Helen Nguyen (image) University of Illinois at Urbana-Champaign Share Print E-Mail Caption Civil and environmental engineering professor Helen Nguyen has found that water-softening additives may increase the risk of pathogen release into drinking water by weakening the grip that bacteria have on pipe interiors. Credit Photo by L. Brian Stauffer. Usage Restrictions Photo may be used in stories related to this press release. Credit is required. Photo by L. Brian Stauffer. Share Print E-Mail 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.