Central Contra Costa Sanitary District
5019 Imhoff Place
Martinez, CA 94553
To Report Sewer Emergencies: (925) 933-0990
Emergencies & Treatment Plant: 24 hours
Business Offices: Monday-Friday, 8 a.m. to 5 p.m.
Permit Counter: Monday-Friday, 8 a.m. to 5 p.m.
A complete list of contact phone numbers and emails is on our website.
For general inquiries, please email us or complete this form: