Changes in wastewater treatment in regions of Europe between 1990 and 2007
Northern: Norway, Sweden, Finland and Iceland
Central : Austria, Denmark, England & Wales, Scotland, the Netherlands, Germany, Switzerland, Luxembourg and Ireland
Southern: Greece, Spain and Portugal Cyprus, Greece, France, Malta, Spain and Portugal (Greece only up to 1997 and then since 2006)
Eastern: Czech Republic, Estonia, Hungary , Latvia, Lithuania, Poland, Slovenia, Slovakia
South eastern: Bulgaria , Romania and Turkey
Only countries with data from (almost) all periods were included, the numbers of countries are given in parentheses, see the country information per region in CSI024 Assessment 2010 Fig. 2 to 6. (http://www.eea.europa.eu/data-and-maps/indicators/urban-waste-water-treatment/urban-waste-water-treatment-assessment-2)
The percentages have been weighted with country population when calculating the group values.