S&P Global Ratings assigned its 'AA' long-term ratings to the San Francisco Public Utilities Commission's (SFPUC): Approximately $217.4 million series 2021A wastewater revenue notes (green notes); Approximately $128.7 million series 2012B wastewater revenue notes (green notes); Approximately $266.0 million series 2021A wastewater revenue bonds (green bonds); and Approximately $39.0 million series 2021B wastewater revenue bonds. At the same time, we affirmed our: 'AA' rating on the SFPUC's existing wastewater revenue bonds; 'AA' rating on the SFPUC's series 2020 Water Infrastructure Finance and Innovation Act (WIFIA) loan agreement (Southeast Treatment Plant/Headworks Project); 'AA' rating on the series 2018 WIFIA loan replacement agreement (Biosolids Project); and 'A-1+' short-term rating on the SFPUC's commercial paper (CP) notes. The outlook, where applicable, is stable.