Large Data Bases and Regional Ground‐Water Quality Assessments ‐ An Iowa Case Study

摘要: Many state and federal agencies routinely collect ground-water quality data to meet a variety of objectives. The WATSTORE (Water Data Storage Retrieval System) files the U.S. Geological Survey containing raw from 4,388 wells MSIS (Model State Information EPA finished (blended and/or treated) groundwater 2,137 public water-supply sources are only two large computer-coded on Iowa quality. These bases, by themselves, provide significant insights regarding distribution chemicals in different hydrogeological environments compliance status PWS with reference drinking-water standards Iowa. With minor modifications, these bases can be integrated to: (a) statistical, spatial, temporal, geological summaries observed quality; (b) determine extent exposed populations various contaminants their concentrations; (c) necessary information reduce existing list include some those that not being monitored now; (d) identify gaps current data-gathering efforts prioritize components future monitoring programs; (e) potential linkages combined use quantity quality, socioeconomic, land-use,more » health data; (f) alert policy makers problems facing state. Some limitations need for integrating them is demonstrated comparative analysis evaluation.« less