Karst waters are vulnerable to surface‐borne contaminants in a variety of land use settings, including urban, residential, and agricultural. A series of studies in the Sinkhole Plain of southwestern Illinois, which is primarily row‐crop agriculture but is undergoing increasing residential development, has indicated widespread contamination. Contaminants in the springs and cave streams are numerous, including nitrate, fecal bacteria, pharmaceuticals and personal care products (PPCPs), and steroidal hormones. The most commonly detected PPCPs were caffeine, triclocarban, carbamazepine, and gemfibrozil. Hormones were detected less frequently, with estrone being the most commonly detected. The source of the PPCPs and hormones is most likely discharge from septic systems and, in urban areas, leaking sewerage pipes. The results suggested that most samples were contaminated by a mixture of human and animal waste sources, with only a few samples showing pollution solely by humans or animals.
|Title of host publication
|2016 Pharmaceuticals & Personal Care Products in the Environment Conference
|Published - 2016