CDC - Water-related Data and Statistics Home

National Outbreak Reporting - Training videos for NORS
Health Data A-Z - Links to health data on water-related diseases and injuries
WBDOSS - Waterborne Disease and Outbreak Surveillance System

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.

Water-related Data and Statistics Topics

Waterborne Outbreak Data

Disease & Outbreak Surveillance (WBDOSS), Reporting (NORS)...

Environmental Tracking Data

Environmental Tracking, Water Testing, Beach Monitoring...

Health Data

Waterborne Disease Estimate, Notifiable Diseases, Data Index...

Healthy Water Sites

Top 5 Causes - Drinking Water Outbreaks *

Top 5 Causes - Recreational Water Outbreaks *

For a complete listing of water-related surveillance data, see CDC’s Surveillance Summaries for Waterborne Diseases and Outbreaks

* Based on tracking of waterborne outbreaks from 1971-2006. Outbreak reporting is dependent on detection, investigation, and reporting of the outbreak. This requires health effects to be measured and these health effects to be linked to water exposure. However, many contaminants (i.e., many chemicals) in drinking water may not cause easily recognizable outbreaks because they require a long chronic exposure period. As a result, they would not be part of waterborne disease outbreak reporting or part of these Top 5 lists.