Hours & Directions
Central San Offices and Treatment Plant
5019 Imhoff Place
Martinez, CA 94553
(925) 228-9500
View directions
Hours of Operation
Emergencies & Treatment Plant: 24 hours
Headquarters: Monday-Friday, 8:00am-5pm
Permit Counter: Monday-Friday, 8am-5pm
Operations are closed on the following holidays:
- 01/01/19 New Year’s Day Holiday
- 01/21/19 Martin Luther King, Jr. Day
- 02/12/19 Lincoln’s Birthday Observed
- 02/18/19 Washington’s Birthday
- 05/27/19 Memorial Day
- 07/04/19 Independence Day
- 09/02/19 Labor Day
- 11/11/19 Veterans’ Day Observed
- 11/28/19 Thanksgiving
- 11/29/19 District Holiday
- 12/24/19 Christmas Eve
- 12/25/19 Christmas Holiday
- 12/31/19 New Year’s Eve
Household Hazardous Waste Collection Facility
4797 Imhoff Place
Martinez, CA 94553
(800) 646-1431
View directions
Hours of Operation
Residents: Monday-Saturday, 9am-4pm
Reuse Room: Monday-Saturday, 9am-3:30pm
Small Businesses: Monday-Saturday, by appt only
HHW Facility is closed on the following holidays:
- 01/02/19 New Year’s Day
- 01/21/19 Martin Luther King, Jr. Day
- 02/12/19 Lincoln’s Birthday Observed
- 02/18/19 Washington’s Birthday
- 05/27/19 Memorial Day
- 07/04/19 Independence Day
- 09/02/19 Labor Day
- 11/11/19 Veterans’ Day
- 11/28/19 Thanksgiving
- 11/29/19 District Holiday
- 12/24/19 - 01/01/20 Holidays