There is a problem with the city sewage pipes that pushes water back into houses, usually the basement. That’s what happened in my neighborhood. I used grant money from the neighborhood association to fix it but I know some rental properties didn’t do the repair installation, so the landlord relies on the tenant to deal with it. I also know multiple houses where the owners used their grant money to move away, they fixed their old house enough to sell but didn’t completely prevent the floods. This leaves many houses with mold, sewage leaks, and some become abandoned. It’s a tough situation, two homes on my block are empty now, the combination of flooding from the sewage pipes, increased crime, increased truck traffic makes it hard to attract new buyers when the old homeowners sell.