General Info

Hours:

Normal Office Hours are Monday Thru Friday 8:00 am - 5:00 pm.

Click here for Delta Household Hazardous Waste Collection Facility information

Directions to our Facility:

We are located just North of Highway 4 on the Pittsburg-Antioch Highway, between Loveridge and Somersville Roads. The Plant Operations Center (Administration, Laboratory, Maintenance and Purchasing/Deliveries) is located on the left side of the road; the Treatment Plant (Permits, Operations and Technical Services, including Engineering and Construction) is on the right side.

History

Delta Diablo Sanitation District was originally formed in 1955 to protect the health of the public and the environment by collecting and effectively treating wastewater. The existing regional wastewater treatment facility was completed in 1982. The District's East Contra Costa County service area of Antioch, Bay Point and Pittsburg is 42 square miles with a population approaching 190,000. Treated effluent is discharged into New York Slough, a section of the San Joaquin River. In 2006, we treated an average of 14,200,000 gallons per day (14.2 MGD).

In 2001, DDSD started its recycled water program in an effort to help protect the state's valuable and limited drinking water supply. Recycled water is used at two nearby power generating plants and for landscape irrigation. Click here for more information about the DDSD Recycled Water Program.

The District operates the Delta Household Hazardous Waste Collection Facility at 2500 Pittsburg-Antioch Highway, between Loveridge and Somersville Roads. Click here for more information about the Household Hazardous Waste Collection Facility.

Not all pollutants can be removed by the treatment process. To ensure that certain pollutants do not enter the Delta, DDSD has established a Pretreatment Program, which consists of public education and regulation of certain businesses and industries. Our Pretreatment Department works closely with commercial and industrial users to ensure that hazardous substances such as solvents, pesticides, metals, grease, petroleum, oil, and paints are not discharged into the sewer system. Call DDSD at 925-756-1915 for more information.

Delta Diablo Sanitation District provides street sweeping services. Residential areas are swept as follows: Pittsburg, twice monthly; Bay Point and Antioch, once monthly. Commercial and major boulevards are scheduled at varying intervals. For more information please call DDSD at 925-756-1900 x 0 or click here.