Well Water Contaminants in North Carolina

The resources below display well water sampling data collected by the NC Department of Health and Human Services (NC DHHS) from October 1998 - May 2019. Search by contaminant or by county to view the concentrations of heavy metals that have been detected in private well water in each of North Carolina's 100 counties.

View by Contaminant

Expand the list on the right to display two maps for each contaminant. The first map displays the average concentration of the contaminant. The second map shows the percent of samples that are above the designated drinking water standard. For the number of wells tested in each county, refer to the county tables below.

Arsenic

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Barium

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Cadmium

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Chromium

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Copper

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Iron

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Lead

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Manganese

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Mercury

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Selenium

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Zinc

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Explore Further

For additional information on arsenic, cadmium, lead, and manganese, check out NC ENVIROSCAN. This mapping tool allows users to visualize trends, including sociodemographic information, environmental justice indicators, and health outcomes, across NC.


Data source: Eaves, L.A., Keil, A., Henry, A., Fry, R.C., 2021, “A dataset describing well water metal/metalloid contamination of private wells in North Carolina, 19982019″, https://doi.org/10.15139/S3/BDQG9O. UNC Dataverse, V1.