The Pennsylvania Department of Environmental Protection (DEP) is the state agency largely responsible for administering Pennsylvania's environmental laws and regulations.

Its responsibilities include: reducing air pollution; making sure our drinking water is safe; protecting water quality in our rivers and streams; making sure waste is handled properly; supporting community renewal and revitalization; promoting advanced energy technology; and helping citizens prevent pollution and comply with the Commonwealth's environmental regulations. PADEP is committed to general environmental education and encouraging effective public involvement in setting environmental policy.