The New Hampshire (NH) APPLETREE Program, run jointly between NHDES and the NH Division of Public Health Services at NH Department of Health and Human Services, and the Dartmouth Cancer Center’s Community Outreach and Engagement team, have developed training resources to support local leaders that are responding to community environmental health concerns. In this third training, we introduce the audience to examples of common environmental contaminants in NH, how exposure to these contaminants may lead to adverse health outcomes, and finally methods for communicating about and reducing overall risk for communities.