Washinton State Department of Health, Scott Kellogg, GIS AnalystPolygons 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.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/b09475f47a5a46ca90fe6a168fb22e6d_0engState of Washington Geospatial Open Data PortalPublicDrinking Water Service Areas [Washington (State)]Web servicesWashington (State)Last Modified: 2023-10-16