DALLAS (S&P Global Ratings) Oct. 31, 2016--S&P Global Ratings raised its rating on Shreveport, La.'s senior-lien water and sewer revenue bonds to 'A-' from 'BBB+'. We also assigned a 'A-' rating to the city's series 2016B water and sewer revenue bonds, and a 'BBB+' rating to the junior-lien taxable water and sewer revenue bonds. The outlook is stable. "The upgrade is based on a sustainable improvement in as well as the consistency of the utility's financial performance, even with the expectation of significant amounts of debt over time to address an environmental mandate," said S&P Global Ratings credit analyst Theodore Chapman. Proceeds of the series 2016B bonds will be used to provide funds for new projects, including the next phases