"According to the study, Lake Chelan in Washington was named the second-cleanest lake in America, with an overall pollution score of just 0.14." - Katie Nadworny Katie Nadworny Katie Nadworny is an Istanbul-based writer who specializes in stories at the intersection of culture and politics in Turkey, Eastern Europe, and the Middle East. She has lived in Turkey for nearly a decade and has traveled extensively around the region. Travel + Leisure Editorial Guidelines