The Constitution of 1979's article 50 is dedicated to the environment:
"Article 50 Preservation of the Environment
The preservation of the environment, in which the present as well as the future generations have a right to flourishing social existence, is regarded as a public duty in the Islamic Republic. Economic and other activities that inevitably involve pollution of the environment or cause irreparable damage to it are therefore forbidden."
More information concerning Environmental Protection Legislation in Iran is available on the Food and Agriculture Organization Legal Office's website.