"Why are you so down at an attempt of structural improvement of City Government?"

What structural improvement? The bank that had backed the bonds had its credit rating downgraded so the city got out of that bank. Saving money is a good thing but it's not like the city made any major change to its own operations. As others have noted, the savings accrue to the DWSD. For the average city resident, this is going to have little impact on them, if DWSD even passes along the savings.