Urban wastewater treatment

Figure Created 12 Nov 2009 Published 12 Nov 2009 Last modified 29 Nov 2012

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Only countries with data from all periods included

https://www.eea.europa.eu/data-and-maps/figures/urban-wastewater-treatment/fig11_10/image_large

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Last upload:: 01 Jan 2002
Rights:: EEA standard re-use policy: unless otherwise indicated, re-use of content on the EEA website for commercial or non-commercial purposes is permitted free of charge, provided that the source is acknowledged (https://www.eea.europa.eu/legal/copyright).
Figure type:: Graph

Additional information

Number of countries in brackets. Northern: Iceland, Norway, Sweden, Finland; Western: Austria, Ireland, United Kingdom, Luxembourg, the Netherlands, Germany, Denmark; Southern: Greece, Spain. Primary wastewater treatment removes part of the suspended solids, but no ammonium; secondary (biological) treatment uses aerobic or anaerobic micro-organisms, retains 20 % to 30 % of the nutrients and removes around 75 % ammonium; tertiary treatment includes phosphorus retention and in some cases nitrogen removal.