Yup, water bills. Lot more than in NZ... currently we pay US $299 per quarter, and that's "cheaper" because we're not inside the city limits where there's also a sewage fee.
The thing that mostly makes me shake my head over housing is that the pile of wood, concrete, wires and pipes needed to build these houses amounts to a tiny fraction of what they are supposedly "worth." So we're basically paying for "air," and evidently willingly so.