Operations with Common Related Parties Policy

The purpose of this Operations with Common Related Parties Policy is to establish a key mechanism/tool to enable to know, approve and execute operations between related parties (hereinafter, “RPO”) that are framed within the ordinary business of Agua Andinas in a quick and efficient manner, reserving to the examination and prior report of the Directors' Committee and the knowledge of the Board of Directors, operations that are not recurring or ordinary for the Company (which must follow the requirements and procedure of Article 147 of the LSA).

Within Aguas Andinas' line of business, among the activities that are habitual, ordinary and/or recurring, are included all those related to the corporate purpose defined in its bylaws, that is, “to produce and distribute drinking water; collect, treat and dispose of wastewater; as well as perform all those services related to such activities, in the manner and conditions established in Decree with Force of Law No. 382 of the Ministry of Public Works of 1988, General Law of Sanitation Services, and other applicable regulations”.

It will be considered the following ordinary operations related to industry and sanitation services (collectively, the “Usual Operations”):

1. In the present category, the Company's Board of Directors took into consideration different recurring operations leading to the acquisition of all kinds of goods or contracting of services indispensable for the fulfillment and integral development of AA's social object, among which are:

• Contracts for the supply, purchase and sale or exchange of products, materials and supplies.
• Contracts for the supply of sanitation services.
• Contracts for the supply of services and legal advices.
• Contracts for interconnection between sanitation companies.
• Acquisition, sale, lease and loan of machinery, equipment and technical services, works, maintenance and operation of sanitation infrastructure, meter reading services and distribution of bills, commercial services, customer service, collection and sales, logistics contracts, and construction and maintenance of water supply systems.
• Acquisition of software and technology licenses.
• Contracting of technology systems and/or technological systems services.
• Construction contracts.
• Insurance contracts.
• Electricity supply contracts.
• Compensation with electric companies and water users' organizations for the purchase, lease, redistribution of water flows, and in general, the management and use of these and their modifications.
• Agreements subscribed with water user organizations for the purchase, lease, redistribution of water flows, and in general, the management and utilization of these and their modifications.

2. In the present category, the Company's Board of Directors took into consideration certain complementary operations to the sanitation service, equally necessary and indispensable to ensure the integral fulfillment of AA's social purpose, including the following:

• Research, development and specialized innovation projects related to sanitation services.
• Negotiations, agreements or operations, acts or contracts preparatory for the development of a specific operation related to the corporate purpose, including: understanding agreements, confidentiality agreements, promises, among others, and the acts or contracts through which the indicated operations are carried out. Likewise, the procedures in which the Company acts as an intermediary of a related company.
• Acts or contracts tending to the formation of consortia, legal entities with or without profit or non-profit purposes, agreements of partners or shareholders, joint operation agreements, joint ventures and other agreements with similar purposes.
• Judicial and extrajudicial transactions, settlements, conciliations, waivers, resignations, settlements, as well as any other means of conflict resolution.
• Training of employees and executives.
• Technical support services and/or technological support in specific areas of the Company's management and operation, based on the line of business and experience in the matter.

This updated version of the Policy must be published on the Company’s website (https://www.aguasandinas.cl/) and made available to shareholders at the Company’s offices.

In accordance with the provisions of Article 147 of Law No. 18,046 about Corporations (“LSA”) and the stipulations of NCG No. 501 published by the Financial Market Commission (“FMC”) on January 8th, 2024, the Board of Directors of AGUAS ANDINAS S.A. (hereinafter, indistinctly, the “Company” or “AA”), in a session held on July 17th, 2024, agreed to modify the General Policy for Related Party Transactions of the Company dated July 17th, 2024. (hereinafter, indistinctly, the “Company” or “AA”) in a meeting held on July 17th, 2024 agreed to modify the Company's General Policy for Regular Operations with Related Parties dated July 27th, 2010, by the new Policy for Regular Operations with Related Parties, according to the terms set forth below (hereinafter, the "Policy").

Likewise, the referred resolution of the Board of Directors that established the modification of the Policy has the favorable pronouncement of the Company's Directors' Committee, and was properly informed as an essential fact to the CMF on August 30th, 2024 in accordance with the provisions of Article 9 of Law No. 18,045 of the Securities Market Law.

Santiago de Chile, August 30, 2024.

 Operations period (spanish version) 01/01/2025 al 30/06/2025