Wine industry generates large volumes of wastewater originating from various processes and operations carried out during wine production. Spain is considered one of the world's largest wine-producing countries. Nevertheless, most of wineries still lack of a proper wastewater treatment system. Constructed wetland systems constitute an alternative to conventional systems due to their low cost, low energy requirement and easy operation and maintenance. The aim of this work is to assess the environmental impacts of constructed wetlands for winery wastewater treatment.