Standard&Poor's Ratings Services assigned its 'AA' standard long-term rating, and stable outlook, to Trinity River Authority, Texas' revenue improvement and refunding bonds, issued for Denton Creek regional wastewater treatment system, and affirmed its 'AA' standard long-term rating and Standard&Poor's underlying rating (SPUR), and stable outlook, on the authority's preexisting revenue debt based on the member cities' general creditworthiness and financial stability, as well as their strong service area economies and utility system operations. These cities' water and sewer systems collectively exhibit: Revenue streams that provide adequate debt service coverage (DSC), Low treatment rates, and Sufficient treatment capacity. A first-lien pledge on net revenues derived from contract participants' payments to the authority secures the bonds. Payments are