Ground Water - Water Quality Results

<p>This file contains statewide locations of wells with water quality data for all datasets. For more information about GAMA datasets, please refer to the **[dataset description]( https://gamagroundwater.waterboards.ca.gov/gama/GAMA_Data_Descriptions.pdf)** file on the **[GAMA data download page](https://gamagroundwater.waterboards.ca.gov/gama/datadownload)**.</p>

<p>This file contains statewide groundwater quality data for all chemicals in the Department of Pesticide Regulation dataset. For more information about GAMA datasets, please refer to the **[dataset description]( https://gamagroundwater.waterboards.ca.gov/gama/GAMA_Data_Descriptions.pdf)** file on the **[GAMA data download page](https://gamagroundwater.waterboards.ca.gov/gama/datadownload)**.</p>

<p>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)**

This file contains statewide groundwater quality data for all chemicals in the GAMA Division of Drinking Water (DDW) dataset. It contains data from public supply wells. Due to size constraints, the DDW data is split up by date. This file contains DDW data up to 1/1/2000.

This file contains statewide groundwater quality data for all chemicals in the GAMA Division of Drinking Water (DDW) dataset. It contains data from public supply wells. Due to size constraints, the DDW data is split up by date. This file contains DDW data from 1/1/2000 to 12/31/2009.

This file contains statewide groundwater quality data for all chemicals in the GAMA Division of Drinking Water (DDW) dataset. It contains data from public supply wells. Due to size constraints, the DDW data is split up by date. This file contains DDW data from 1/1/2010 to 12/31/2019.

This file contains statewide groundwater quality data for all chemicals in the GAMA Division of Drinking Water (DDW) dataset. It contains data from public supply wells. Due to size constraints, the DDW data is split up by date. This file contains DDW data from 1/1/2020 to present.

<p>This file contains statewide groundwater quality data for all chemicals in the GAMA Domestic Wells, GAMA Special Projects, and GAMA USGS datasets. For more information about GAMA datasets, please refer to the **[dataset description]( https://gamagroundwater.waterboards.ca.gov/gama/GAMA_Data_Descriptions.pdf)** file on the **[GAMA data download page](https://gamagroundwater.waterboards.ca.gov/gama/datadownload)**.</p>

<p>This file contains statewide groundwater quality data for all chemicals in the Irrigated Lands Regulatory Program dataset. For more information about GAMA datasets, please refer to the **[dataset description]( https://gamagroundwater.waterboards.ca.gov/gama/GAMA_Data_Descriptions.pdf)** file on the **[GAMA data download page](https://gamagroundwater.waterboards.ca.gov/gama/datadownload)**.</p>

m<p>This file contains statewide groundwater quality data for all chemicals in the Local Groundwater Projects dataset. For more information about GAMA datasets, please refer to the **[dataset description]( https://gamagroundwater.waterboards.ca.gov/gama/GAMA_Data_Descriptions.pdf)** file on the **[GAMA data download page](https://gamagroundwater.waterboards.ca.gov/gama/datadownload)**.</p>

<p>This file contains statewide groundwater quality data for all PFAS constituents (all datasets included). For more information about GAMA datasets, please refer to the **[dataset description]( https://gamagroundwater.waterboards.ca.gov/gama/GAMA_Data_Descriptions.pdf)** file on the **[GAMA data download page](https://gamagroundwater.waterboards.ca.gov/gama/datadownload)**.</p>

<p>This file contains statewide groundwater quality data for all chemicals in the USGS_NWIS dataset. For more information about GAMA datasets, please refer to the **[dataset description]( https://gamagroundwater.waterboards.ca.gov/gama/GAMA_Data_Descriptions.pdf)** file on the **[GAMA data download page](https://gamagroundwater.waterboards.ca.gov/gama/datadownload)**.</p>

<p>This file contains groundwater quality data for all chemicals in the Water Replenishment District dataset (Los Angeles County). For more information about GAMA datasets, please refer to the **[dataset description]( https://gamagroundwater.waterboards.ca.gov/gama/GAMA_Data_Descriptions.pdf)** file on the **[GAMA data download page](https://gamagroundwater.waterboards.ca.gov/gama/datadownload)**.</p>

<p>This file contains groundwater quality data for wells used in the **[Natural Recharge Study](https://gispublic.waterboards.ca.gov/portal/apps/storymaps/stories/101aac57c3514f038eef44587eee8a93)**. For more information about GAMA datasets, please refer to the **[dataset description]( https://gamagroundwater.waterboards.ca.gov/gama/GAMA_Data_Descriptions.pdf)** file on the **[GAMA data download page](https://gamagroundwater.waterboards.ca.gov/gama/datadownload)**.</p> This file is no longer being updated.

This file contains groundwater quality data for wells used in the [Aquifer Recharge and Groundwater Quality (ARGQ) Dashboard](https://gispublic.waterboards.ca.gov/portal/apps/experiencebuilder/experience/?id=ca0c0c70a69e481589fed4e7ee345558). The selected wells and water quality data were filtered from GAMA GIS based on a minimum number of 8 results per constituent since 2014 and with the most recent sample from 2024. <br> For more information about GAMA datasets, please refer to the [dataset description](https://gamagroundwater.waterboards.ca.gov/gama/GAMA_Data_Descriptions.pdf) file on the [GAMA data download page](https://gamagroundwater.waterboards.ca.gov/gama/datadownload).