Hours & Directions

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In response to county, state, and federal guidelines, Central San’s public-facing services are open under modified operations.

These include: 

All in-person school programs, public events, and tours have also been suspended.  

Wastewater collection and cleaning services continue uninterrupted. We remain committed to our mission of protecting public health and the environment.

Information on modified operations and services will be posted on this page and updated as the situation changes.

Central San Offices and
Treatment Plant

Household Hazardous Waste
Collection Facility

5019 Imhoff Place
Martinez, CA 94553
(925) 228-9500
View directions

Hours of Operation

Emergencies & Treatment Plant: 24 hours
Headquarters: Monday-Friday, 8am-5pm
Permit Counter: Monday-Friday, 8am-4pm
Inspection: Monday-Friday, 7am-3pm

Operations are closed on the following holidays:

  • 01/17/22 Martin Luther King, Jr. Day
  • 02/11/22 Lincoln’s Birthday Observed
  • 02/21/22 Washington’s Birthday
  • 05/30/22 Memorial Day
  • 07/04/22 Independence Day
  • 09/05/22 Labor Day
  • 11/11/22 Veterans’ Day
  • 11/24/22 Thanksgiving
  • 11/25/22 District Holiday
  • 12/23/22 Christmas Holiday Observed
  • 12/26/22 Christmas Holiday Observed
  • 12/30/22 New Year’s Holiday Observed
  • 12/30/22 New Year’s Eve Observed
  • 01/02/23 New Year’s Observed

4797 Imhoff Place
Martinez, CA 94553
(800) 646-1431
View directions

Hours of Operation

Residents: Monday-Saturday, 7am-2pm
Reuse Room: Monday-Saturday, 7am-1:30pm
Small Businesses: Monday-Saturday, by appt only

HHW Facility is closed on the following holidays:

  • 01/17/22 Martin Luther King, Jr. Day
  • 02/12/22 Lincoln’s Birthday
  • 02/21/22 Washington’s Birthday
  • 05/30/22 Memorial Day
  • 07/04/22 Independence Day
  • 09/05/22 Labor Day
  • 11/11/22 Veterans’ Day
  • 11/24/22 Thanksgiving
  • 11/25/22 District Holiday
  • 12/23/22 – 01/02/23 Holidays