Amy Pruden and Marc Edwards. (IMAGE) Virginia Tech Caption The CDC recently awarded two contracts to study antibiotic resistance in recycled water and in plumbing to Amy Pruden and Marc Edwards, both professors in the Charles Edward Via, Jr. Department of Civil and Environmental Engineering. Credit Virginia Tech Usage Restrictions None License Licensed content 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.