12th IWA international conference on wetland systems for water pollution control

Constructed wetlands (CWs) have been adopted by many Italian communities as a cost-effective mean of secondary and tertiary wastewater treatment, in order to meet more stringent standards and to lower operating costs. Some small systems have now been in existence for nearly 15 years, while wetland treatment systems for larger towns and small cities have become a more recent trend. Since 1999 CWs have been “officially” recognized as a treatment technology.