The Constitution of India entered into force in 1950, and its part IV devoted to Directive Principles of State Policy brings the constitutional provisions with regards to environment.
“48A. Protection and improvement of environment and safeguarding of forests and wild life.—The State shall endeavour to protect and improve the environment and to safeguard the forests and wild life of the country.”
The Environment Protection Act was enacted in 1986 and it grants to the Central Government the power to establish authorities “with the mandate of preventing environmental pollution in all its forms and to tackle specific environmental problems that are peculiar to different parts of the country”. The Act was last amended in 1991.
Information regarding environmental protection in India is available at the Ministry of Environment and Forests' website. The website also provides for environmental legislation in India, documents on major initiatives, rules and regulations.