Duane Moser, an assistant research professor with Desert Research Institute, collects water samples from the Las Vegas Wash in Henderson, Nev., Thursday, Oct. 18, 2007. (AP Photo/Jae C. Hong)

The University of Nebraska Medical Center is offering free domestic well water tests to home owners and renters in six Nebraska counties.

Graduate students from the College of Public Health will test the water in the Dakota, Douglas, Washington, Thurston, Burt and Sarpy counties that may have been contaminated by Missouri River flooding.

The tests will evaluate potential bacterial and chemical contamination. They're taking place in conjunction with the Papio-Missouri River Natural Resources District.

Landowners should schedule an appointment by Nov. 18.

The contacts for appointments are Sonya Carlson with the Papio Missouri River NRD at 402-444-6222, and Erica Colbert with the College of Public Health at 402-552-7261.