CHICAGO (Standard&Poor's) May 28, 2013--Standard&Poor's Ratings Services affirmed its 'AAA' long-term rating on the Iowa Finance Authority's (IFA) revolving fund bonds for the IFA's drinking water and clean water program. At the same time, we assigned our 'AAA' rating to the authority's state revolving fund (SRF) revenue bonds, series 2013. The outlook on all ratings is stable. "In our view, the authority has an extremely strong enterprise risk profile, given that the program has ongoing support from multiple levels of government and a governmental entity manages the program, which we consider a credit strength," said Standard&Poor's credit analyst Corey Friedman. Also supporting the rating is our assessment of the IFA's: Extremely strong financial risk