DuPage Water Commission to Reduce Water Rate to Municipalities

Just learned yesterday that the DuPage Water Commission will be reducing the water rate to the municipalities by .10 cents per thousand gallons, that is a big reduction.  How was the water commission able to have such a large surplus?  Did they learn nothing from past experience? Will the saving be passed on to the end user, the taxpayer?

You can find more on the history of the water commission here, here and here.