The following web pages provide comprehensive water-related data and resources including:

• Outbreak Data: Waterborne Disease and Outbreak Surveillance System (WBDOSS) and National Outbreak Reporting System (NORS), which are disease surveillance systems used to track nationally notifiable diseases.
• Health Data: an alphabetical listing of data, statistics, and reports on water-related illness and contaminants.
• Environmental Tracking Data: information on water quality measures and contaminants in the environment.
• Biomonitoring Data: information on the measurement of contaminant levels in clinical samples, which is related to the level of a person’s exposure to toxic substances.