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The data fields found within this GIS layer are as follows:Public Water system Identification (PWSID):The PWSID is a unique number used to identify water systems within a specific state.System Name:This is the name of the water system.Water Source Description:This column identifies the primary source of the water used by the water system:GW: Groundwater.GWP: Groundwater purchased.SW: Surface water.SWP: Surface water purchased.GU: Groundwater under influence of surface water.GUP: Purchased groundwater under influence of surface water source.County:Name of the county in which the water system is located.Data Source:This field lists the origin of the displayed water system locations and data:MDE: Internal files.Water System: File provided by system.County GIS: County provided GIS layers.County W&S: Water & Sewer Plan Maps.SDWIS: Information from State database.", "geometryType": "esriGeometryPoint", "sourceSpatialReference": { "wkid": 102100, "latestWkid": 3857, "xyTolerance": 0.001, 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