This shapefile contains geographic data representing the Lead Service Line Prioritization Map for the state of Wyoming. The map utilizes parcel-level data (all parcel classifications) to assess the likelihood of lead service lines based on the age of structures within each parcel. Older structures are associated with a higher likelihood of lead presence in water service lines, while more recent build dates suggest a reduced probability of lead. This data is vital for decision-makers and water infrastructure planners in Wyoming to prioritize areas where the replacement or assessment of water service lines is most urgent. It serves as a valuable tool in addressing lead contamination concerns within the state's water supply.