Standard&Poor's Ratings Services confirmed its 'AAA/A-1+' rating on New York City Municipal Water Finance Authority's fiscal 2008 series B, subseries B-4 water and sewer system variable-rate revenue bonds, due to the bank facility being extended to Aug. 19, 2018. The long-term component of the rating is based on the rating on the obligor, New York City Municipal Water Finance Authority. The short-term component of the rating is based on the rating on the liquidity facility provider, Royal Bank of Canada. The stable outlook is based on the outlook on the obligor. USPF Criteria: Bank Liquidity Facilities, June 22, 2007