S&P Global Ratings assigned its AAA' rating and stable outlook to Tarrant Regional Water District, Texas' (TRWD) series 2017 water revenue refunding bonds. At the same time we affirmed our 'AAA' long-term rating on the district's outstanding long-term revenue bonds; we also separately maintain a 'AAA' rating and stable outlook on debt issued by TRWD but backed solely by the city of Dallas that is not being incorporated into this analysis. We are also affirming the 'A-1+' rating on the district's series A commercial paper (CP) program. Because it is an extendible maturity CP program with no revolving credit agreement or other liquidity support, the ratings are based on the long-term debt rating of 'AAA' on TRWD. The outlook on