EPA is the US environmental protection bureau English abbreviation. The headquarters are located in Washington, some 10 places office and several laboratories. Has 18000 employees in the entire US, more than half of them are engineer, the scientist and the policy analyst. EPA directly leads by president.

   The US environmental protection bureau EPA primary mission is protects the human health and the natural environment. Since 1970, EPA continuously gives the entire American people to create a neat and healthy environment.

US    environmental protection bureau EPA in the national environmental science and the correlation investigation, the education and the appraisal aspect has the leadership status. EPA and other federation organizations, the state and the local government and the India peaceful protectorate close cooperation, in the environment laws and regulations foundation which has done further develops and the strengthened work. EPA is responsible to various environment plan carries on the investigation and the making country standard, and issues the correlation license on behalf of various states and various departments, monitors and strengthens the uniformity. If had not achieved the national standard, EPA may sign and issue the approval through to adopt other measures help states and the place achieved the environment standard requests level. Similarly, EPA carries on each kind of different voluntary antipollution plan and the energy maintenance work together in each place office with other profession organization and all levels of governments.