Michigan Dept. of Environment, Great Lakes, and EnergyAs of March 2021, a PFAS site is defined as a property where EGLE has a valid groundwater monitoring well sample result that exceeds one or more of Michigan's seven PFAS groundwater cleanup criteria, and based on data, EGLE has determined the property is the location of the source of PFAS contamination (e.g., fire training area where PFAS-containing foam was used). An area of interest is a general location identified where PFAS contamination is potentially in groundwater and may be impacting private drinking water wells. Areas of interest are evolving investigations with potentially expanding boundaries. Data is gathered and boundaries are expanded as necessary. This map represents areas of interest using point locations to approximate general areas. These points do not indicate precise locations and are meant for reference purposes only. Users should not assume that the point location fully represents the extent or specific limits of the area it symbolizes. For detailed spatial information, please contact the Area of Interest lead listed in the dataset. This data is live and updated as new PFAS sites or areas of interest are encountered. This data is used in the MPART: PFAS Geographic Information System ( item details ). For more information, please visit our State of Michigan PFAS Response website . For content related questions reach out to the site lead contact listed in the dataset. Submit feedback please reach out to EGLE-Maps@Michigan.gov . Field Name Field Description SiteOrAoi If the record is considered a site or an area of interest Name Name of the site or area of interest Address Physical address of the project site City City where the project is physically located ZipCode Zip code where the project is physically located County County where the site is physically located Type Describes the kind of site by type ResidentialWellsSampled Indicates whether residential wells have, or will be sampled (Domains = Yes, No, TBD, N/A) SiteLead Name of contact person SiteLeadEmail Contact person email SiteLeadPhone Contact person phone number WebpageSite URL to the site investigation summary WebpageAdditionalFiles URL to additional files related to the site Longitude X coordinate of the location Latitude Y coordinate of the location FacilityDate Date the site was published on the MPART websiteArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/1b33f350003a4a5aa781702d0740ce0d_1engState of Michigan Open Data PortalPublicMichigan PFAS Sites and Areas of Interest [Michigan]Web servicesMichiganLast Modified: 2026-01-08