SAN FRANCISCO (Standard&Poor's) March 19, 2012--Standard&Poor's Ratings Services assigned its 'AA+' long-term rating to King County, Wash.'s $146.85 million sewer revenue and refunding bonds (parity bonds, senior lien), series 2012. The outlook is stable. "The rating reflects our view of such factors as the county sewer system's role as the sole regional provider of wastewater treatment services, the county's consistent financial performance, its maintenance of very strong designated cash reserves, and its robust economic base with strong underlying credit fundamentals," said Standard&Poor's credit analyst Paul Dyson. The parity bonds are being issued by King County's sewer system, and we understand that the proceeds will fund county wastewater treatment division system improvements and refund various