(June 18, 2019, 2:14 PM EDT) -- WASHINGTON, D.C. — The Tennessee Valley Authority (TVA) on June 14 filed a response brief in the U.S. Supreme Court contending that a petition for a writ of certiorari sought by environmental groups regarding the proper interpretation of the Clean Water Act (CWA) as it relates to navigable waters should be held pending the Supreme Court’s decision in a similar case (Tennessee Clean Water Network, et al. v. Tennessee Valley Authority, No. 18-1307, U.S. Sup.)....