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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    Aquifer Protection Area

    Metadata Updated: August 2, 2025

    See full Data Guide here. Aquifer Protection Areas Set is a 1:24,000-scale, polygon feature-based layer that includes all Preliminary (Level B) and Final (Level A) Aquifer Protection Areas approved by the Connecticut Department of Energy and Environmental Protection (DEEP). These areas represent the land area contributing ground water to active public water supply wells or well fields that serve more than 1000 people that are set in sand and gravel aquifers (stratified drift deposits). These areas are commonly referred to as wellhead protection areas. The Aquifer Protection Areas were delineated by the individual water utilities owning the well fields and submitted to the DEEP for approval. The preliminary mapping provides a general estimate of the area contributing ground water to the well field. The final mapping is based on extensive, site-specific, detailed modeling of the ground water flow system. As the final mapping is completed it replaces the preliminary mapping. The layer is based on information collected and compiled from 1991 to the present. The layer depicts current conditions. Attribute information is comprised of codes to uniquely identify individual features, encode the aquifer protection area type and status, and cartographically represent area features on a map. Data is compiled at 1:24,000 scale. This data is updated as final mapping becomes available.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: Creative Commons CCZero

    Downloads & Resources

    Dates

    Metadata Created Date September 2, 2022
    Metadata Updated Date August 2, 2025

    Metadata Source

    Harvested from Connecticut Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date September 2, 2022
    Metadata Updated Date August 2, 2025
    Publisher Department of Energy & Environmental Protection
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=8a494fc64d8f460fa77771273be30925&sublayer=1
    Data First Published 2019-04-12
    Data Last Modified 2025-07-28
    Category geospatial
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.ct.gov/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 e8325580-57d1-4114-bfa2-a3f7bc40191a
    Harvest Source Id 36c82f29-4f54-495e-a878-2c07320bf10c
    Harvest Source Title Connecticut Data.json
    Homepage URL https://geodata.ct.gov/datasets/CTDEEP::aquifer-protection-area
    License https://creativecommons.org/publicdomain/zero/1.0
    Metadata Type geospatial
    Old Spatial -73.5512,41.0797,-71.8621,42.0327
    Source Datajson Identifier True
    Source Hash 9a105e695f09fdc9097e278f29e8a4dbb1bd8bd907a737257a6910ebef1ae692
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -73.5512, 41.0797, -73.5512, 42.0327, -71.8621, 42.0327, -71.8621, 41.0797, -73.5512, 41.0797}

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