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Executive overview
Key findings
More than 80%: share of Metropolitan Region drinking water demand supplied by the Maipo River (CR2)
About 28%: share of the Maipo River's water rights owned by Aguas Andinas (company, May 2026)
775.1 million m³: drinking water produced in 2025, with total losses of 28.3%
13,633 km: drinking water network in 2025, alongside 11,045 km of wastewater collection network
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Buyer relevance
Who the report is for
Engineering and construction firms entering Chilean water
See the Santiago West, Santiago South and Fajas de Canales well fields, which add up to 3,190–3,200 L/s, and the Maipo alternative catchment in one place.
Public agencies and basin planners
Compare the SISS tariff regime with the DGA's water rights tools, from scarcity decrees to the 2026 adaptation plan, when planning for the Maipo basin.
Investors and lenders new to Aguas Andinas
Understand the system behind the financials: 2,388,110 customers, a 7.0% cost-of-capital floor and net debt to EBITDA of 3.53x in June 2026.
Water quality and treatment specialists
Track turbidity compliance, which fell to 92.67% in 2025, against the rise in Maipo turbidity events to 27 a year.
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Decision scope
Questions answered
How dependent is Santiago on the Maipo River?
The Maipo meets more than 80% of Metropolitan Region drinking water demand, and groundwater supplied 19% of the drinking water produced in 2025.
Who regulates Aguas Andinas and how often are tariffs reset?
The SISS sets tariffs every five years; the 2025–2030 tariffs were fixed by Decree No. 47 of May 15, 2025.
How large is the network?
Aguas Andinas runs 13,633 km of drinking water network and 11,045 km of wastewater collection network (2025).
How much water is lost?
Total losses were 28.3% in 2025, with real losses in distribution at 21.8%.
How much is being invested?
The company plans CLP 365 billion of tariff-linked projects for 2025–2030, within average annual investment of CLP 200–250 billion.
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Inside the report
Inside the complete report
Executive Overview
1. Water Resource Profile
2. Governance and Institutional Framework
3. Infrastructure and Service Delivery
Strategic Outlook and Opportunities
Source Register
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Public preview
What to watch next
1. Water Resource Profile
El Yeso storage at the end of the 2026–2027 summer; the volume of drought transfers from irrigators; progress of the new well fields (see §3).
2. Governance and Institutional Framework
The ruling in the Retorno Maipo case; the Maipo basin strategic plan; use of water scarcity decrees in the Maipo; preparation of the next tariff process.
3. Infrastructure and Service Delivery
Turbidity compliance and complaint numbers in FY 2026; the pipe replacement rate; objective service quality against the 99.9% goal.
Strategic Outlook and Opportunities
Commissioning of the first Santiago West stage in late 2027; Retorno Maipo litigation; El Yeso storage; FY 2026 capital spending against the CLP 200–250 billion range; the preparation of the next tariff process.
Coverage by company, key resilience assets and Aguas Andinas' service quality record for 2021–2025.
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Included
What you receive
The complete PDF report: 11 pages, 6 sections, 16 tables and a register of 27 sources.
This edition
November 2026, First edition.
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Evidence & method
Evidence and method
The report is built on Aguas Andinas' integrated reports and data tables for 2018 to 2025, its H1 2026 financial filing and 2024–2026 investor presentations, and the sanitation regulator's 2020–2025 tariff study. It adds Chilean water authority, environment ministry and CR2 climate science publications on the Maipo basin, and press reporting on projects and litigation checked in November 2026.
Sources
27 sources, listed in the report's source register. Evidence current to 2 November 2026. Principal data periods: FY 2025 integrated report and data tables (year ended December 31, 2025); H1 2026 results (six months to June 30, 2026); the 2025–2030 tariff period. Project, rating, legal and regulatory status checked on November 2, 2026. All currency is Chilean pesos (CLP) unless stated..
Evidence boundaries
This report uses authoritative source material available at the stated research cutoff. It distinguishes published facts, calculated values and analytical interpretation. No independent modelling is performed. Forward-looking analysis reflects published plans, documented trends and stated uncertainties. It does not constitute legal, financial, investment or engineering advice.
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Lead analyst
Robert C. Brears
Founder, Our Future Water Intelligence
Robert C. Brears is a water-security specialist and author whose work examines utility governance, infrastructure investment, climate resilience and long-term water-system change for executive and policy audiences.
- Decision-focused utility intelligence
- Published water-policy author
- Evidence-grounded system analysis
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Buyer FAQs
Before you purchase
Who can use the report?
Licensed for internal use within one purchasing organization. The PDF and its contents may be shared with colleagues within that organization. External redistribution, resale and public publication are prohibited without permission.
How is the report delivered?
The PDF is available to download immediately after confirmed payment, through our secure delivery system.
Can my organization buy wider access?
Institutional purchasing: For invoice enquiries, multi-organization licensing or broader access requirements, contact Our Future Water Intelligence.
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Water Systems Overview: Aguas Andinas
- Format
- Length
- 11 pages
- Edition
- November 2026, First edition
- Price
- USD 499
11
Report details
Publication details
- Publisher
- Our Future Water Intelligence
- Report family
- Water Utility Intelligence Report
- Edition
- November 2026, First edition
- Format
- Length
- 11 pages
- Reference
- OFW_EXT_WATER_SYSTEMS_OVERVIEW_AGUAS_ANDINAS_14679b6ebb73
- Evidence current to
- 2 November 2026
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