UV light

Andrew Tucker / Miami University

Ultraviolet light is nature's way of purifying lakes, rivers and coastal waterways. Researchers led by a Miami University professor are quantifying how climate change is negatively affecting nature's ability to do its job.

Ann Thompson / WVXU

With Thursday's ribbon-cutting ceremony at the new UV Disinfection Treatment Facility, Cincinnati will lead North America in water treatment. It will be the first to use UV disinfection following sand filtration and Granular Activated Carbon during the treatment process.

UV light, generated when reactors excite mercury, is one of the final steps in the water treatment process in Cincinnati. Here are the others, in this order: