GAC Filter Project
GAC Filters Continue to Show Non-Detect Results for PFOS and PFOAThe newest round of test results of the municipal water system in Plainfield Charter Township collected on November 20 shows the drinking water continues to be non-detect for PFOS and PFOA as well as 10 other PFAS compounds sampled in that round. Township officials credit installation of the granular activated carbon filters for removing all traces of PFOS and PFOA from the municipal water system.
The tests are part of a pilot study funded by a $750,000 grant through the Michigan Department of Environmental Quality. With the successful installations of the GAC filters, the Township now has the capacity to remove PFAS from 9 million gallons of water per day. The plant is currently treating and pumping approximately 3 million gallons per day.
Throughout the process, water in each phase is carefully tested to prove the effectiveness of the filters in removing contaminants, pathogens and bacteria. Extensive testing will continue throughout the pilot, which will conclude in late 2019.
While trace amounts of PFOS and PFOA were detected in the water during the summer, the Plainfield Charter Township water system has been non-detect since early October when the latest GAC filters began operation, bringing the GAC filtration capacity up from 5 million gallons to 9 million gallons.
To learn more about the installation process, you can watch this video.