RFF Staff:
An RFF survey of public opinion in Pennsylvania and Texas about shale gas development risks revealed that 41 and 31 percent of respondents, respectively, are “extremely concerned or very concerned” about risks to groundwater and surface water sources. The survey also showed that the public is willing to pay to reduce such risks—on average, $25 to $30 per year per household for every 1,000 fewer drinking water wells with problems.
Here is "Figure 2. Willingness to Pay, on Average, for Shale Gas Risk Reductions" from the link in the excerpt:
