A congressional subcommittee questioned the Trump administration on Wednesday over its rollback of Obama-era Clean Water Act protections.
Last week, the Environmental Protection Agency repealed a 2015 rule that expanded the definition of "waters of the United States," or WOTUS, a definition intended to clarify which waterways and wetlands are federally regulated.
In prepared testimony delivered Wednesday, David Ross, an administrator in the EPA's water office, said the Obama-era rules "failed to adequately recognize, preserve, and protect the primary responsibilities and rights of states to manage their own land and water resources."
Congressional Democrats criticized the repeal, contending it will lead to more pollution and threaten drinking water. Oregon Rep. Peter DeFazio said industry "can dump whatever they want in [the water] because it's an economic value to them. And then it just flows over the border to another state. If their people want to drink it, that's their problem."
Courts had blocked the 2015 rule in 27 states, including Wyoming, Colorado, Idaho, Montana, Utah and Nevada.
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This story was produced by the Mountain West News Bureau, a collaboration between Wyoming Public Media, Boise State Public Radio in Idaho, KUER in Salt Lake City, KUNR in Reno, and KRCC and KUNC in Colorado.