 Firstly preparing of ISO 14000 environment management system is reliant to world summit which was done in Rio in June 1992 year and principles of Rio contract . World summit which was done, 1 year after, in 1993 by ISO, for preparing of international environment management system, technique committee was occurred by about representatives of 50 countries.
ISO 14001 environment management system was issued and applied in September 1996 by working of this committee. ISO 14000 applying are still reliant to basics of voluntary but standard will be mandatory with coactions of social, international organizations and states in near future. Passed levels of environment management system are the following:
1973 : Europe Community principles I. Action plan was issued (for applying of protective cautions of environment)
1992: BS 7750 standard
1992: Rio Declaration
1993: ISO /TC 207 environment management technique committee was established to develop by ISO 14000 family standard.
1994: TS 9719 standard (Environment management system – general features)
1996: ISO 14001 standard
2004 :ISO 14001 current version | 
