Standard&Poor's Ratings Services has assigned its 'AAA' long-term rating to Colorado Water Resource and Power Development Authority's series 2012A drinking water revenue bonds and affirmed its 'AAA' long-term rating on the authority's previously issued clean and drinking water senior-lien bonds, and clean and drinking water subordinate-lien bonds. Despite the subordinate-lien bonds not having any pledged debt service reserves, monies released from these reserves into the surplus matching account are pledged to the subordinate bonds. Releases occur annually, and, after paying subordinate debt service, remaining funds are held by the authority to make additional direct loans. The 'AAA' ratings reflect the following characteristics: An extremely strong enterprise risk profile, given that the pool has ongoing support from multiple levels