This is why you don't let the private sector self-regulate, by @DavidOAtkins

When the U.S. Environmental Protection Agency declared that a group of Texas homes near a gas-drilling operation didn’t have dangerous levels of methane in their water, it relied on tests conducted by the driller itself.

Now, independent tests from Duke University researchers have found combustible levels of methane in some of the wells, and homeowners want the EPA to re-open the case.

The previously undisclosed Duke testing illustrate the complaints of critics who say the agency is reluctant to sanction a booming industry that has pushed down energy prices for consumers, created thousands of jobs and buoyed the economy.

“I don’t understand why they would let the company that was accused of doing the wrongdoing conduct the tests,” said Shelly Perdue, who lives near the two wells in Weatherford, 60 miles (97 kilometers) west of Dallas. “It doesn’t make sense.”