The following organizations offer information on programs that protect water quality. These may include standards for pesticides in water.

• California Department of Pesticide Regulation
• California Office of Environmental Health Hazard Assessment
• California State Water Resources Control Board
• Central Coast Regional Water Quality Control Board
• North Coast Regional Water Quality Control Board
• San Francisco Regional Water Quality Control Board
• Sonoma County's Permit and Resource Management Department (PRMD)
• UC IPM Online
• U.S. Environmental Protection Agency (pesticides)
• U.S. Environmental Protection Agency (water)
• U.S. EPA Pesticide Fate Database
• U.S. Geological Survey (water)