The problem is that treating oil and gas waste from
fracked wells remains particularly tricky because the industry is still allowed to keep secret information about which chemicals drillers use when injecting fluids to crack open shale formations to release oil and gas.
The study was funded by EnCana, the drilling company whose
wells the EPA had initially blamed for the contamination.Though the role of
fracking remains contested, the advising scientists recommend that the EPA should qualify its conclusions about the risks posed by acknowledging gaps in the existing data and concerning cases like Pavillion.