Water quality studied in areas of unconventional oil and gas development, including areas where hydraulic fracturing techniques are used, in the United States
Maps showing number of water quality samples in areas underlain by unconventional oil and gas resources, broken out by surface water and groundwater.
U.S. Geological Survey Fact Sheet 2012-3049
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- States or counties
Alabama, Alaska, Arkansas, California, Colorado, Connecticut, Illinois, Indiana, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Mississippi, Montana, Nebraska, New Hampshire, New Jersey, New Mexico, New York, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wyoming
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