Ambient light for the new physicochemical treatment at the La Cartuja WWTP

The Aragonese Institute of Environmental Management (INAGA) has issued the environmental impact report for the construction project of the new physicochemical treatment at the La Cartuja WWTP, in the municipality of Zaragoza, and has decided not to subject it to the ordinary environmental impact assessment procedure. The resolution, dated July 7, 2026, was made known through an announcement published in the Official Gazette of Aragon number 172, dated September 4, 2026, with reference BOA20260904012.

The project, requested by Pirinea Desarrollo Rural, SL and promoted by Veolia Water Solutions & Technologies SASU, is being processed under file number 500201/01/2025/12748. The publication is ordered in accordance with Article 37.4 of Law 11/2014, of December 4, on Environmental Prevention and Protection of Aragon, and the announcement corresponds to the Department of Environment and Tourism, within section V of Announcements.

Environmental decision and project scope

The INAGA resolution concludes that the action does not require an ordinary environmental impact assessment and, instead, a corresponding favorable environmental impact report is issued. The objective is the construction of a new physicochemical treatment at the La Cartuja wastewater treatment plant, a key sanitation infrastructure for the Aragonese capital.

The basic data of the file are as follows:

• File number: 500201/01/2025/12748.
• Promoter: Veolia Water Solutions & Technologies SASU.
• Applicant: Pirinea Desarrollo Rural, SL.
• Affected municipalities: Zaragoza (Zaragoza).
• Description: construction project of the new physicochemical treatment of the La Cartuja WWTP.

Consultation and signature of the announcement

The complete information of the resolution can be consulted on the document verification portal of the Aragonese administration, using the Secure Verification Code CSVO81PVAS1VSBLYCREG. The announcement was signed in Zaragoza on July 31, 2026, by Juan Enrique Net Ortega, head of Technical Area II of Natural Environment of INAGA.

Relevance for the city

The modernization of the La Cartuja WWTP with a physicochemical treatment reinforces the wastewater treatment capacity of Zaragoza, improving the quality of the discharge and the protection of the receiving environment. By being exempt from the ordinary environmental assessment, the project streamlines its administrative processing, bringing the execution of a relevant sanitation infrastructure for the Aragonese capital and its surroundings closer.

Source: Official Gazette of Aragon, number 172, of September 4, 2026, section V (Announcements), Department of Environment and Tourism (official reference: BOA20260904012).