Septic Tank (IMAGE) Geological Society of America Caption Septic tank in South Nags Head, North Carolina, that is inundated with groundwater. Picture taken November 2020. Image credit: M. O’Driscoll. Credit M. O’Driscoll Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.