Per the Town of Poolesville: “In Poolesville’s water system, elevated levels of PFOA or PFOS were detected in the water samples collected from Well 2 and Well 3. A Tier 2 Public Health Advisory Notice was mailed to every resident. While there are no national or state Maximum Contaminant Levels (MCLs) for PFAS in drinking water, the EPA released interim health advisories for PFOA and PFOS. For this reason, we have taken Wells 2 and 3 offline.” Full press release available below:
Per- and polyfluoroalkyl substances, also known as PFAS, are a group of over 5,000 human made compounds. Used since the 1940s, PFAS compounds can be in a wide range of consumer and industrial products and processes. PFAS released to the air, soils, ground- or surface water can enter into nearby drinking water sources. To assess the presence of PFAS in state drinking water sources, the Maryland Department of the Environment (MDE) has initiated an assessment from 137 selected Community Water Systems. These Community Water Systems were selected by the proximity, number, and type of potential sources of PFAS MDE mapped over 2,000 potential sources of PFAS in Maryland. The 2,000 potential sources include military installations, fire training areas, airports, landfills, manufacturing facilities, and wastewater treatment plants.