This surficial aquifer is underlain by the Copper Marl, which acts as a confining layer in the area and separates the surficial aquifer from lower formations. Groundwater is a major source of water supply in the vicinity of the site for residential and commercial use. Groundwater flow across the site is generally to the west and northwest, discharging to surface waters in the wetlands of the Wallace River drainage basin. The residences to the east, northeast and southwest of the site used to obtain their water from private wells. Most of these wells were located upgradient of the site.
Municipal water is now available to residents.
Two freshwater ponds are located on the site. The site topography indicates that the ponds are recharged by shallow groundwater. Fish living in the pond include largemouth bass. The amounts of fish caught and consumed from this pond is not known. No health outcome data for the Geiger site is available for review as of May, 1992.