Drinking Water Service Areas

Polygons delineate general areas served by Washington State public water systems. Data is updated Monday mornings. Check the "Data updated:" date in the Details section. Metadata dates are not automatically updated.多边形（Polygons）用于勾勒华盛顿州公共供水系统所覆盖的大致服务区域。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」字段。元数据（Metadata）的日期不会自动更新。