The Ground-Water Pollution Potential of Dry Wells in Pima County, Arizona

Abstract

Preface: Tucson Water, the City of Tucson, funded two phases of a project to evaluate the potential of dry wells in the Tucson area to pollute ground water. The first phase entailed inventorying existing dry wells in the area and assessing pollutants in settling chamber sediment in candidate wells from the three major classes of wells, industrial, commercial, and residential. The second phase of the study involved detailed investigations at "worst case" industrial and commercial sites. Similar studies at a residential (apartment complex) site were funded by Pima County Department of Transportation and Flood Control District. This document reports the results of the second phase studies.