Quality of water from public-supply wells in principal aquifers of Illinois, 1984-87
Water-Resources Investigations Report
88-4111
By: David C. Voelker
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Abstract
The quality of water from public-supply wells that tap the principal aquifers in Illinois are summarized. Water quality data collected during the study included inorganic and volatile organic constituents in 2,756 samples and soluble organic constituents in 330 samples from 2,080 public supply wells. Water quality differs among the aquifers as well as within each aquifer. Groundwater quality generally is suitable for most domestic uses; however, concentrations of iron, dissolved solids , and manganese commonly exceed the States 's general-use and public--and food-processing water supply standards. Water from some wells also contains concentrations of barium, chloride, fluoride, and sulfates that exceed those State standards. Most of these conditions are considered to be the result of natural processes. Volatile organic compounds occurred in more than 300 of the 2,756 samples collected. The sand and gravel aquifers generally are the most susceptible to human-induced contamination; 172 of the 1,047 samples from these aquifers indicate the presence of at least one volatile organic compound. Soluble organic compounds analyzed for included more than 30 pesticides, herbicides, and polychlorinated biphenyls (PCB's). Of the 330 wells sampled, water from only 8 wells had quantifiable concentrations of soluble organic compounds. Water from five wells contained metolachlor, atrazine, alachlor, cyanazine, and metribuzin. Water from three wells contained detectable levels of PCB's. The presence of these soluble organics appears to be limited to wells located near sources of potential contamination. Soluble organic compounds were detected only in wells located near sources of potential contamination. Soluble organic compounds were detected only in wells open to the sand and gravel aquifers. (USGS)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Quality of water from public-supply wells in principal aquifers of Illinois, 1984-87 |
| Series title | Water-Resources Investigations Report |
| Series number | 88-4111 |
| DOI | 10.3133/wri884111 |
| Edition | - |
| Year Published | 1989 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey, |
| Description | v, 29 p. :ill., maps ;28 cm. |
| Google Analytic Metrics | Metrics page |