The outlook for new U.S. Environmental Protection Agency guidance aimed at streamlining permit approvals for natural gas pipelines and other energy infrastructure projects is murky, at best, and could lead to more frequent legal skirmishes, some observers say.

Water recycling and other forms of reuse—such as direct potable reuse—have become mainstream enough to attract the attention of the U.S. Environmental Protection Agency.

It will take more than a year to finalize a rewrite of the controversial WOTUS, which then faces dozens of lawsuits.