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    • National Recommended Water Quality Criteria

    Metadata Updated: February 10, 2026

    The National Recommended Water Quality Criteria is a compilation of national recommended water quality criteria for the protection of aquatic life and human health in surface water for approximately 150 pollutants. These criteria provide guidance for states and tribes to use in adopting water quality standards.

    Access & Use Information

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

    Downloads & Resources

    References

    https://www.epa.gov/wqc/national-recommended-water-quality-criteria-tables
    https://edg.epa.gov/metadata/rest/document?id=%7BEC131FBC-B7D8-4AAD-A061-E9060FD25E50%7D
    https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7BEC131FBC-B7D8-4AAD-A061-E9060FD25E50%7D

    Dates

    Metadata Created Date January 30, 2026
    Metadata Updated Date February 10, 2026

    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)
    Maintainer
    Identifier {EC131FBC-B7D8-4AAD-A061-E9060FD25E50}
    Data First Published 2014-01-01
    Data Last Modified 2014-01-01
    Public Access Level public
    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 5c1d8618-1a35-46aa-a491-196e8abfdf91
    Harvest Source Id 9c1c2b5b-7925-4ca2-a663-ca2131653db1
    Harvest Source Title EPA Non Geo Repository
    Homepage URL https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7BEC131FBC-B7D8-4AAD-A061-E9060FD25E50%7D
    License https://edg.epa.gov/EPA_Data_License.html
    Old Spatial -180.0,18.0,-66.0,72.0
    Program Code 020:072
    Related Documents https://www.epa.gov/wqc/national-recommended-water-quality-criteria-tables, https://edg.epa.gov/metadata/rest/document?id=%7BEC131FBC-B7D8-4AAD-A061-E9060FD25E50%7D, https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=%7BEC131FBC-B7D8-4AAD-A061-E9060FD25E50%7D
    Source Datajson Identifier True
    Source Hash da19e0f341e3fda9522fac30aa44ea3214b485e598a9fc8d3ea6a16284612634
    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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