a project.
Sectors
  • Infrastructure
  • Mining
  • Water and Sanitation
The service or industry focus of the investment. A project can have several sectors.
Investment Type(s)
Loan
The categories of the bank investment: loan, grant, guarantee, technical assistance, advisory services, equity and fund.
Investment Amount (USD)
$ 150.00 million
Value listed on project documents at time of disclosure. If necessary, this amount is converted to USD ($) on the date of disclosure. Please review updated project documents for more information.
Loan Amount (USD)
$ 150.00 million
Value listed on project documents at time of disclosure. If necessary, this amount is converted to USD ($) on the date of disclosure. Please review updated project documents for more information.
Bank Documents
Primary Source

Original disclosure @ IDBI website

Updated in EWS Apr 9, 2026

Disclosed by Bank Mar 6, 2026

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Project Description
If provided by the financial institution, the Early Warning System Team writes a short summary describing the purported development objective of the project and project components. Review the complete project documentation for a detailed description.

According to the IDB Invest, the objective of the project is to increase water availability in the Antofagasta Region through the treatment and reuse of wastewater, supporting sustainable urban and industrial development and promoting more efficient, resilient, and circular water resource management.

The Environmental and Social Review Summary states that:

La Empresa Concesionaria de Servicios de Saneamiento (“ECCONSA”), a través de un proceso licitatorio público internacional, ha adjudicado a la firma SACYR Agua (el “Cliente”, la “Empresa” o “SACYR”) el desarrollo, la construcción y operación del proyecto “Nueva Planta de Tratamiento de Agua Servidas para Reúso de Antofagasta” (el “Proyecto”), que será ubicada en Antofagasta, Chile. Esta nueva facilidad prevé la reutilización de los efluentes de la nueva Planta de Tratamiento de Aguas Servidas (“PTAS”) a ser construida, para entregarlos como insumo a distintas industrias de la zona, principalmente del sector minero.

El Proyecto contempla la construcción de: i) un sistema de elevación de agua pretratada desde la ciudad de Antofagasta hasta la nueva PTAS, la cual estará ubicada en el sector del Salar del Carmen; y ii) dos sistemas de conducción de aguas servidas tratadas: (a) uno soterrado hacia el sector de La Negra, con una longitud de 26.788 m, utilizando para el efecto servidumbres y la faja fiscal de las rutas viales, y (b) otro hacia el sector de Mantos Blancos, con una longitud de 26.605 m, que también utilizará la faja fiscal de las rutas viales o áreas intervenidas con caminos secundarios. Por sus características de reutilización de aguas servidas, el Proyecto no prevé evacuación de efluente tratado a ningún cuerpo receptor.

El sistema de tratamiento de las aguas previsto para el Proyecto utilizará la tecnología de lodos activados para el tratamiento de las aguas pretratadas. La PTAS tendrá una capacidad de 900 l/s y
diseños preparados para una futura expansión para poder manejar 1200 l/s. Luego de pasar por cuatro plantas elevadoras1 (“PE”) para vencer la diferencia de nivel entre el punto de pretratamiento en la ciudad de Antofagasta y la futura PTAS, las aguas tratadas serán conducidas y almacenadas en un estanque de 2.000 m3 de capacidad que estará ubicado en la misma PTAS. Desde allí serán distribuidas hacia los sectores de La Negra y de Mantos Blancos para su consumo final.

La conducción e impulsión hacia el sector La Negra será mediante única planta elevadora ubicada a un costado del estanque de 2.000 m3 de agua tratada, la que contará con bombas tipo booster con una capacidad total de 300 l/s, en la modalidad de operación 3+1, es decir tres bombas de capacidad 150 l/s cada una y una en modo espera (stand by). La conducción será mediante tuberías soterradas de polietileno de alta densidad (“HDPE”) y 710 mm de diámetro.

Investment Description
Here you can find a list of individual development financial institutions that finance the project.
Private Actors Description
A Private Actor is a non-governmental body or entity that is the borrower or client of a development project, which can include corporations, private equity and banks. This describes the private actors and their roles in relation to the project, when private actor information is disclosed or has been further researched.

As stated by Bloomberg, Sacyr Agua SL treats and supplies water. The Company provides water desalination and potabilization, sewer inspection, wastewater treatment, and recycling.

Private Actor 1 Private Actor 1 Role Private Actor 1 Sector Relation Private Actor 2 Private Actor 2 Role Private Actor 2 Sector
Sacyr SA Parent Company Infrastructure owns Sacyr Agua SL Client Water and Sanitation

Contact Information
This section aims to support the local communities and local CSO to get to know which stakeholders are involved in a project with their roles and responsibilities. If available, there may be a complaint office for the respective bank which operates independently to receive and determine violations in policy and practice. Independent Accountability Mechanisms receive and respond to complaints. Most Independent Accountability Mechanisms offer two functions for addressing complaints: dispute resolution and compliance review.

Client - Sacyr Agua SL:

Phone: +56 600 300 2600
Address: Av. Isidora Goyenechea, 2800
Email: lmtorre@sacyr.com
Website: https://sacyragua.com/en/home 

ACCESS TO INFORMATION

You can submit a request for information disclosure at: https://www.iadb.org/en/access-information/information-request

ACCOUNTABILITY MECHANISM OF IDB / IDB INVEST

The Independent Consultation and Investigation Mechanism (MICI) is the independent complaint mechanism and fact-finding body for people who have been or are likely to be adversely affected by an Inter-American Development Bank (IDB) or Inter-American Investment Corporation (IDB Invest)-funded project. If you submit a complaint to MICI, they may assist you in addressing the problems you raised through a dispute-resolution process with those implementing the project and/or through an investigation to assess whether the IDB or IDB Invest is following its own policies for preventing or mitigating harm to people or the environment. You can submit a complaint by sending an email to MICI@iadb.org. You can learn more about the MICI and how to file a complaint at http://www.iadb.org/en/mici/mici,1752.html (in English) or http://www.iadb.org/es/mici/mici,1752.html (Spanish).

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