Changes in urban waste water treatment in south-eastern Europe

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

• Bulgaria
• Croatia
• Romania
• Turkey

Methodology:
Steps for graph were set at 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 were used for 2014. This approach was used for up to 9 years of gap filling.