A Stormwater assessment is charged for every Equivalent Residential Unit, or ERU. The assessment is used to pay for stormwater improvements around Deltona to prevent flooding. The City Commission sets the assessment rate each year, and holds hearings that are open to the public before voting on the rate. Stormwater services are meant to benefit everyone and taxpayers may not opt out of these services. If you have questions about the number of ERUs on your tax bill, you may contact Deltona Public Works.