Ministry of the
Solicitor General

Chemical / Biological / Radiological / Nuclear/Explosive


A chemical, biological, radiological, nuclear and explosives (CBRNE) event is an uncontrolled release of chemicals, biological agents or radioactive contamination into the environment or explosions that cause widespread damage. These incidents can be caused by accidents or by acts of terrorism.

Ontario has a number of CBRNE response teams able to respond to these events. Teams are classified as level 1, level 2 or level 3 teams based on the complexity of incidents they are able to respond to. Ontario has three level 3 expert (technician) teams – Toronto, Windsor and Ottawa; and six level 2 operational support teams – Peterborough, Cornwall, Sault Ste. Marie, Thunder Bay, North Bay and Waterloo Region. Additionally, the Ontario Provincial Police (OPP)’s UCRT (Urban search and rescue, CBRNE Response Team) is trained in CBRNE response.

Learn more about these specialized resources: