AUSTIN, Texas--(BUSINESS WIRE)--Fitch Ratings has assigned its 'AA+/F1+' rating to the following bonds issued by the Metropolitan Water District of Southern California (Metropolitan): --Approximately $189 million special variable rate water revenue bonds, series 2015A-1 and series 2015A-2 (self-liquidity). Bond proceeds will refund outstanding fixed and variable rate bonds as self-liquidity variable rate bonds. Bonds are expected to price June 30, 2015. In addition, Fitch affirms the following