Central San Offices and Treatment Plant

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

• 01/02/18  New Year’s Day Holiday
• 01/15/18  Martin Luther King, Jr. Day
• 02/12/18  Lincoln’s Birthday Observed
• 02/19/18  Washington’s Birthday
• 05/28/18 Memorial Day
• 07/04/18  Independence Day
• 09/03/18  Labor Day
• 11/12/18  Veterans’ Day Observed
• 11/22/18  Thanksgiving
• 11/23/18  District Holiday
• 12/24/18  Christmas Eve 
• 12/25/18  Christmas Holiday 

Household Hazardous Waste Collection Facility

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

• 01/01-01/02 – Holidays
• 01/15/18  Martin Luther King, Jr. Day
• 02/12/18  Lincoln’s Birthday Observed
• 02/19/18  Washington’s Birthday
• 05/28/18  Memorial Day
• 07/04/18  Independence Day
• 09/03/18  Labor Day
• 11/12/18  Veterans’ Day
• 11/22/18  Thanksgiving
• 11/23/18  District Holiday
• 12/24/18 - 01/01/19 Holidays