S&P Global Ratings assigned its 'AA-' rating and stable outlook to Trinity River Authority (TRA), Texas' series 2016 revenue refunding and improvement bonds, issued for the Red Oak Creek system, a regional wastewater treatment system, and affirmed its 'AA-' rating, with a stable outlook, on the authority's Red Oak Creek system's parity debt. The rating reflects our opinion of the credit strengths of the member cities' respective utility systems and financial stability, as well as, what we consider, the members' sound service area economies and utility system operations. We believe these cities' water and sewer systems collectively exhibit: Essentiality of wastewater treatment services provided by TRA; Sound financial profiles, including healthy debt service coverage (DSC) and cash position; Access to