The Michigan Department of Environmental Quality (MDEQ) announced the establishment of new drinking water criterion for perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS). The criterion, the first of its kind in Michigan for these compounds, is set at 70 parts per trillion (ppt) for the combined concentration of PFOA and PFOS for both residential and non-residential drinking water.