SAN FRANCISCO (Standard&Poor's) April 30, 2007-- Standard&Poor's Ratings Services raised its rating and underlying rating (SPUR) on East Bay Municipal Utility District (EBMUD), Calif.'s existing subordinated water revenue bonds to 'AA+' from 'AA' and assigned its 'AA+' rating to the district's $890 million series 2007A subordinated water revenue bonds. In addition, Standard&Poor's raised its rating and SPUR on the district's existing subordinated wastewater revenue bonds to 'AA+' from 'AA' and assigned its 'AA+' rating to the district's $90.6 million series 2007A and B subordinated wastewater revenue bonds. The outlook is stable. "The rating and rating actions demonstrate the influence of management on credit quality," said Standard&Poor's credit analyst Gabe Petek. "The district