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Figure 7.1 Changes in wastewater treatment in regions of Europe between 1990 and 2009

Notes: The numbers of countries are given in parentheses. Regional percentages have been weighted by country population.
N-North: Norway, Sweden, Finland and Iceland, only data up to 2006 available
C-Central: Austria, Denmark, England & Wales, Scotland, the Netherlands, Germany, Switzerland, Luxembourg and Ireland

S-Southern: Cyprus, Greece, France,  Malta, Spain  and Portugal (Greece only up to 1997 and then since 2007)
E-East: Czech Republic, Estonia, Hungary , Latvia, Lithuania, Poland, Slovenia, Slovakia (for Hungary and Latvia only data up to 2007 available)
South Eastern: Bulgaria , Romania and Turkey
The percentage values  have been weighted with country population when calculating the group values. Data on population connected to collecting systems without treatment available only since late 90-ies.

Source: CSI24/EEA-ETC/ICM based on data reported to OECD/EUROSTATJoint Questionnaire 2010 (July 2011 update)