Tertiary treatment wetlands for water quality control in Granollers, Spain

In drought-prone Granollers, a tertiary treatment wetland system transforms treated wastewater into a safe and sustainable resource. Capable of producing up to 500 m³ of reclaimed water per day, it supports agriculture, gardening, and urban cleaning. At the same time, this wetland enriches the nearby Can Cabanyes natural area. For our project, the municipality will build a second wetland that focuses on removing emerging pollutants such as pharmaceuticals and pathogens, ensuring water safety for reuse. Throughout the project, we will gather scientific evidence on system performance to help the municipality make informed decisions