Contact Lenses in Sewage Sludge (image) American Chemical Society Share Print E-Mail Caption Contact lenses recovered from treated sewage sludge could harm the environment. Credit Charles Rolsky Usage Restrictions Please credit Charles Rolsky for this image. 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.