House Science Committee Chairman Lamar Smith (R-Texas) is weighing legislation to alter the scope of the Environmental Protection Agency’s (EPA) study on the impact of oil-and-gas “fracking” on drinking water.

Smith, who said the EPA has been “complicit” in efforts to undercut gas production enabled by hydraulic fracturing, said he fears the study’s design does not put risks in their proper context.

“I am concerned that the EPA has failed to include a risk assessment as part of this study, instead choosing to simply identify potential risk without providing any context or consideration of their likelihood,” Smith said at a committee hearing Wednesday, adding this makes the study less objective and useful.

“The agency should base its work on sound science rather than regulatory ambition. However, if the agency fails to do this, a legislative remedy may be warranted to address the study’s deficiencies,” Smith added.