10.10.2011: Memorandum The agw, of the BWK NRW state association, of the DWA NRW state association, and of the City Council/Association of Cities and Municipalities NRW "for the protection of waters from trace substances"

15.09.2011: Annotations of the agw for the re-enactment of the Fertiliser Ordinance 

30.05.2011: agwStatement to the „Green Paper on the Future of VAT - Towards a Simpler, More Robust and Efficient VAT System" of 01.12.2010 COM (2010)695 final.

15.04.2011: agwStatement to the "Green Paper on the modernisation of public procurement policy – towards a more efficient European procurement market" of 27.1.2011 COM (2011)15 final.

17.03.2011: Federal Council bill a regulation for the protection of surface waters for the meeting on 25 May 2011 in Berlin

16.03.2011: Draft of a regulation for the protection of surface waters for the Federal Cabinet meeting on 16 March 2011 in Berlin