The Blue Mountains State Emergency Service Unit is one of the 230 SES Units spread across NSW and is located in the SES Sydney Western Region. With a membership of over 100 volunteers, it is responsible for the management of storm and flood operations and the provision of support to other emergency services in the Blue Mountains. Support is frequently provided to adjoining SES Units in Sydney Western Region to the east and Central West Region to the west. Occasionally support is provided to other areas of the state.