2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/24/2018 | 12:15 PM - 12:30 PM | DETERMINING THE INFLUENCE OF WASTEWATER EFFLUENT ON PROXIMAL MICROBIAL COMMUNITY DYNAMICS IN FOURMILE CREEK (ANKENY, IOWA) | 330 A
DETERMINING THE INFLUENCE OF WASTEWATER EFFLUENT ON PROXIMAL MICROBIAL COMMUNITY DYNAMICS IN FOURMILE CREEK (ANKENY, IOWA)
The Ankeny (Iowa) Wastewater Treatment Plant (WWTP) continually released treated effluent to Fourmile Creek until the facility shutdown in 2013. Prior to WWTP shutdown, treated effluent contributed at times up to 99% of streamflow below the WWTP outfall. From 2012 to 2014, the USGS assessed pre- and post- shutdown chemical and hydrologic responses of the stream, sediment, and adjacent shallow groundwater. The USGS also characterized the microbial community (MC) composition and the relationship of MC dynamics to nutrient and trace organic chemistry. The downstream groundwater microbial communities were more similar to each other when compared to the upstream communities; however, there was significant variability among the downstream microbial communities with one site having greater bacterial diversity than the others. This particular groundwater site is screened across a redox interface which is typically associated with increased biodegradation activities. Understanding the chemical and hydrological conditions associated with these MC will provide a better understanding of how different factors in this system influence MC dynamics. Knowing "who's there?" within the MC provides information on what microbes are naturally present in a stream and how wastewater effluent may influence MC dynamics.
- Microbial
- Bacteria
- Water Quality
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Presenters/Authors
Carrie Givens
(), United States Geological Survey, cgivens@usgs.gov;
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Joseph Duris
(), United States Geological Survey, jwduris@usgs.gov;
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Laura Hubbard
(), United States Geological Survey, lhubbard@usgs.gov;
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Natasha Isaacs
(), United States Geological Survey, nisaacs@usgs.gov;
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Dana Kolpin
(), United States Geological Survey, dwkolpin@usgs.gov;
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Paul Bradley
(), United States Geological Survey, pbradley@usgs.gov;
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