This Is the Cleanest Lake in the U.S.—and It Has Crystal-clear Waters and Zero Pollution

"I consider Lake Superior the superior lake for swimming based on the study: it stretches between the upper Midwest and Canada—touching Michigan, Minnesota, Wisconsin, and Ontario—and is praised for oxygen-rich water, low mineral content, nearly undetectable algae-friendly phosphorus levels, and “second-to-none crystal-clear water,” earning an overall pollution score of 0 out of 10." - 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