“Approximately 40%–45% of the U.S. population depends on ground water for its drinking water supply (1–3). Each year, the National Ground Water Association (NGWA) sponsors Ground Water Awareness Week to highlight ground water as a valuable resource and to emphasize the importance of private well maintenance and water testing….

Additional information regarding well maintenance, water testing, and National Ground Water Awareness Week is available at http://www.wellowner.org and http://www.cdc.gov/ncidod/dpd/healthywater/privatewell.htm.