Concentrations of dissolved radon-222 in water from selected wells and springs in Idaho, 1989-91

Abstract

Concentrations of dissolved radon-222, a naturally occurring radioactive gas, are found in water in Idaho. The U.S. Geological Survey collected water samples for radon-222 analyses from 338 Idaho wells and springs during 1989-91. These water samples were collected as part of ongoing monitoring programs with the Idaho Department of Water Resources and the U.S. Department of Energy. Concentrations of dissolved radon-222 in 372 of the water samples ranged from-58±30 to 5,715±66 picocuries per liter; the mean and median concentrations were 446±35 and 242±25 picocuries per liter, respectively.