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    • National Contaminant Occurrence Database (NCOD)

    Metadata Updated: February 10, 2026

    NCOD is a repository of drinking water quality data to be made available to EPA decision makers and the public.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    No file downloads have been provided. The publisher may provide downloads in the future or they may be available from their other links.

    References

    https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7B9BCA73D0-85ED-464B-9C49-ADB605F5C899%7D
    https://edg.epa.gov/metadata/rest/document?id=%7B9BCA73D0-85ED-464B-9C49-ADB605F5C899%7D

    Dates

    Metadata Created Date January 30, 2026
    Metadata Updated Date February 10, 2026
    Data Update Frequency irregular

    Metadata Source

    Harvested from EPA Non Geo Repository

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 30, 2026
    Metadata Updated Date February 10, 2026
    Publisher U.S. EPA Office of Water (OW) - Office of Ground Water and Drinking Water (OGWDW)
    Maintainer
    Identifier 9BCA73D0-85ED-464B-9C49-ADB605F5C899
    Data First Published 2014-01-01
    Data Last Modified 2013-11-05
    Public Access Level public
    Data Update Frequency irregular
    Bureau Code 020:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://edg.epa.gov/data/nongeo_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
    Harvest Object Id a05ffce4-475f-431c-b67e-45cf68c5307e
    Harvest Source Id 9c1c2b5b-7925-4ca2-a663-ca2131653db1
    Harvest Source Title EPA Non Geo Repository
    License https://edg.epa.gov/EPA_Data_License.htm
    Old Spatial -180.0,18.0,-66.0,72.0
    Program Code 020:072
    Related Documents https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7B9BCA73D0-85ED-464B-9C49-ADB605F5C899%7D, https://edg.epa.gov/metadata/rest/document?id=%7B9BCA73D0-85ED-464B-9C49-ADB605F5C899%7D
    Source Datajson Identifier True
    Source Hash bb66d3a376d8585039fbdc35829dd2fca3a3562c6030abd0ad7d2552805d8ccd
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -180.0, 18.0, -180.0, 72.0, -66.0, 72.0, -66.0, 18.0, -180.0, 18.0}

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