Characterization of aquifers designated as potential drinking-water sources in Mississippi

The Environmental Protection Agency has established that all ground water having a dissolved-solids concentration of less than 10,000 milligrams per liter is to be protected from injection of waste material. The Underground Injection Control program is intended to protect aquifers that are possible future sources of drinking water. Fourteen aquifers in Mississippi have been studied and their downdip limits for water containing 10 ,000 milligrams per liter dissolved solids have been delineated. Maps have been prepared showing the top, bottom, thickness, and potentiometric surface of the aquifers.