In 2009, the Iowa DNR implemented the time of transfer inspection law that requires all buildings served (or required to be served) by a private sewage disposal system to undergo an inspection of the system before it can be transferred. This inspection must be performed by a licensed time of transfer inspector. If the building has a septic system that illegally discharges to a ditch, farm tile, creek or any other surface discharge or is otherwise failing to properly treat the wastewater, the system must be replaced. This can be done by the seller prior to transferring the building or the buyer can agree to take on that responsibility. If the buyer agrees to replace the system, they will need to sign an agreement with the EH Specialist stating that they agree to replace the system by a certain date. If the system is found to be working properly, the system does not need to be brought up to current code standards although the EH Specialist or time of transfer inspector may make recommendations to prolong the life of the system or make maintaining the system easier.