Article 253 of the Indian Constitution empowers the Parliament to enact laws for the protection and improvement of the environment.

The National Ganga River Basin Authority was established in 2009 to address the environmental issues related to the river Ganga.

The primary objective of the National Ganga River Basin Authority is to ensure the cleanliness of the river Ganga, prevent pollution in the river Ganga, and promote sustainable development in the Ganga basin.

The Yamuna River Basin Authority was established in 1991 to address the environmental issues related to the river Yamuna.

The primary objective of the Yamuna River Basin Authority is to ensure the cleanliness of the river Yamuna, prevent pollution in the river Yamuna, and promote sustainable development in the Yamuna basin.

The Brahmaputra River Basin Authority was established in 1996 to address the environmental issues related to the river Brahmaputra.

The primary objective of the Brahmaputra River Basin Authority is to ensure the cleanliness of the river Brahmaputra, prevent pollution in the river Brahmaputra, and promote sustainable development in the Brahmaputra basin.

The Godavari River Basin Authority was established in 2002 to address the environmental issues related to the river Godavari.

The primary objective of the Godavari River Basin Authority is to ensure the cleanliness of the river Godavari, prevent pollution in the river Godavari, and promote sustainable development in the Godavari basin.

The Krishna River Basin Authority was established in 2004 to address the environmental issues related to the river Krishna.

The primary objective of the Krishna River Basin Authority is to ensure the cleanliness of the river Krishna, prevent pollution in the river Krishna, and promote sustainable development in the Krishna basin.

The Narmada River Basin Authority was established in 2006 to address the environmental issues related to the river Narmada.

The primary objective of the Narmada River Basin Authority is to ensure the cleanliness of the river Narmada, prevent pollution in the river Narmada, and promote sustainable development in the Narmada basin.

The Kaveri River Basin Authority was established in 2008 to address the environmental issues related to the river Kaveri.

The primary objective of the Kaveri River Basin Authority is to ensure the cleanliness of the river Kaveri, prevent pollution in the river Kaveri, and promote sustainable development in the Kaveri basin.