Raritan Headwaters Association (RHA) is a nonprofit conservation organization and accredited land trust that protects, preserves, and improves water quality and other natural resources of the Raritan River headwaters region in New Jersey through efforts in science, education, advocacy, land preservation, and stewardship. Over 60 years, their efforts have safeguarded clean drinking water sources while engaging New Jersey residents in actions and decisions that will protect the state's health and quality of life.