The Environmental Coalition of Putnam County is a 501(c)(3) Non-Profit Organization created to protect water and other natural resources from the negative effects of the application of sewage sludge, also known as biosolids, proposed to be brought from outside the county and dumped in south Putnam County, Florida.

The organization's efforts are focused on a proposed site on Old Highway 17 in Crescent City, because it has been designated by the Florida Department of Environmental Protection as an environmentally vulnerable area, which has wetlands, a FEMA flood zone, and highly permeable soil in an aquifer recharge area