Polish Geological Institute - National Research Institute (PGI-NRI) provides measurement results, tests in terms of quality and amount of groundwater, necessary for quantitative and chemical assessment of groundwater. The organisation and scope of groundwater monitoring was adapted to comply with European Community directives, particularly the Water Framework Directive (2000/60/EC), Groundwater Directive (2006/118/EC) and Nitrates Directive (91/676/EEC), in accordance with its specific features resulting from the unique geological structure and hydrogeological conditions in Poland. Groundwater monitoring is implemented on three levels: national, regional and local.