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On August 4, 2026, the “Decree issuing the Regulations for the Determination and Payment of the Guarantee Fee to Prevent the Expiration of National Water Rights” (Decreto por el que se expide el Reglamento para la Determinación y Pago de la Cuota de Garantía de No Caducidad de Derechos de Aguas Nacionales) (the “Regulations”) was published in the Federal Official Gazette (Diario Oficial de la Federación, “DOF”).

The purpose of the Regulations is to update the procedure under which concession holders and assignees may pay a guarantee fee to prevent the partial or total expiration of volumes of national waters that have not been exploited, used, or utilized for two (2) consecutive years and that are subject to the grounds for expiration set forth in paragraph 3 of section VI of Article 29 BIS 3 of the National Water Law (Ley de Aguas Nacionales).