The EdenDTC project was about the management of diffuse water pollution from agriculture (DWPA) within the upland mixed grassland farming system. This video discusses the three key learning points about the spatial patterns of diffuse pollution and the spatial targetting of management approaches. The three learning points were: 1. The amount and location of diffuse pollution source risk change over time 2. How we identify the critical source areas determines their predicted location 3. Key source areas for different pollutants are in different locations. This is a presentation from the final workshop of the EdenDTC project.