Louis Meeks’ well water contains methane gas, hydrocarbons, lead and copper, according to the EPA’s test results. When he drilled a new water well, it also showed contaminants. The drilling company Encana is supplying Meeks with drinking water. (Abrahm Lustgarten / ProPublica)

By Abrahm Lustgarten, ProPublica

Federal environment officials investigating drinking water contamination near the ranching town of Pavillion, Wyo., have found that at least three water wells contain a chemical used in the natural gas drilling process of hydraulic fracturing. Scientists also found traces of other contaminants, including oil, gas or metals, in 11 of 39 wells tested there since March.

The study, which is being conducted under the Environmental Protection Agency’s Superfund program, is the first time the EPA has undertaken its own water analysis in response to complaints of contamination in drilling areas, and it could be pivotal in the national debate over the role of natural gas in America’s energy policy. …

In interviews with ProPublica and at a public meeting this month in Pavillion’s community hall, officials spoke cautiously about their preliminary findings. They were careful to say they’re investigating a broad array of sources for the contamination, including agricultural activity. They said the contaminant causing the most concern – a compound called 2-butoxyethanol, known as 2-BE – can be found in some common household cleaners, not just in fracturing fluids. …

“It starts to finger-point stronger and stronger to the source being somehow related to the gas development, including, but not necessarily conclusively, hydraulic fracturing itself,” said Nathan Wiser, an EPA scientist and hydraulic fracturing expert who oversees enforcement for the underground injection control program under the Safe Drinking Water Act in the Rocky Mountain region. The investigation “could certainly have a focusing effect on a lot of folks in the Pavillion area as a nexus between hydraulic fracturing and water contamination.” …

EPA: Chemicals Found in Wyo. Drinking Water Might Be From Fracking via Democratic Underground