Contamination of Soil and Groundwater Due to Stormwater Infiltration Practices, A Literature Review
2008-06-23
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Contamination of Soil and Groundwater Due to Stormwater Infiltration Practices, A Literature Review
Published Date
2008-06-23
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St. Anthony Falls Laboratory
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Report
Abstract
Recently, there has been an increased interest in the use of infiltration as a method of managing
stormwater. Infiltration practices promote groundwater recharge, reduce runoff peak flows and
volumes, and can lessen the transport of non-point source pollutants to surface water bodies.
However, because stormwater infiltration systems are designed to discharge runoff into the soil,
there has been concern that pollutants present in stormwater could contaminate groundwater
wells. Thus, to understand the relative risks and benefits of infiltration, the fate of stormwater
pollutants must be well understood. The fate of contaminants infiltrated from stormwater runoff
and the potential for groundwater contamination was investigated by reviewing literature
published in peer-reviewed scientific and engineering journals. This review examines common
stormwater infiltration techniques, priority pollutants in urban stormwater runoff, and
investigates the fate of these pollutants after infiltration.
Priority pollutants in urban stormwater runoff include nutrients (i.e. nitrogen and phosphorus),
heavy metals (i.e. Pb, Zn, Cu, Cd), organics (e.g. petroleum hydrocarbons), pathogens,
suspended solids, and salts. The potential for groundwater contamination is a complex function
of soil and contaminant properties and the depth to the water table. Karst geology in particular
can provide pathways for rapid and extensive groundwater contamination from infiltration
systems.
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Minnesota Pollution Control Agency
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Weiss, Peter T.; LeFevre, Greg; Gulliver, John S.. (2008). Contamination of Soil and Groundwater Due to Stormwater Infiltration Practices, A Literature Review. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/115341.
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