Changes in urban waste water treatment in southern Europe

• Population connected to urban wastewater collecting and treatment systems, by treatment level (ten00020), Statistical Office of the European Union (Eurostat)

• Cyprus
• France
• Greece
• Italy
• Malta
• Portugal
• Spain

Methodology:
Steps for the graph were set at 1970, 1980, 1990, 1995, 2000, 2005, 2010, 2012, 2014 and 2015. If data were missing for that year, the most recent year reported was used for gap filling, e.g. 2013 data used for 2014. This approach was used for up to 9 years of gap filling.