Water management is a field of the national economy, which includes, among others, issues of water protection against pollution and against flood, and also resources management for the need of both society and economy. The implementation of Water Framework Directive and other activities and programs, which have a significant impact on quantitative and qualitative water condition, serve the water quality improvement in the whole Oder river basin area. Whereas reducing both the flood risk and the consequences of floods in the countries of the European Community and the proper flood risk management is the purpose of Flood Directive. The platform for coordinating the implementation of both directives in the International Oder River Basin District is the International Commission for the Protection of the Oder River against Pollution.The paper describes the progress made in implementation of both directives in the international Oder river basin. It also highlights the fact that the trilateral cooperation in the Oder basin should provide competent coordination of all actions of individual states, which would contribute to the proper implementation of European Community water policy in the field of improving the water environment. ...