Arrecife's wastewater treatment plant expansion to be ready by 2027

Works are 77% complete, but issues with the outfall pipeline require a redesign of a section.

Generic image of a wastewater treatment plant expansion with construction machinery.
IA

Generic image of a wastewater treatment plant expansion with construction machinery.

The expansion of the Arrecife wastewater treatment plant, crucial for a population of 90,000 inhabitants, remains on schedule for early 2027, despite complications arising with the outfall pipeline.

The facility, designed to treat up to 12,000 cubic meters of wastewater daily, is slated for full operation by early 2027, followed by a testing period until mid-year. This revised timeline, approved in late 2025, is being maintained despite setbacks in the pipeline's execution.
The identification of problems along the outfall pipeline's route has led to the partial termination of the contract for a 1,340-meter section, with 1,300 meters already completed. A new project is being drafted for the remaining segment, with tendering planned for this month.
Construction, which began in September 2023 with an investment of approximately 16.5 million euros, is progressing according to official sources. The new pre-treatment building is operational, the old one has been demolished, and the construction of the new primary clarifier has commenced.
Further advancements include the completion of the buffer tank, clarifiers, sludge digester, new biological reactor tanks, and distribution and connection manholes. The mixed sludge building is also finished, and work has been done on the dewatering building for new equipment layout.
Overall, about 77% of the initiative is complete. However, the deodorization system, several civil works related to the new primary clarifier, water and sludge pipelines, various drainage tasks, and the outfall section within the plant itself still need to be finished, along with electrical connections.