Phase II -
(2019)

The next phase of statewide PFAS surveillance testing is slated to begin in May 2019 and run through October 2019. This effort will sample non-community public water supplies which were not part of Phase I, to assess the potential for PFAS impact in drinking water for expanded at-risk populations. Testing will be conducted for the following non-community supplies utilizing their own well or wells:

  • 7 Adult foster care providers
  • 237 Children’s camps
  • 302 Industries
  • 162 Medical care facilities
  • 5 Motels
  • 26 Offices
  • 5 Parks
  • 1 Residential development (non-community water supply)
  • 8 Seasonal Michigan Head Start programs that were not available during Phase I

In addition, Phase II will sample two more Type I community water supplies that were not available during Phase I. All Phase II sampling results will be provided on this page, once they are available. 

View details on test methods used (pdf).

The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has provided recommendations based on PFAS levels. Download this notification protocol (pdf).

Other PFAS testing initiatives for drinking water:


Understanding the Sample Results

Definitions of the information provided in the sampling results tables:

  • Population Served: The number of individuals served by the water supply.
  • Sample Date: The date samples were taken at the water supply.
  • Sample Number: The identification number that corresponds to the sample taken.
  • Raw Water or Treated Drinking Water: The location where the water sample was collected. If the table shows “Raw Water” the sample was taken directly from the well or water source. If the table shows “Treated Drinking Water” the sample was taken after the water passed through treatment system(s) the water supply has in place.
  • PFOA + PFOS (ppt): The amount of PFOA and PFOS added together.
    • If the results listed is “ND” the lab did not detect, or find, that PFAS was in the water sample.
  • Total Tested PFAS (ppt): The amount of all PFAS chemicals that were tested added together.
    • If the results listed is “ND” the lab did not detect, or find, that PFAS was in the water sample.
  • Method: The laboratory method used for analyzing the samples. For more information, please visit the Frequently Asked PFAS Questions Page.

*Results are provided in parts per trillion. A part per trillion (ppt) is the equivalent of 1 drop of water in 20 Olympic-size swimming pools

For support in communicating results to your customers, please visit our Toolkit for documents to assist in your outreach.

The table below shows testing results from the statewide sampling initiative for Michigan public water supplies. Additional results from the testing will be added as they become available.

The Public Water Supplies dataset is available for download on the data.Michigan.gov open data portal.