Standard&Poor's Ratings Services assigned its 'A+' standard long-term rating, and stable outlook, to Trinity River Authority, Texas' series 2007 revenue bonds, issued for the Ten Mile Creek project, and affirmed its 'A+' Standard&Poor's underlying rating (SPUR), with a stable outlook, on the authority' parity debt based on the credit strength of the water and sewer operations of the system's five participating members: Cedar Hill, Texas; DeSoto, Texas; Lancaster, Texas; Duncanville, Texas; and Ferris, Texas. These strengths include: Stable customer bases, Sound coverage of fixed charges and any revenue bond debt, Limited capital needs within each system, and Sharply declining debt service schedules for project-related bonds. The contract between the authority and the five participating members specifies