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The Central Oklahoma Aquifer is the principal source of ground water for municipal, industrial, and rural use in central Oklahoma. Arsenic, chromium, and selenium are found in the ground water in concentrations that, in places, exceed the Environmental Protection Agency's primary drinking-water standards. Gross-alpha concentrations also exceed the primary standards in some wells, and uranium concentrations are uncommonly high in places. As a prerequisite to a surface and subsurface solid-phase geochemical study, this report summarizes the general geology and results of previously reported solid-phase geochemical studies that relate to the vicinity of the Central Oklahoma Aquifer; including a summary of the analytical results and distribution plots for As, Se, Cr, Th, U, Cu, and Ba from the US Department of Energy's National Uranium Resource Evaluation Program.

Review of the general geology and solid-phase geochemical studies in the vicinity of the Central Oklahoma aquifer