Standard&Poor's Ratings Services affirmed its 'A-1+' short-term rating on San Antonio, Texas' series A water system commercial paper (CP) notes based on our view of the water system's strong general creditworthiness. The notes are payable from a pledge of net system revenues. An amended revolving credit agreement between the City of San Antonio, Bank of America N.A., State Street Bank and Trust Company, and U.S. Bank N.A., effective July 6, 2010, and extending through July 9, 2013, provides liquidity support. This amended revolving credit agreement increased the commitment of Bank of America from $100 million to $150 million. The remaining commitment amount is split evenly among the other two financial institutions, with each providing up to $100 million