Standard&Poor's Ratings Services revised its rating on New York City Municipal Water Finance Authority's (NYCMWFA's) fiscal 2003 series F, subseries F-2 adjustable-rate water and sewer system revenue bonds to 'AAA/A-1' from 'AAA'. The outlook is stable. The new 'A-1' short-term component of the rating reflects a new enhancement for the bonds in the form of a letter of credit (LOC) from Citibank N.A. (A/A-1), substituting a prior enhancement in the form of a standby-bond purchase agreement from Bayerische Landesbank (which we do not rate). The substitution is due to take place Oct. 29, 2015. The 'AAA' long-term component of the rating is unchanged and will continue to reflect our view of NYCMWFA's credit characteristics. The LOC will provide