The Environment (protection) Act. 1986 was the result of India's commitment, to take appropriate action for the protection and improvement of environment, at the :

The EPA's origins may be traced back to the United Nations Conference on the Human Environment (Stockholm Conference), which was held in Stockholm in June 1972 and attended by India, with the goal of taking suitable steps to improve the human environment. The Act implements the decisions made at the Stockholm Conference.

Important Points

• The Environmental (protection) Act (EPA) was passed in 1986 to ensure environmental protection and enhancement.
• It gives the central government the authority to create authorities tasked with preventing all forms of environmental pollution and addressing specific environmental issues that are unique to different sections of the country.
• The Act is one of the most comprehensive legislations with a pretext to protection and improvement of the environment.

Additional Information

• The United Nations Conference on the Human Environment (UNCHE) was held in 1972 to address environmental and sustainable development challenges.
• The UNCHE, also known as the Stockholm Conference, established a link between environmental conservation and long-term development.
• The Stockholm Conference also yielded concrete suggestions on how governments should collaborate to protect the environment.
• Every international conference and treaty on the environment has been shaped by the principles and strategies articulated during the Stockholm Conference.
• Another result of the meeting was the establishment of the United Nations Environment Programme (UNEP) and the World Environment Day, held annually on 5 June.

Therefore the answer is United Nations Conference on the human environment, Stockholm, 1972.