2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/21/2019 | 12:15 PM - 12:30 PM | ANTIBIOTICS IN RURAL STREAMS AND GROUNDWATER IN THE PIEDMONT OF NORTH CAROLINA | 151 ABC
ANTIBIOTICS IN RURAL STREAMS AND GROUNDWATER IN THE PIEDMONT OF NORTH CAROLINA
Antibiotics are a class of contaminants that is gaining more attention. A great deal of attention regarding antibiotic pollution focuses on streams receiving wastewater effluent. In rural areas, antibiotics can enter streams from application in the maintenance of livestock or improper disposal practices and leaking septic tanks. Due to the interaction between surface water and groundwater throughout the stream networks, there’s a potential for contamination in both systems. The present study investigated 16 residential rural well sites (groundwater) and streams in Guilford, Randolph, and Alamance County, North Carolina. We detected 14 antibiotics over three seasons. Sulfamethoxazole, sulfamerazine, danofloxacin, and erythromycin were commonly detected throughout the sampling period. Concentrations ranged from 0-1000 ng/L in surface and groundwater, while sediment samples ranged from 0-98 ng/g. Fall surface water had significantly higher concentrations compared to spring (p<0.05). Groundwater had higher concentrations in winter compared to spring (p<0.05). Correlation analysis showed that animal density was positively correlated with antibiotic concentration. Findings from this study demonstrate that antibiotic pollution is widespread in rural systems and provide a basis for future studies investigating the occurrence of antibiotics in rural areas.
- Distribution
- Groundwater
- Pollution
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Presenters/Authors
Austin Gray
(), Duke University, adgray2@uncg.edu;
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Daniel Todd
(), University of North Carolina at Greensboro, datodd3@uncg.edu;
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Anne Hershey
(), The University of North Carolina at Greensboro, aehershe@uncg.edu;
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