http://www.legislation.gov.uk/asc/2026/4/section/2Environment (Principles, Governance and Biodiversity Targets) (Wales) Act 2026enStatute Law Database2026-07-16Expert Participation2026-06-27 PART 1 2 In this Part, the “environmental principles” are— a the precautionary principle so far as relating to the environment; b the principle that preventative action should be taken to avoid environmental damage; c the principle that environmental damage should as a priority be rectified at source; d the polluter pays principle. S. 2 in force at 27.6.2026, see s. 46(2)(a)