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Community Warning System

CONTRA COSTA COUNTY

CURRENT ALERTS
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HOW DO I ….

... register for alerts?

You can register your mobile device through our Registration Page or by clicking the red registration button available on all of our pages on the right side of the screen.

... contact CWS?

By phone: 925-313-9622

By e-mail: cws-staff@so.cccounty.us

By mail: 50 Glacier Drive, Martinez, CA 94553

... request a speaker?

You can request a CWS speaker by filling out this form.

... order brochures?

You can order CWS brochures by filling out this form.

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GET ALERTS ON YOUR CELL PHONE

CWS can alert residents and businesses within Contra Costa County that are impacted by, or are in danger of being impacted by an emergency.
The CWS message will include basic information about the incident and what specific protective actions (shelter in place, lockdown, evacuate, avoid the area, etc.) are necessary to protect life and health.
CWS is generally not used for traffic notifications or other non-life threatening incidents.

We would like to hear from you! Please visit our Feedback Page and submit any questions or concerns.

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CONTACT US

COMMUNITY WARNING SYSTEM
Contra Cost County Office of the Sheriff
Emergency Services Division
By phone: 925-313-9622
By e-mail: cws-staff@so.cccounty.us
By mail: 50 Glacier Drive, Martinez, CA 94553

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CWS is a partnership of County departments, Community Organizations, Industry and the Media

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