Controversies involving construction or application of interstate compacts and pollution of waters

The United States district courts shall have original jurisdiction (concurrent with that of the Supreme Court of the United States, and concurrent with that of any other court of the United States or of any State of the United States in matters in which the Supreme Court, or any other court, has original jurisdiction) of any case or controversy— The district courts shall have original jurisdiction of a case or controversy such as is referred to in subsection (a) of this section, without any requirement, limitation, or regard as to the sum or value of the matter in controversy, or of the place of residence or situs or citizenship, or of the nature, character, or legal status, of any of the proper parties plaintiff or defendant in said case or controversy other than the signatory State or States plaintiff or plaintiffs referred to in paragraph (3) of subsection (a) of this section: Provided, That nothing in this section shall be construed as authorizing a State to sue its own citizens in said courts. The original jurisdiction conferred upon the district courts by this section shall include, but not be limited to, suits between States signatory to such interstate compact: Provided, That nothing in this section shall be construed as authorizing a State to sue another State which is not a signatory to such compact in said courts. The venue of such case or controversy shall be as prescribed by law: Provided, That in addition thereto, such case or controversy may be brought in in any judicial district in which the acts of pollution complained of, or any portion thereof, occur, regardless of the place or places of residence, or situs, of any of the parties plaintiff or defendant.