Participatory science uses the collective strength and knowledge of the public to collect, analyze, and use data to answer environmental and public health questions. Participatory science is the involvement of the public in scientific research and includes a broad and inclusive array of activities. Projects answer wide ranging questions, can engage the public in any or all steps of the scientific process, and operate using diverse models ranging from community-led to institutionally driven. These efforts facilitate community engagement and an increase in place-based connections, environmental stewardship, and scientific literacy. EPA has a long history of engaging data collected by the public. In recent years, the agency has collaborated with Tribal Nations, state agencies, academia, technical support providers, and volunteer scientists to explore effective collaborations and approaches to implementation. This webinar will explore three areas of participatory science focus at EPA: role of participatory science at EPA, key considerations and resources available when starting a project, and lessons learned and project spotlights.