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

    Ground Water - Water Quality Results

    Metadata Updated: August 23, 2025

    Groundwater quality data and related groundwater well information available on the page was queried from the GAMA Groundwater information system (GAMA GIS). Data provided represent a collection of groundwater quality results from various federal, state, and local groundwater sources. Results have been filtered to only represent untreated sampling results for the purpose of characterizing ambient conditions.

    Data have been standardized across multiple data sets including chemical names and units. Standardization has not been performed for chemical result modifier and others (although we are working currently to standardize most fields). Chemicals that have been standardized are included in the data sets. Therefore, other chemicals have been analyzed for but are not included in GAMA downloads. Groundwater samples have been collected from well types including domestic, irrigation, monitoring, municipal. Wells that cannot accurately be attributed to a category are labeled as "water supply, other".

    For additional information regarding the GAMA GIS data system please reference our factsheet.

    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: No license information was provided.

    Downloads & Resources

    Dates

    Metadata Created Date July 23, 2021
    Metadata Updated Date August 23, 2025

    Metadata Source

    Harvested from State of California

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date July 23, 2021
    Metadata Updated Date August 23, 2025
    Publisher California State Water Resources Control Board
    Maintainer
    Identifier 81d1347c-891d-4f09-abc5-6eeb521b55d2
    Data First Published 2019-08-10T03:59:27.974358
    Data Last Modified 2025-08-07T19:34:26.323767
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    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 6862c102-372a-48f4-beda-54a5b64097f9
    Harvest Source Id 3ba8a0c1-5dc2-4897-940f-81922d3cf8bc
    Harvest Source Title State of California
    Source Datajson Identifier True
    Source Hash 9aab2be59d6adbc464f13fc9a7810cdb0418c3165571c53728cdc143b288c236
    Source Schema Version 1.1

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