These projects, located in Madrid, Huelva and La Orotava (Tenerife), serve a population of more than 1.6 million inhabitants.

Sacyr Water has been awarded three new contracts in Spain, totaling €84 million. The contracts include upgrading the Huelva Wastewater Treatment Plant (WWTP), renewing the operation of the La Gavia WWTP in Madrid, and constructing a new WWTP in the Orotava Valley, Tenerife.

The Regional Government of Andalusia has awarded a joint venture, comprised of Sacyr Ingeniería e Infraestructuras (40%), Sacyr Water (40%), and UC10 (20%), a €36.3 million contract to upgrade and adapt the Huelva WWTP. The project is expected to take 27 months. The plant is designed to serve an estimated population of 180,000.

The contract includes expanding the pumping station, converting existing biological reactors, adding an additional sludge line, and renovating equipment and pipes, among other improvements. It also involves separating the impulsion collector, as well as upgrading the main pumping system and the pipeline that carries wastewater from the pumping station to the WWTP.

La Gavia
Separately, Canal de Isabel II has awarded Sacyr Water a €30.4 million contract (Lot 2) for the operation and maintenance of the La Gavia WWTP in Madrid over four years. This plant is designed to treat wastewater for a population of more than 1.35 million.

The plant has an average treatment capacity of 2 m3/sec (172,800 m3/day) and processes wastewater from the two La Gavia collectors (Gavia I and Gavia II), as well as excess water from the La China treatment plant (South Collector).

The facility utilizes tertiary treatment to convert all treated water into reclaimed water, allowing for the discharge of high-quality water into the Manzanares River. A portion of this water is reused for irrigating green spaces and street cleaning.

The infrastructure includes facilities that produce green electricity from liquid waste generated by residents. This waste is treated and converted into biogas.

Orotava Valley, Tenerife
The Tenerife Water Council has awarded a joint venture consisting of Sacyr Ingeniería and Sacyr Water a €17.5 million contract to construct the new Regional WWTP in the Orotava Valley, with a completion timeframe of 37 months. This plant is designed to serve a population of over 100,000.

The new WWTP will have a secondary treatment capacity of 10,000 m³/day, employing membrane bioreactor (MBR) technology and sludge treatment. The project includes pre-treatment designed for a flow rate of 20,000 m³/day, ensuring compatibility with future expansions.

About Sacyr Water

Sacyr Water is a leader in desalination and integrated water cycle management. With 30 years of experience, it has become one of the world’s top 10 companies in installed capacity and the leading desalination operator in Spain.

In 2025, Sacyr Water was awarded the concession and expansion of the largest wastewater reuse plant in Latin America, located in Antofagasta, Chile. This project will secure the water supply for large-scale mining in the region, eliminate 100% of discharges to the sea, and improve water sustainability in the area.