We flood every few years. Yes I think it is time for Davenport Iowa to build a flood wall. Any business or homeowner that chooses to reside in a flood plain is on their own. Build a flood wall. Those should be guarded by a sea wall.
Standard precautions apply.
That means always thoroughly washing your hands with soap after handling sandbags or any sand or soil. There is no charge in Rock Island County. You need to go to the health department and pick up a bottle and instructions. In Scott County, a tester will visit you to take a sample, and there is a fee. See the Scott County website for details.