Castilla-La Mancha supports new Tajo‑Segura water rules after Supreme Court upholds transfer

The regional parliament of Castilla‑La Mancha approved a non‑legislative proposal urging Spain’s Ministry for the Ecological Transition to incorporate recent Supreme Court rulings into the Tajo‑Segura water‑transfer regulations. The proposal, backed by the PSOE and opposed by Vox, calls for immediate adoption of the Court’s judgments that confirm the legality of the transfer and set ecological flow minima for the Tajo River, increased flow through Aranjuez and Talavera de la Reina, higher joint storage limits at Entrepeñas and Buendía, and a reduction of overall transfer volumes.

On 13 May, the Supreme Court rejected a legal challenge filed by the Central Union of Irrigators of the Tajo‑Segura Aqueduct, affirming the current hydraulic plan and the progressive ecological flow framework. The decision removes legal obstacles for the ministry to modify exploitation rules, which could cut the water reaching Murcia by up to 50 %. Regional officials, including Development‑Sustainability Counselor Mercedes Gómez, hailed the ruling as a doctrinal precedent that backs the regional government’s defence of Castilla‑La Mancha’s water interests.

The events mark a coordinated political and judicial effort to reshape water allocation in Spain’s central basin.