Standard&Poor's Ratings Services assigned its 'AA' standard long-term rating, and stable outlook, to Sacramento County Sanitation District Financing Authority, Calif.'s series 2007A and 2007B refunding revenue bonds, issued for Sacramento Regional County Sanitation District, and affirmed its 'AA' Standard&Poor's underlying rating (SPUR), with a stable outlook, on the authority's preexisting senior revenue debt and its 'AA-' standard long-term rating, with a stable outlook, on the authority's preexisting subordinate debt, all issued for the district. The 'AA' rating reflects the district's: Diverse and growing economic base, which includes the state capital; Competitive rates relative to comparable West Coast systems; Strong debt service coverage (DSC) and liquidity; and Conservative fiscal policies and practices. Tempering the district's ratings are