A pilot study to assess the influence of infiltrated stormwater on groundwater: Hydrology and trace organic contaminants
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Abstract
Underground infiltration basins (UIBs) mimic the natural hydrologic cycle by allowing stormwater to recharge local groundwater aquifers. However, little is known about the potential transport of organic contaminants to receiving groundwater. We conducted a pilot study in which we collected paired grab samples of stormwater runoff flowing into two UIBs (inflow) and shallow groundwater adjacent to the UIBs. Samples were collected coincident with three rain events and analyzed for volatile organic compounds, semi-volatile organic compounds, pharmaceuticals, and pesticides. Few contaminants were detected in groundwater, compared with inflow, and groundwater concentrations were typically an order of magnitude less. With one exception (trichloroethene), all groundwater concentrations were at least two orders of magnitude below available guidance or screening values. This short communication highlights information gaps in understanding the hydrologic connectivity between UIBs and receiving groundwater and potential consequent contaminant transport to the subsurface from varying climatic conditions.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | A pilot study to assess the influence of infiltrated stormwater on groundwater: Hydrology and trace organic contaminants |
| Series title | Water Environment Research |
| DOI | 10.1002/wer.10690 |
| Volume | 94 |
| Issue | 2 |
| Year Published | 2022 |
| Language | English |
| Publisher | Water Environment Federation |
| Contributing office(s) | Upper Midwest Water Science Center |
| Description | e10690, 9 p. |
| Country | United States |
| State | Minnesota |
| City | Minneapolis-St. Paul |
| Google Analytic Metrics | Metrics page |