Contra Costa Environmental Health Department
- Programs and services include waste management, water quality protection, food safety monitoring, land use planning and vector control.
- http://www.cchealth.org/groups/eh/

Friends of Pinole Creek Watershed
- Volunteer organization focuses on improving environmental quality in the area around the creek. Includes details on current projects.
- http://www.pinolecreek.org/

CERES - Contra Costa County
- An index to environmental information for the county. Extensive reference includes road, weather, and flood conditions, demographics, historical resources, maps.
- http://ceres.ca.gov/geo_area/counties/Contra_Costa/