Please contact for any information you may need.

New office hours:

  • Monday – Friday:     9:00 am to 3:30 pm
  • Hours are subject to change from time to time

Services needed after hours, may be arranged by appointment by calling 925 684-2210.

If there is an emergency, please call 925 684-2210 and the answering service will contact the appropriate personnel.


The BIMID Office phone number 925-684-2210 has a backup answering service 24/7.  When the service answers, provide your name, street address and phone number.  State the reason for your call.  If there is an urgency for you to reach someone at BIMID, the Operator will contact an employee or Board Member while you are on the phone.  If this fails for any reason and you believe there is an emergency, hang up and dial 911.

  • Phone
    • 925-684-2210
  • FAX
    • 925-684-0724
  • Address
    • PO Box 244
      3085 Stone Road
      Bethel Island, CA  94511
  • Email

Note:  If you dial 911 from a cell phone, your call is directed to the California Highway Patrol Dispatcher, not the Contra Costa Sheriff.  In an emergency, it is better to call 911 from a land line as the response time will be quicker.  To call the the Sheriff directly from a cell phone, dial 925-646-2441.