Standard&Poor's Ratings Services affirmed its 'AAA/A-1+' rating on Pittsburgh Water and Sewer Authority, Pa.'s water/sewer subordinates variable-rate demand bonds series 2008C-2 and first lien variable-rate demand bonds series 2008D-2 due to their respective bank facilities being extended to June 9, 2011, and Aug. 10, 2010. The long-term component of the rating is based on Assured Guaranty Municipal Corp. The short-term component of the rating is based on JPMorgan Chase Bank N.A. The negative outlook is based on the outlook of the insurance provider. USPF Criteria: Bank Liquidity Facilities, June 22, 2007