MS4GIS - ArcGIS for your NPDES program Q. What is MS4GIS?A. An easy to use NPDES data management system built on the familiar ESRI ArcGIS platform.Q. What can MS4GIS do for my stormwater program?A. With MS4GIS you can manage all information for your Illicit Discharge and Detection (IDDE) progr Ms4gis.net~Site InfoWhoisTrace RouteRBL Check