Wellhead Protection Areas (6 month)

Polygons depict 6 month time of travel estimates for active group a public drinking water supplies. Source location data were obtained from the Washington State Department of Health, Office of Drinking Water. This layer is used in the Source Water Assessment Protection application https://fortress.wa.gov/doh/swap/index.html. Data is updated Monday mornings. Check the "Data updated:" date in the Details section. Metadata dates are not automatically updated.多边形要素展示了在用公共饮用水供水设施的6个月旅行时间估算值。其源位置数据取自华盛顿州卫生部（Washington State Department of Health）饮用水办公室（Office of Drinking Water）。此地理信息图层已应用于水源评估保护（Source Water Assessment Protection）平台https://fortress.wa.gov/doh/swap/index.html。数据于每周一上午更新，请在详情板块中查看「数据更新日期」。元数据日期不会自动更新。