Discovery Bay is adjacent to Highway 4 in east Contra Costa County.  Neighboring communities are the cities of Brentwood and Oakley to the west, Stockton to the east, and Tracy to the south.

Town of Discovery Bay CSD Office 
1800 Willow Lake Road
Discovery Bay, CA  94505

Monday-Friday 8:30 a.m. to 5:00 p.m.

Phone: (925) 634-1131
Map/Directions