Several small public water systems in the Midwest have exceeded the maximum contaminant level (MCL) for atrazine, a common herbicide used through Midwestern watersheds. Water systems that use surface water are more susceptible to pesticide contamination than systems that use ground water. The overall goal of the project was to facilitate source water protection related to agricultural pesticides, with a focus on atrazine, because of the prevalence of atrazine in surface water in the Midwest compared to other agricultural pesticides. The project accomplished three objectives: (1) Compile information on levels of atrazine (ppb) in community water systems in Indiana that use surface water, and make the information accessible to the drinking water community, the agricultural community, and the public; (2) Assess the water quality impacts of potential changes to pesticide application and management practices in watersheds used by small community water systems; and (3) Educate pesticide applicators and the public about watersheds used by community water supply systems, and the importance of knowing about these watersheds in making pesticide applications. This project addressed the MTAC research priority, 'Measures to strengthen source water protection for small systems in the Midwest'.