- Zerofootprint
- RealClimate
- The Green Initiative
- US Environmental Protection Agency
- Climate Change – US EPA
- California Global Climate Change & Global Warming Links
- California Department of Toxic Substances Control
- California State Water Resources Control Board
- Climate Change – California Air Resources Board
- Environment California
- San Diego Regional Water Quality Control Board
- San Diego Regional Water Quality Control Board – Water Quality Programs
- County of San Diego, Department of Environmental Health
- San Diego Climate Smart
- California Law Codes