A federal judge rejected a petition from environmental activists for more strict regulation of large livestock operations in a win for the U.S. meat industry. The U.S. Court of Appeals for the Ninth Circuit, based in San Francisco, threw out a lawsuit that would have changed how the Environmental Protection Agency regulates concentrated animal feeding operations. Pork producers applauded the decision. The lawsuit, filed and led by Food & Water Watch, challenged the EPA’s decision last year to deny a petition that would have required all farms to obtain permits to operate their CAFOs unless they could prove they’re not a source of pollution. In their petition, activist groups argued livestock operations are releasing pollution into waterways in violation of the Clean Water Act, and that the EPA has an obligation under federal law to regulate discharge of animal waste.