GAMA/Nitrate2020 (MapServer)

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Service Description: Most recent detection for each well sampled since 2000. All sampled wells and all exceedances. For use in online nitrate tool.<div><br /></div><div><div>The availability of groundwater data is limited and domestic wells are not regulated, so domestic well water quality is largely unknown. Since domestic wells are typically shallower in depth as well, they are more susceptible to contamination at the land surface. If your property is nearby uses, manufacturing, or application of nitrate, you should have your well tested.</div><div><br /></div><div>The tool determines if your inputted location is within 2,000 feet of a nitrate-impacted well. If this tool determines that it is not, the State Water Board still recommends that you test your domestic well annually by a certified drinking water laboratory.</div><div><br /></div><div>You can also call your local county environmental management department or the State Water Board Division of Water Quality for any water quality questions. </div><div><br /></div><div>For the purposes of this interactive tool, a "nitrate-impacted well" means its most recent detection of nitrate was above the maximum contaminant level (MCL). To determine if your domestic well has nitrate above the MCL, you need to test your well. Please see the informative links provided and contact a drinking water laboratory to test the water quality in your well.</div><div><br /></div><div>Data used in this evaluation include the following data sets of water wells sampled for nitrate since the year 2000:</div><div><br /></div><div>State Water Board Division of Drinking Water (DDW) public water system wells</div><div>State Water Board GAMA Program (Priority Basin, Domestic Well, and Special Studies Projects)</div><div>Department of Water Resources (DWR)</div><div>U.S. Geological Survey National Water Information System (NWIS)</div><div>Local Groundwater Projects like R5 Dairies and R3 domestic well testing</div><div>All data are available at the GAMA Program's online groundwater information system.</div><div><br /></div><div>The datasets used for the map represent both the shallow and deep aquifer resources. The absence of an impacted well does not mean that nitrate contamination is not present.</div><div><br /></div><div>This map uses a third-party address-locating service (also known as a "geocoding service") which translates addresses to points on a map. This process, which does not match the address to the parcel, is only as accurate as the underlying street data, which varies depending on the area.</div><div><br /></div><div>This map is intended for general informational purposes only.</div></div><div><br /></div><div>This map image layer is accessible via its <a href='https://gispublic.waterboards.ca.gov/portalserver/rest/services/GAMA/Nitrate2020/MapServer' rel='nofollow ugc' target='_blank'>REST endpoint map service</a>.</div>

Map Name: NitrateTool

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All Layers and Tables

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Dynamic All Layers

Layers:

NitrateExceed (0)
NitrateAllSampled (1)

Description:

Service Item Id: 0df6ea4796bd434d9c43aecb385fef89

Copyright Text: Processed, gathered, and tool made by Dori Bellan, geologist, GAMA Program, November 2020.

Spatial Reference: 4326 (4326) LatestVCSWkid(0)

Single Fused Map Cache: false

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Units: esriDecimalDegrees

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

Document Info:

Supports Dynamic Layers: true

MaxRecordCount: 22000

MaxSelectionCount: 2000

MaxImageHeight: 4096

MaxImageWidth: 4096

Supported Query Formats: JSON, geoJSON, PBF

Supports Query Data Elements: true

Min Scale: 0

Max Scale: 0

Supports Datum Transformation: true

Child Resources: Info Dynamic Layer

Supported Operations: Export Map Identify QueryLegends QueryDomains Find Return Updates Generate KML