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    • Concentrations and associated method information for pharmaceutical contaminants analyzed in Fourmile Creek near Ankeny, Iowa, USA during the October 2012 to October 2014 wastewater treatment facility pre/post-closure assessment

    Metadata Updated: January 16, 2026

    The USGS conducted a combined wastewater facility pre/post-closure groundwater assessment adjacent to an effluent-impacted reach of Fourmile Creek, Ankeny, Iowa, USA. This data release includes pharmaceutical concentration data for Fourmile Creek determined by enzyme-linked immunosorbent assay (ELISA) and HPLC-MS/MS during the period October 2012 to October 2014, along with associated HPLC-MS/MS analyte and method performance information.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date January 12, 2026
    Metadata Updated Date January 16, 2026

    Metadata Source

    Harvested from DOI USGS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 12, 2026
    Metadata Updated Date January 16, 2026
    Publisher U.S. Geological Survey
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/USGS_57558c58e4b023b96ec1e89b
    Data Last Modified 2020-08-27T00:00:00Z
    Category geospatial
    Public Access Level public
    Bureau Code 010:12
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://ddi.doi.gov/usgs-data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Datagov Dedupe Retained 20260116201601
    Harvest Object Id 5e02b91a-52c9-499a-b653-963ae6fc329e
    Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
    Harvest Source Title DOI USGS DCAT-US
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": -93.647460933976, 41.644183478055, -93.647460933976, 41.738528468015, -93.49365234023, 41.738528468015, -93.49365234023, 41.644183478055, -93.647460933976, 41.644183478055}
    Source Datajson Identifier True
    Source Hash f32dd3bfc7fcb44a703b5ef0383f430df0897b0adb2e26bce6ce7e7e681dec5d
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -93.647460933976, 41.644183478055, -93.647460933976, 41.738528468015, -93.49365234023, 41.738528468015, -93.49365234023, 41.644183478055, -93.647460933976, 41.644183478055}

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