Chile’s Sanitation regulatory framework is proven, stable and transparent. It has been in place for more than 25 years.
The Superintendence of Sanitation Services (SISS) acts as the regulator counterpart in tariff setting process, which lasts 1 year

• Tariffs are reset every five years, based on an objective and technical model:
• Tariffs are calculated based on long term total costs of a model company
• Company and regulator have equal roles in the tariff calculation process
• Discrepancies are solved by an independent experts committee
• Minimum real return on assets of 7% after taxes
• Automatic interim adjustments linked to polynomials based on CPI and WPI indexes

There are very low delinquency levels due to the legal empowerment to disconnect clients
The government provides subsidies for low-income clients (18% of clients)
The regulatory framework of the Chilean water industry has been fundamental to the development of the sector.

The Chilean sanitation industry is dominated by privately-held operators. 96% of clients are served by private operators. Aguas Andinas and its subsidiaries have 40% market share by clients through indefinite concessions.

The Company shows no change in its market share as it has no competition in its concession areas due to the nature of its services and current legislation.

Aguas Andinas S.A. provides a 100% coverage in water, 98.9% in sewage collection and 100% in sewage treatment in the Santiago basin.

Aguas Cordillera S.A. provides a 100% coverage in water, 99.0% in sewage collection and 100% in sewage treatment.

Aguas Manquehue S.A. provides a 100% coverage in water, 99.5% in sewage collection and 100% in sewage treatment.

Information updated as of December 31, 2023.