Intervention_Category: Regulation/Standard; Intervention_Subcategory: residential; Ag1_NonAg2_Both3: 3; Rulemaking_Agenc_.Level: State; Implementing_Agency_Level: State, County; Promulgating_Policies: WI Stat. 94.643 Restrictions on the use and sale of fertilizer containing phosphorus; Short_Intervention_Description: Wisconsin Code Ch. 94 restricts use of phosphorus-containing lawn fertilizers. Like Dane County ordinance, except the state rule allows retailers to display P-containing fertilizer, but they must post a sign stating that it can be used only for certain purposes.; Intervention_area_ha: 60484.14; Data_Sources: Non-agricultural land cover/use designations from National Land Cover Database, 2006, and validated on the ground by the Capital Area Regional Planning Commission (CARPC) in 2010.; Mapping_Rationale: All watershed – excluding agricultural lands and water bodies.