The Nebraska Department of Health and Human Services Public Health Environmental Laboratory has been in business for over 80 years. It is located at 3701 South 14th Street in Lincoln, Nebraska. The laboratory employs seventeen full-time staff. Trained qualified chemists, laboratory scientists, and laboratory technicians, under supervision of a management team, perform all testing. The Public Health Environmental Laboratory is certified by the United States Environmental Protection Agency (U.S. EPA). The U.S. EPA performs on-site audits every three years.