Critical Infrastructure Sectors

There are 16 critical infrastructure sectors whose assets, systems, and networks are considered vital to the United States. Their incapacitation or destruction would have a debilitating effect on security, national economic security, national public health or safety. Learn more about each sector through CISA's official resources below.

Chemical Sector

Protecting critical chemical manufacturing and storage facilities

Commercial Facilities

Securing retail, entertainment, and lodging facilities

Communications

Safeguarding telecommunications infrastructure

Critical Manufacturing

Protecting essential manufacturing operations

Dams

Securing dam operations and water control systems

Defense Industrial Base

Supporting military and defense infrastructure security

Emergency Services

Protecting first responder and emergency response systems

Energy

Securing power generation and distribution infrastructure

Financial Services

Protecting banking and financial institutions

Food and Agriculture

Securing food production and distribution systems

Government Facilities

Protecting government buildings and systems

Healthcare & Public Health

Securing healthcare and public health infrastructure

Information Technology

Protecting IT infrastructure and data centers

Nuclear

Securing nuclear facilities and materials

Transportation Systems

Protecting transportation and logistics infrastructure

Water & Wastewater

Securing water and wastewater treatment facilities