IAC Rule 661.202.2:
Foster Care: Facilities in which foster care is provided to fewer than six children shall install a carbon monoxide detector on each floor of the residence.

SF 2219:
Requires amendments to the Iowa Code Section 100.18 for the installation of carbon monoxide alarms in existing single-family rental units and multiple-unit residential buildings that have a fuel-fired heater or appliance, a fireplace, or an attached garage.