Two associations that represent the interests of wastewater treatment and water reclamation plant operators are unlikely to succeed on their claims challenging the federal government’s approval of California’s new water quality standards, a federal judge in the state ruled Monday. On May 22, Clean Water SoCal and the Central Valley Clean Water Association — groups with member agencies that own and operate wastewater treatment and water reclamation plants — sued the U.S. Environmental Protection Agency and Tomas Torres, director of EPA’s Region IX, over the approval of California’s new water toxicity provisions.