Residues Monitoring throughout the European Union
The best place to start is by looking at the European Commission's website. Here you can see the Commission's most recent report of monitoring activity throughout the Community.
Here are the websites of some of those organisations - we've put in a link to their most recent monitoring report where we can find one and will add details of those countries which joined the EC in May 2005 in due course.
Germany: http://www.bvl.bund.de/EN/01__Food/05__LM__Monitoring__en/LM__Monitoring__EN__node.html (english version)