Working to Find Ways to Reduce Selenium In Our Locally Affected Waterways
Selenium is an essential trace element that occurs naturally in the environment. Selenium is widely distributed in rocks, soils, water and living organisms. In the western United States, it is most common in marine sedimentary deposits like the local Mancos shale. Selenium is highly mobile and biologically available in arid regions having alkaline soils, typical of western Colorado's irrigated valleys.