| snippet:
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Water quality risk per square mile section for use in the 2025 Aquifer Risk Map. These layers display estimated water quality risk for domestic wells and state small water systems, for use by the State Water Boards SAFER Program. |
| summary:
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Water quality risk per square mile section for use in the 2025 Aquifer Risk Map. These layers display estimated water quality risk for domestic wells and state small water systems, for use by the State Water Boards SAFER Program. |
| extent:
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[[-124.482016861124,32.528836736155],[-114.131222474723,42.0095082699266]] |
| accessInformation:
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This map was created using water quality data from GAMA Groundwater Information System (https://gamagroundwater.waterboards.ca.gov/gama/gamamap/public/), which pulls water quality data from a variety of sources. |
| thumbnail:
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thumbnail/thumbnail.png |
| maxScale:
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1.7976931348623157E308 |
| typeKeywords:
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["ArcGIS","ArcGIS Server","Data","Feature Access","Feature Service","providerSDS","Public Data Collection","Service"] |
| description:
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The Aquifer Risk Map is developed to fulfill requirements of SB-200 and is intended to help prioritize areas where domestic wells and state small water systems may be accessing groundwater that does not meet primary drinking water standards. In accordance with SB-200, the map is made available to the public and updated annually starting January 1, 2021. This layer is part of the 2025 Aquifer Risk Map. The Fund Expenditure Plan states the risk map will be used by Water Boards staff to help prioritize areas for available SAFER funding.</SPAN></P><P><SPAN>This service contains multiple layers:</SPAN></P><UL><LI><P><SPAN>State Small Water Systems - best available location information from Division of Drinking Water for state small water systems (5-14 connections) joined with water quality risk information from the 2025 Aquifer Risk Map</SPAN></P></LI><LI><P><SPAN>Source Water Quality Data - point location of wells used to calculate water quality risk estimates for the 2025 Aquifer Risk Map</SPAN></P></LI><LI><P><SPAN>Water Quality Risk by Section - water quality risk for all contaminants by square mile section, including estimated domestic well counts per section and estimated state small water system counts per section</SPAN></P></LI><LI><P><SPAN>Water Quality Risk by Section for five individual contaminants (nitrate, arsenic, uranium, hexavalent chromium, and 1,2,3-Trichloropropane)</SPAN></P></LI><LI><P><SPAN>Census Tracts - summarized demographic information from the 2023 American Community Survey five-year estimates (median household income - B19013_001E and race ethnicity - B03002) and summarized domestic well/state small water system risk information from the 2025 Aquifer Risk Map</SPAN></P></LI><LI><P><SPAN>Census Block Groups - summarized demographic information from the 2023 American Community Survey five-year estimates (median household income - B19013_001E and race ethnicity - B03002) and summarized domestic well/state small water system risk information from the 2025 Aquifer Risk Map</SPAN></P></LI></UL><P><SPAN>The water quality risk is based on depth-filtered, de-clustered water quality results from a variety of well types. For more information, please see the methodology write-up linked on the </SPAN><A href="https://gispublic.waterboards.ca.gov/portal/apps/experiencebuilder/experience/?id=18c7d253f0a44fd2a5c7bcfb42cc158d" STYLE="text-decoration:underline;"><SPAN>Aquifer Risk Map webpage </SPAN></A><SPAN>(https://gispublic.waterboards.ca.gov/portal/apps/experiencebuilder/experience/?id=18c7d253f0a44fd2a5c7bcfb42cc158d). To provide comments or feedback on this map, please email SAFER@waterboards.ca.gov or GAMA@waterboards.ca.gov.</SPAN></P><P><SPAN /></P><P><SPAN /></P></DIV></DIV></DIV> |
| licenseInfo:
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>All data resides on the State Water Board REST endpoint, and can also be requested by contacting the GAMA Unit at GAMA@waterboards.ca.gov.</SPAN></P></DIV></DIV></DIV> |
| catalogPath:
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|
| title:
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Water Quality Risk 2025 ARM |
| type:
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Feature Service |
| url:
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|
| tags:
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["SWRCB","GAMA","SAFER","domestic wells","groundwater","water quality","Aquifer Risk Map"] |
| culture:
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en-US |
| name:
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Water_Quality_Risk_2025_ARM |
| guid:
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63B9FE38-B3C2-49ED-9E83-3F515560556C |
| minScale:
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0 |
| spatialReference:
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WGS_1984_Web_Mercator_Auxiliary_Sphere |