S&P Global Ratings assigned its 'AAA' rating to Huntsville, Ala.'s series 2021-A water revenue warrants and series 2021-B taxable water revenue warrants, and affirmed its 'AAA' rating on the system's existing warrants. The outlook is stable. The city's senior-lien net water system revenue pledge secures the bonds, which are on parity with its series 2019, 2016, and 2015 warrants. The city's subordinate-lien net revenue pledge secures the series 2013 and 2021 state revolving fund (SRF) loans. Officials intend to use series 2021-A warrant proceeds to refund the series 2019 warrants, and use series 2021-B warrant proceeds to refund a portion of the series 2015 warrants for interest cost savings. Due to the system's limited exposure to federal revenue, we believe