Waste categories are defined on the basis of the statistical European Waste Classification (EWC-Stat), which is a substance-oriented nomenclature and which has been specially created for EU waste statistics. The 51 waste categories that must be reported in waste generation include 21 hazardous waste categories and 30 non-hazardous waste categories. Legal basis: Commission Regulation (EU) No 849/2010 of 27 September 2010 amending Regulation (EC) No 2150/2002 of the European Parliament and of the Council on waste statistics (Text with EEA relevance), OJ L 253, 28.9.2010, p. 2-41. WASTE categories is maintained by Eurostat and published by the Publications Office of the European Union on the EU Vocabularies website.