• Emergency only 911
• California Highway Patrol 1-888-301-4247
• Contra Costa County Sheriff 925-646-2441
• Fire Department 925-634-3400
• Contra Costa Community Warning System 888-792-2237

Hazardous Material:

• Hazardous Materials Ombudsman 877-662-8376
• Hazardous Materials Programs 925-646-2286
• East County -Delta Household Hazardous Waste Collection Facility 925-756-1990

Environmental Protection:

• Environmental Health Programs 925-646-5225
• Clean Water Program 800-NO-DUMPING
• Bay Area Air Quality Management District 800-334-6367

Utilities:

• Discovery Bay Disposal Service 925-634-3099
• Discovery Bay Sewer & Water 925-634-8818 or 925-634-1131
• AT&T Customer Service 1-800-310-2355
• PG&E Customer Service 1-800-743-5000
• Comcast Cable Services 925-634-3583

Schools:

• Discovery Bay Elementary School 925-634-2159
• Timber Point Elementary School 925-634-4369
• Knightsen Elementary School K-4 925-626-3301
• Knightsen Elementary School 5-8 925-626-3304
• Byron Intermediate School 925-634-2128
• Excelsior Middle School 925-240-7356
• Liberty Union High School 925-634-2166

Community Services:

• Town of Discovery Bay CSD 925-634-1131
• Discovery Bay Marina Harbor Master 925-634-5928
• Discovery Bay Chamber of Commerce 925-640-5746
• Reclamation 800 Water District 925-634-2351
• Discovery Bay Property Owners Association 925-634-7585
• U.S. Post Office 925-634-2600

Recreation Opportunities:

• Discovery Bay Athletic Club 925-634-1210
• Discovery Bay Country Club 925-634-0700
• Discovery Bay Yacht Club 925-634-1210