Kenneth C. Crowe II reports in the Times Union that Rensselaer County officials will hold an online public meeting at 5:30 p.m., Sept. 21 for town residents about the PFOA contamination found at two homes and the Algonquin Middle School. So far, the source of the PFOA contamination is a mystery, and a second round of testing of local drinking water tis taking place. Usually when PFOA is found, their is a logical industrial source such as in Hoosick Falls, or a fire-fighting training facility nearby, like in Cairo. In Poestenkill, there is no obvious source. “The virtual meeting on Sept. 21 will be an opportunity for the county to provide new information on a second round of testing in the area, and to answer questions from the public. Because the second round of testing is just starting, there will not be data available until late next month,” a Rensselaer County announcement read. PFOA is an acronym for perfluorooctanoic acid and is a variant of PFAS, or per- and polyfluoroalkyl substances. Both are extremely toxic. Read more about this story in the Times Union.