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Data for Fluoride Occurrence in United States Groundwater

Published by U.S. Geological Survey | Department of the Interior | Catalog Last Checked: May 05, 2026 at 08:01 PM | Dataset Last Updated: August 14, 2020 at 12:00 AM
Data from 38,105 wells were used to characterize fluoride occurrence in untreated United States groundwater. The data were retrieved from the U.S. Geological Survey (USGS) National Water Information System (NWIS). Groundwater samples were collected from 1988 to 2017 in the conterminous United States. Data for groundwater included in this dataset are pH, water temperature, and concentrations of dissolved oxygen, calcium, magnesium, potassium, sodium, alkalinity, chloride, fluoride, silica, sulfate, aluminum, iron, manganese, and total dissolved solids.

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