Groundwater and Aquifers - 5 of 13
Groundwater and Aquifers FAQs - 13 Found
Volatile organic compounds (VOCs), which are widely used in the manufacture of many products including refrigerants, plastics, adhesives, paints, and petroleum products, have been detected in about one-third of the wells sampled by the National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey (USGS). Chloroform and other trihalomethanes, the most commonly detected compounds, were found in about 9 percent of the sampled wells. Solvents, particularly chlorinated solvents, were found in about 8 percent of sampled wells. VOCs predominantly occur in urban areas, often in mixtures; specifically, 2 or more compounds were found in about one quarter of the sampled urban wells.