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EH-5 Data Details

EH-5 Reduce waterborne disease outbreaks arising from water intended for drinking among persons served by community water systems

About the Data

Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.

National Data Source
Waterborne Disease and Outbreak Surveillance System (WBDOSS); Morbidity and Mortality Weekly Report (MMWR), CDC/NCID, and State health departments (MMWR and CDC/NCID and State Health Departments)
Changed Since the Healthy People 2020 Launch
Baseline (Year)
7.0 (1999-2008)
Target-Setting Method
Projection/trend analysis
Average number of water-borne disease outbreaks
Data Collection Frequency
Comparable Healthy People 2010 Objective
Retained from HP2010 objective
Methodology Notes

Reporting is done Annually and published biennially in the Morbidity Mortality Weekly Report (MMWR) Surveillance Summaries. Electronic reporting was launched in 2009 via the National Outbreak Reporting System (NORS). Two criteria must be met for an event to be defined as a waterborne-disease outbreak associated with drinking water: 1) two or more persons epidemiologically linked by location of exposure to water, by time and characteristics of illness and 2) the epidemiologic evidence must implicate water as the probable source of illness. The data include only outbreaks from infectious agents and chemical poisoning from water intended for drinking. Community water systems are public water systems that have at least 15 service connections or serve an average of 25 residents for 60 days/year. A community water system serves year-round residents of a community, subdivision, or mobile home park.


Additional resources about the objective.