Secretary (Environment) is the over all head of Environment Department. Director Environment is working under the Secretary (Environment), Govt. of NCT of Delhi and he is supervising all technical matter of the Environment Department and assisted by Senior Scientific Officer, Scientists and trainees.

All Senior Scientific Officers and Scientists are responsible for implementation of plan schemes pertaining to Environment Department Govt. of NCT of Delhi. For the better performance of each plan schemes Senior Scientific Officers and Scientists are keeping a control watch and visiting various institutions NGO’s, Eco-club schools etc, which have been assisted financially by this department for creating environmental awareness to the general public. Deputy Secretary (Environment) has been declared as Head of Office and is supervising all administrative and accounts related matter of Environment Department and he is being assisted by Superintendent and other ministerial staff. Deputy Secretary (Environment) also acts as Competent Authority under Delhi Right to Information Act 2001 and the Public Information Officer under the Right to Information Act-2005. Secretary (Environment) is the first Appellate Authority under the Right to Information Act-2005.