In 1966, folk singer Pete Seeger and a group of activists wanted to take action to stop the pollution of the Hudson River. Over fifty years later, Clearwater is recognized for its unparalleled environmental education programs through which hundreds of thousands of students have investigated the ecology, history, and environmental challenges of the Hudson Valley. In addition to education, Clearwater?s advocacy efforts continue today. Guided by a set of core environmental values, Clearwater works cooperatively with concerned citizens, elected officials, and state and federal regulatory agencies to find solutions that create healthy Hudson River ecosystems free of pollutants.