AUSTIN, Texas--(BUSINESS WIRE)--Fitch Ratings assigns a 'CC' rating to the following Puerto Rico Aqueduct and Sewer Authority, Puerto Rico (PRASA) bonds: --Approximately $750 million revenue bonds, series 2015A (senior lien). The 2015A bonds are placed on Rating Watch Negative. In addition, the $3.3 billion of outstanding PRASA parity senior lien revenue bonds currently rated 'CC' are maintained on Negative Watch. The 2015A bonds are scheduled to sell via negotiation the week of Aug. 17. Bond p