EnviroAtlas combines a series of indicator data available for the contiguous United States that is to be updated as new foundational data is released. Indicator data are organized into seven categories which include clean air, climate, clean water and biodiversity. EnviroAtlas also includes reference data on demographics, land cover, political boundaries, watershed boundaries, NPDES permit status, and impaired and listed waters. Please note: EnviroAtlas is continually updated in terms of coverage and available map layers. For most users, it provides a one-stop opportunity to explore relationships among environmental, social and demographic factors.