Oct 4, 2023 · This website section provides information on PFAS particularly oriented toward private wells and the water well industry to help you understand the sources and occurrence of …

Oct 24, 2024 · We present an extreme gradient–boosting model for predicting the occurrence of PFAS in groundwater at the depths of drinking water supply for the conterminous United States.

Sep 20, 2021 · An examination of all available literature on PFAS soil-to-groundwater chemical partitioning has revealed that the standard approaches used by EPA’s regions and state …

Jun 15, 2021 · The sources of PFAS in groundwater may include surface water, soil, atmospheric deposition and the precipitation of snow, ice and rainfalls. Due to drinking water abstraction …

On December 19, 2019, EPA issued Interim Recommendations for Addressing Groundwater Contaminated with Perfluorooctanoic Acid (PFOA) and Perfluorooctanesulfonate (PFOS) that …

Oct 24, 2024 · People in the United States may unknowingly be drinking water that contains PFAS because of a lack of systematic analysis, particularly in domestic water supplies. We …

Feb 3, 2022 · The contamination of groundwater with perfluoroalkyl and polyfluoroalkyl substances (PFAS) is a concern in many countries because PFAS persist in the environment, …

Dec 20, 2019 · The agency is also validating analytical methods for surface water, ground water, wastewater, soils, sediments and biosolids; developing new methods to test for PFAS in air …

Nov 30, 2021 · These include the potential impact of PFAS precursors on groundwater plumes of perfluoroalkyl acids (PFAAs). Numerical modeling results show that, by adjusting the mass …

Oct 24, 2024 · PEMBROKE, N.H. — Approximately 71 to 95 million people in the Lower 48 states – more than 20% of the country’s population – may rely on groundwater that contains …