Don’t have time to call? We want to hear from you. Customer service is of the utmost importance to Tri Delta Transit. Please use the below general comments form:

Have a specific topic you’d like to talk to us about? You can visit the Send Us a Message page for the following forms:

Help, I lost something
Comment Form
Commendation Form
Complaint Form
Suggestion Form
and more,

If you are unable to access the comment forms online, you may also leave comments the following ways:

Call us at 1-925-754-6622 and ask to leave a comment. You will be transferred to the customer service department.
Visit our administrative offices at 801 Wilbur Ave, Antioch, during weekday business hours
Email us directly at comments@eccta.org with complete details

Please note: Eastern Contra Costa Transit Authority (Tri Delta Transit) has designated documents and forms uploaded to the website before April 1, 2026 archived. We are currently working on revised documents for 2026 and will upload them shortly. Forms and documents are kept on the website for use and historical purposes and should not effect you doing business with us. Thank you for your patience.

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