Standard&Poor's Ratings Services assigned its 'AAA' long-term rating to the East Bay Municipal Utility District (EBMUD), Calif.'s series 2014A wastewater system revenue refunding bonds and 2014B (federally taxable) wastewater system revenue refunding bonds. At the same time, Standard&Poor's affirmed its 'AAA' long-term and underlying rating (SPUR) on the district's outstanding wastewater system revenue bonds. Standard&Poor's also affirmed its 'A-1+' short-term rating on the district's extendable commercial paper (ECP) notes (wastewater series). The outlook, where applicable, is stable. The ratings reflect our view of the wastewater system's: Mature customer base, which is located in the large and diverse San Francisco Bay Area regional economy; History of annual rate increases, which have led to stable financial