Pursuant to Article 191(2) of the Treaty on the Functioning of the European Union (TFEU), Union policy on the environment is to be based on the precautionary principle and on the principles that preventive action is to be taken, that environmental damage is, as a priority, to be rectified at source and that the polluter is to pay.
Text as published in the Official Journal, reproduced verbatim (including any typographical quirks of the source). For the authentic version, see EUR-Lex.