Laura Hubbard
Laura Hubbard is a Research Hydrologist at the USGS Upper Midwest Water Science Center located in Madison, WI. Laura earned a B.S. in Geological Sciences from the University of Wisconsin and an M.S. in Earth Sciences (Hydrology) from Indiana University. As a co-lead of the Food Resources Integrated Science Team within the Ecosystems Mission Area, she has been involved in national studies investigating agricultural and urban contaminants in groundwater and surface water, including viruses and pathogens, per- and polyfluoroalkyl substances, hormones, disinfection by-products, and pharmaceuticals.
ABSTRACT: Per- and polyfluoroalkyl substances in food processing wastewater discharge: impacts to the receiving stream food web Process wastewaters from food, beverage, and feedstock facilities, although regulated, are an under-investigated environmental contaminant source. In 2018, food process wastewaters (FPWW) from 23 facilities in 17 U.S. states were sampled and demonstrated to contain a plethora of contaminants, including one soybean oilseed processing facility with 15 per/polyfluoroalkyl substances (PFAS) detected and a ΣPFAS concentration of 185 µg L-1 (6:2 fluorotelomer sulfonate concentration of 143 µg L-1). To assess PFAS impacts and uptake into the stream food web from the soybean oilseed processing facility, water, bed sediment, and tissue (whole organism) were sampled in the receiving stream both upstream and downstream of the wastewater discharge point (June 2021). Tissue analysis included benthic invertebrates, various fish species, riparian spiders, and macrophytes. Results documented an increase in the number of PFAS (0 to 23) and total concentrations (37.0 to 182 percent difference) in tissues upstream compared to those downstream of the wastewater discharge point. Results demonstrate the FPWW likely results in an increase of PFAS concentrations in species downstream and suggest feeding preferences may influence the number and concentration detected. This study provides a better understanding of potential deleterious effects of PFAS contamination from FPWW on the environmental health of receiving waters.
Laura E. Hubbarda, Dana W. Kolpinb, James L. Grayc, Amanda H. Bella, David J. Faziod, Jonathan R. Behrense
aUnited States Geological Survey, Madison, Wisconsin 53726, United States
bUnited States Geological Survey, Iowa City, Iowa 52240, United States
cUnited States Geological Survey, Lakewood, Colorado 80225, United States
dUnited States Geological Survey, Urbana, IL 61801, United States
eDuke University, Durham, NC 27708, United States