SAN FRANCISCO (Standard&Poor's) June 27, 2014--Standard&Poor's Ratings Services assigned its 'AA+' long-term rating to King County, Wash.'s $75 million series 2014A and $105.5 million series 2014B sewer revenue bonds, which are considered "parity bonds," or senior obligations of the county's sewer system. The outlook is stable. "The rating reflects our view of such factors as the county's consistent financial performance, role as the sole regional provider of wastewater treatment services, maintenance of very strong cash reserves, and broad and diverse economic base," said Standard&Poor's credit analyst Paul Dyson. The series 2014A proceeds will be used to refund a portion of the county's series 2007 sewer revenue bonds, while the series 2014B bond proceeds will