Revision History for U.S. Geological Survey Fact Sheet 2017-3040

By Bruce Lindsey

Groundwater Quality in the Piedmont and Blue Ridge Crystalline-Rock Aquifers, Eastern United States

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Posted online December 7, 2017

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Revised and reposted September 16, 2020


The following changes were made to the fact sheet:

On the front page, the version number "ver. 1.1" was added and the month of publication was changed from "May 2017" to "September 2020."

On page 3, in the table, the constituents Chloride and Sulfate, including its benchmark data, was deleted.