Statewide Testing Initiative

MDEQ PFAS Public Water Supply & School Sampling Percentage of Completion by CountyMDEQ Projected Public Water Supply Sampling Schedule
MDEQ PFAS Public Water Supply & School Sampling Percentage
of Completion by County
(as of August 31, 2018) Click on the map
to see the status of the statewide public water supply and schools
that operate their own wells. Also available is the projected public
water supply sampling schedule
.

The Michigan Department of Environmental Quality (MDEQ) has begun a statewide initiative to test drinking water from all schools that use well water and community water supplies for PFAS. MDEQ is taking this precautionary step of testing these drinking water sources to determine if public health actions are needed. Information on this page summarizes current sampling results from these locations.

It is not uncommon to find low levels of PFAS in drinking water supplies, as PFAS can be found in fire-fighting foams, stain repellants, nonstick cookware, waterproof clothing, food wrappers, and many other household products. They do not break down in the environment and move easily into water.

The EPA set a lifetime health advisory (LHA) level for two PFAS in drinking water, perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS). The LHA level is 70 parts per trillion (ppt, equal to 70 ng/L) for PFOA and PFOS combined, or individually if only one is present. The EPA has not set health advisory levels for other PFAS chemicals. The State of Michigan is using 70 ppt for decision making purposes.

 

 

Statewide Sampling Initiative Testing Results for Public Water Supplies
Public Water Supplies screen shot

Statewide Sampling Initiative Testing Results for Schools
Schools on Their Own Well dataset screen shot

Public Water Supply Testing Results Prior to Statewide Sampling Initiative
Public Water Supply Testing Results screenshot