| Abstract: | The Iowa groundwater-quality-monitoring program began in 1982. The program is operated by the U.S. Geological Survey in cooperation with the University of Iowa Hygienic Laboratory and the Iowa Department of Natural Resources. The objectives are to describe and assess the long-term chemical quality of the principal aquifers in Iowa and to direct water quality assessment and sampling toward regional groundwater-quality concerns. Six percent of the water samples collected from 515 individual shallow wells had nitrate concentrations larger than the maximum contaminant level for public drinking water of 10 mg/L as nitrogen. Eighteen percent of the samples had concentrations of nitrate between 5 and 19 mg/L as nitrogen. Water samples from 355 individual municipal wells less than 200 ft deep have been analyzed for pesticides at least once. Detectable concentrations of at least one pesticide, either alachlor, atrazine, cyanazine, dicamba, metolachlor, or metribuzine were detected in 20% of the samples. Atrazine was the most prevalent pesticide, detected in 18% of the samples. (USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 26798 |
| Citation Author: | Detroy, M. G.; Hunt, P. K.; Holub, M. A. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | vi, 31 p. :ill., maps ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 88-4123 |
| Citation Search Results Text: | Ground-water-quality-monitoring program in Iowa; nitrate and pesticides in shallow aquifers; 1989; WRI; 88-4123; Detroy, M. G.; Hunt, P. K.; Holub, M. A. |
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| Citation Year: | 1989 |
| Type: | citation/reference |
| Text: | Ground-water-quality-monitoring program in Iowa; nitrate and pesticides in shallow aquifers; 1989; WRI; 88-4123; Detroy, M. G.; Hunt, P. K.; Holub, M. A. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/wri/1988/4123/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/wri/1988/4123/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, |
