Opinion of Advocate General Kokott delivered on 26 March 2009. # Commission of the European Communities v Kingdom of Sweden. # Failure of a Member State to fulfil obligations - Environment -Directive 91/271/EEC - Treatment of urban waste water - Failure to require more stringent treatment of nitrogen in all treatment plants of urban waste water from agglomerations of more than 10 000 population equivalent. # Case C-438/07.

ECLI:EU:C:2009:196Eu CjeuMar 26, 2009