Water-related Diseases and Contaminants in Private Wells
Over 15 million U.S. households obtain their drinking water from private wells (1), which are not covered by the United States Environmental Protection Agency (EPA) regulations that protect public drinking water systems. Although the United States has one of the safest drinking water supplies in the world, sources of drinking water can still become contaminated through naturally occurring chemicals and minerals (e.g. arsenic, radon), local land use practices (e.g. pesticides, chemicals, animal feeding operations), malfunctioning wastewater treatment systems (e.g., sewer overflows), and other sources. Contamination of a private well can impact not only the household served by the well, but also nearby households using the same aquifer.
Owners of private wells are responsible for ensuring that their water is safe from contaminants. Private wells should be checked every year for mechanical problems, cleanliness, and the presence of coliform bacteria, nitrates, and any other contaminants of local concern. A local health department or water well systems professional can help ensure delivery of high-quality water from an existing well or, if needed, help locate and construct a new well in a safer area. Additional information about well maintenance and water testing is available at Healthy Water's Well Testing page.
The presence of contaminants in water can lead to health issues, including gastrointestinal illness, reproductive problems, and neurological disorders. Infants, young children, pregnant women, the elderly, and people whose immune systems are compromised because of AIDS, chemotherapy, or transplant medications, may be especially susceptible to illness from some contaminants.
The Top 5 Causes of Waterborne Outbreaks * in Private Groundwater Wells
For more water-related diseases, see CDC Healthy Water's Diseases, Contaminants and Injuries.
1. U.S. Census Bureau. Current Housing Reports, Series H150/07, American Housing Survey for the United States: 2007, U.S. Government Printing Office, Washington, DC: 20401, Printed in 2008. Available at http://www.census.gov/prod/2008pubs/h150-07.pdf (PDF, 6.82 mb, 642 pages)
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- Page last reviewed: April 7, 2009
- Page last updated: April 7, 2009
- Content source: Centers for Disease Control and Prevention
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