Related Experiment Videos
Outbreaks in drinking-water systems, 1991-1998.
Gunther F Craun1, Nena Nwachuku, Rebecca L Calderon
1Gunther F. Craun & Associates, Suite 207, 101 West Frederick Street, Staunton, VA 24401, USA. gfcraun@cfw.com
Journal of Environmental Health
|August 1, 2002
Summary
Waterborne disease outbreaks from 1991-1998 caused over 429,000 illnesses. Key causes included contaminated groundwater and disinfection failures, highlighting the need for improved water system safety.
Area of Science:
- Environmental Health
- Epidemiology
- Public Health
Background:
- Waterborne diseases pose a significant public health risk.
- Understanding outbreak causes is crucial for prevention.
Purpose of the Study:
- To analyze the scope and causes of waterborne disease outbreaks in the U.S. from 1991-1998.
- To identify common etiological agents and contributing factors to water system failures.
Main Methods:
- Retrospective analysis of reported waterborne disease outbreaks.
- Review of etiological agents, contaminants, and system deficiencies.
- Examination of water sample results and regulatory compliance.
Main Results:
- 126 outbreaks reported, causing 429,021 illnesses, 653 hospitalizations, and 58 deaths.
- Bacterial, viral, or protozoan agents identified in 41% of outbreaks; chemical contaminants in 18%.
- Groundwater contamination, inadequate disinfection, and distribution system issues (e.g., cross-connections) were primary causes.
Conclusions:
- Waterborne disease outbreaks remain a substantial public health concern.
- Improvements in groundwater treatment, disinfection, and distribution system integrity are essential.
- Further research is needed to identify agents in undetermined outbreaks.