Per- and polyfluoroalkyl substance concentrations, age estimates, redox categories, and related data for groundwater from the Great Miami buried-valley aquifer, southwestern Ohio, 2019–20

Publication Date

2023-03-09

Start Date

1999

End Date

2020

Buszka, P.M., Mathes, N.A., and Mailot, B.E., 2023, Per- and polyfluoroalkyl substance concentrations, age estimates, redox categories, and related data for groundwater from the Great Miami buried-valley aquifer, southwestern Ohio, 2019–20, 2019–20: U.S. Geological Survey data release, https://doi.org/10.5066/P9J7H3LB.

Type: Related Primary Publication

These data were collected and compiled to describe concentrations of PFAS in groundwater relative to prevailing Ohio action levels and Federal health risk-based guidances from 23 shallow wells in the Great Miami buried-valley aquifer (GM-BVA) of southwestern Ohio in the Great Miami River, Little Miami River, and Whitewater RIver Basins. To understand the comparability of PFAS analytical results generated through different adaptations of the EPA 537.1 method, groundwater samples were collected by this study and analyzed at a contract laboratory using one proprietary adaptation (method 1; Bureau Veritas, Mississauga, Ontario, Canada) and were collected from the same wells and analyzed at a different contract laboratory by a slightly different proprietary adaptation (method 2; SGS North America Inc., Orlando, Florida). Methods 1 and 2 had different reporting limits and detection limits for specific PFAS. Quality-control samples were collected and analyzed to evaluate reproducibility of PFAS analytical results and to understand the effect of sample preparation processes on PFAS results in groundwater samples. Prior published tritium-helium-3 and tritium-based estimates of groundwater-recharge age from water sampling of these wells in1999 and 2000 and tritium-only groundwater-age categories of samples collected from these wells in 2019 and 2020 were compiled to compare with PFAS occurrence in groundwater and the general history of synthesis, common use and potential environmental release of PFAS. Redox conditions of prior groundwater samples and samples collected by this study were computed to understand PFAS detections relative to potential redox conditions known or suspected to affect their environmental persistence. Field groundwater-quality parameters were reported to permit comparison with PFAS detections in samples collected from the same wells.

ScienceBase WMS

• Ohio-Kentucky-Indiana Water Science Center
• USGS Data Release Products