The Contra Costa County Community Warning System (CWS) is recognized as one of the nation’s most modern and effective all-hazard public warning systems. The CWS is a partnership of the Office of the Sheriff, the Health Services Department, other government agencies, industry, news media and the non-profit Community Awareness & Emergency Response (CAER) organization, all striving to deliver time-sensitive and potentially life-saving information to the people of Contra Costa County.
How will we notify you? Read and hear information about our Notification Methods.
