Moody’s Investors Service has given Fulton County a Aa3 bond rating for its $219.8 million water and sewerage revenue refunding bonds. Fulton is refinancing debt from water and sewer projects, and Aa3 is Moody’s fourth-best credit rating.

Moody’s also affirmed its Aa3 rating on $492.8 million of outstanding debt related to the water and sewer enterprise system. Bond proceeds will refinance debt from 2004 with an expected savings of 17.3 percent, with no extension of the maturity date.