The Upstream Thinking initiative now operates on ten catchments in target areas, working with over a thousand farmers. Following extensive discussion in 2007-09, guidance leading to the PR09 review included catchment solutions as an option companies could use to address water quality challenges (Ofwat, 2009(87]). In the run-up to PR14, Ofwat supported the development of catchment solutions. With further experience, the regulatory agencies recommended that the approach be used more broadly by water companies in PR 14.