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State of California Open Data

GAMA - Department of Water Resources

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Published by:
California State Water Resources Control Board
Last updated:
October 13, 2025
File details:
307.65 MB
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Description:

This file contains statewide groundwater quality data for all chemicals in the Department of Water Resources dataset. For more information about GAMA datasets, please refer to the **[dataset description]( https://gamagroundwater.waterboards.ca.gov/gama/GAMA_Data_Descriptions.pdf)**

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API endpoint

Dataset Name

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Usage documentation