Water quality; Water-supply; Wellhead protection.
ABSTRACT-Setting priorities to schedule and implement wellhead protection programs for municipal and community drinking water supplies is presented in the framework of a general risk assessment approach. This includes a hazard identification procedure representing the likelihood of contaminants being released to the surface environment, a hydrogeologic vulnerability assessment representing the risk of contaminants entering the groundwater supply, and an impact assessment, strongly linked to the population at risk. A methodology was developed to aggregate information on a county basis for Minnesota. The resulting composite risk index map shows a number of counties in the central part of the state roughly following a line from the Twin Cities Metropolitan area along two major transportation axes to the St. Cloud and Fargo-Moorhead area, and toward the south to the Rochester-Austin area to which a high priority for phasing-in of the program is recommended. These counties emerge in addition to those in the southeastern karst area of Minnesota that traditionally have been identified as vulnerable areas.
Pfannkuch, H. O.,
Campion, M. E.,
McCaa, D. C.,
Palenberg, J. M.
County-Based Priority Assessment Methodology for Phasing of Wellhead Protection Programs.
Journal of the Minnesota Academy of Science, Vol. 55 No.1, 63-70.
Retrieved from https://digitalcommons.morris.umn.edu/jmas/vol55/iss1/11