Iowa Code § 135C.43A

If a facility has been assessed a penalty, does not request a formal hearing pursuant to section 135C.41, subsection 2, paragraph “b”, or withdraws its request for a formal hearing within thirty days of the date that the penalty was assessed, and the penalty is paid within thirty days of the receipt of notice or service, the amount of the penalty shall be reduced by thirty-five percent. The citation which includes the civil penalty shall include a statement to this effect.