SAN FRANCISCO (S&P Global Ratings) May 16, 2016--S&P Global Ratings assigned its 'AA+' long-term rating to Seattle, Wash.'s series 2016 drainage and wastewater improvement and refunding revenue bonds. At the same time, S&P Global Ratings affirmed its 'AA+' issuer credit rating (ICR) on Seattle's existing drainage and wastewater system parity debt. The outlook on all ratings is stable. The rating reflects our view of the city's extremely strong enterprise risk profile and very strong financial risk profile," said S&P Global Ratings credit analyst Chloe Weil. "The rating further reflects our view of the city's demonstrated willingness and ability to increase drainage and wastewater rates as well as comprehensive asset management practices," Ms. Weil added. The series 2016 bonds are being