Researchers, Students Team Up to Help Lake Atitlan (image) University of Nevada, Reno Share Print E-Mail Caption Researchers and students examine a sediment core sample from the bottom of Guatemala's high-mountain tropical Lake Atitlan to help trace the history of impacts on the lake's ecosystem. The lake's water is contaminated with watershed runoff and waste water, which contributes to increased algae growth and suitable conditions for bacteria and pathogens that can proliferate and enter untreated drinking water Credit Photo by Ellen Levy. Usage Restrictions None 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.